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1
Lucky, Tonk. "EFFECT OF COLOUR." International Journal of Research - GRANTHAALAYAH Composition of Colours, December,2014 (2017): 1–5. https://doi.org/10.5281/zenodo.888215.
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Colours can stimulate and excite people, increase their appetite, make them feel warm or make them feel tranquil. Red simply makes you excited according to those who study chromo dynamics. Coke’s website is red – it gives you a feel of a lazy, hot summer day – just when you feel the need to drink Coke.There’s more to colours in web design than just the emotional factor. People tend to gamble more under red light conditions than under blue light. Colours have impact on performance. Red lights make people act quicker and feel more powerful, which is not always beneficial, while blue makes people think more before acting. There is a reason STOP signs are red – you need to act right away and stop the vehicle you drive, otherwise you are in danger.
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K J, Sannapapamma, Sakeena Naikwadi, Deepa Bhairappanavar, Rajesh Patil, and Y. R. Aladakatti. "Effect of scouring and laundering on functional properties of natural colour cotton fabric." Environment Conservation Journal 23, no. 1&2 (2022): 143–53. http://dx.doi.org/10.36953/ecj.021787-2120.
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Natural color cotton is eco-supportive as they possess colour naturally in varied shades viz., brown, green, cream and other tints and shades of these colours. It has unique comfort and handle property which provides soothing to the wearer. A medium brown natural colour cotton fibre was spun into 20s count yarn on open end spinning and the pure colour cotton fabric was developed on handloom and subjected to scouring. The scoured natural colour cotton fabric undergone with multiple wash cycles and assessed for mechanical, functional properties, colour fastness to sunlight and washing properties. Results revealed that, the scoured natural color cotton fabrics at washing and sunlight was found to be increase in color strength and decrease in reflectance than the pure NCC fabric. After laundering at multiple washes, the scoured natural colour cotton fabric exposed to direct sunlight, it was found that the colour strength was significantly reduced and fabric became lighter, duller and yellower. However, the scoured natural colour cotton fabric subjected to washing and shade dried exhibited significantly greater K/S, which indicates the sample became darker, brighter and greener than the sample expose to direct sunlight. The natural colour cotton fabrics has better mechanical, functional and fastness properties can be suitable for production of diversified cotton products ranging from children garments to trendy outfits. Hence, the promotion of natural colour cotton fabrics is a sustainable approach for green environment.
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Nijboer, Tanja C. W., Titia Gebuis, Susan F. te Pas, and Maarten J. van der Smagt. "Interactions between colour and synaesthetic colour: An effect of simultaneous colour contrast on synaesthetic colours." Vision Research 51, no. 1 (2011): 43–47. http://dx.doi.org/10.1016/j.visres.2010.09.030.
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Dulaimy, Ahmed Jamil Sulaiman Al. "THE EFFECT OF COLOUR-CODING ON LEARNING ENGLISH SENTENCE STRUCTURE." American Journal Of Social Sciences And Humanity Research 4, no. 10 (2024): 133–42. http://dx.doi.org/10.37547/ajsshr/volume04issue10-09.
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Colour carries a psychologically relevant meaning, and the colours we see affect our psychological performance. Colour-coding impacts learners’ cognitive processing as material-oriented interventions in multimedia learning. For educational purposes, colours can be used to stimulate neural activity, allowing pupils to learn, memorize, and retain new information more efficiently. Especially for those who are visual learners, the brighter the colours are, the more they are able to capture the attention for particular types of information. (Elliot and Maier: 2012). Colour-Coding Strategy can help pupils make connections, gain knowledge and have a positive impact on attention inside the classroom. So it is not a kind of fun. Using such a strategy in teaching and learning grammar can be as simple as just asking your pupils to take out their booklets and colouring pens and markers. The current research focuses on determining the effectiveness of using colour-coding as a better tool for learning sentence structure at the primary level. In light of the aim, the research’s null hypothesis has been formulated to be tested. The design of one group has been adopted, pre and post-tests used. The sample includes (32) female pupils who are randomly selected from Qubat Al Sakhrah primary school in Mosul city.
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Syakila, A. R., M. N. Jamaludin, M. M. Quazi, M. H. Aiman, and A. Arslan. "Effect of Laser Parameters on Colour Marking of Ti6Al4V Titanium Alloy." Journal of Physics: Conference Series 2688, no. 1 (2024): 012009. http://dx.doi.org/10.1088/1742-6596/2688/1/012009.
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Abstract Colour laser marking is a contemporary method for adding colours onto metal surfaces, suitable for creating logos, barcodes, metal crafts, and jewelry. This study focused on colour laser marking on the biomedical alloy Ti6Al4V (TC4), examining how different colours manifest on its surface. Power settings ranged from 9 W to 18 W, while frequencies spanned 500 kHz to 2000 kHz. The research investigated how altering laser frequency and defocus distance influenced colour variation. Surface features were assessed using 3D optical microscopy, revealing texture and roughness traits. Results illustrated a spectrum of colours, shifting from the alloy’s original silver hue to shades like blue, gold, orange, shiny silver, violet, and several greys. Each colour displayed distinct surface texture and roughness parameters. The highest mean roughness of 2.504 μm occurred with grey, while silver had the lowest at 0.504 μm. Nevertheless, trends differed when measuring parameters like maximum peak-to-valley height and valley depth, emphasizing surface topography’s role in colour effects. This research advances the understanding of colour laser marking’s intricacies on TC4 alloy, providing insights into optimizing laser settings for specific colour outcomes and underlining the nuanced relationship between colour, texture, and surface characteristics.
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Ramos, Nuno M. M., Andrea R. Souza, Joana Maia, and Ricardo M. S. F. Almeida. "Colour degradation of façade coatings – the effect of nanopigments incorporation." E3S Web of Conferences 172 (2020): 24004. http://dx.doi.org/10.1051/e3sconf/202017224004.
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The increasing interest in the use of a wide range of colours in buildings, especially dark colours, may lead to the early degradation of the façades, compromising their aesthetic and thermal performance. On the other hand, the incorporation of nanopigments with high reflectance properties can contribute to reducing the absorption of solar radiation. The nanoparticles contribute to increasing the solar reflectance of coatings, decreasing the surface temperature and improving the coating performance. This work evaluates the natural degradation of the colour of finishing coat with nanopigments in ETICS. The colour parameters were evaluated in different ETICS specimens, considering the colour black and red with and without incorporated nanopigments, under natural ageing. The colour measurement was performed according to ISO 1164-4, using a portable spectrophotometer. The results confirmed that the use of nanopigments improved the colour durability, promoting the maintenance of the colours parameters. The total colour difference was lower than the perceptible by the human eyes, even as the lower variation on chroma and hue parameters of the colours with nanopigments. In summary, the incorporation of nanoparticles in finishing coat of ETICS can contribute to increasing their durability and improve their thermal performance without compromising the aesthetic characteristics.
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Olsson, Peter, Robin D. Johnsson, James J. Foster, John D. Kirwan, Olle Lind, and Almut Kelber. "Chicken colour discrimination depends on background colour." Journal of Experimental Biology 223, no. 24 (2020): jeb209429. http://dx.doi.org/10.1242/jeb.209429.
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ABSTRACTHow well can a bird discriminate between two red berries on a green background? The absolute threshold of colour discrimination is set by photoreceptor noise, but animals do not perform at this threshold; their performance can depend on additional factors. In humans and zebra finches, discrimination thresholds for colour stimuli depend on background colour, and thus the adaptive state of the visual system. We have tested how well chickens can discriminate shades of orange or green presented on orange or green backgrounds. Chickens discriminated slightly smaller colour differences between two stimuli presented on a similarly coloured background, compared with a background of very different colour. The slope of the psychometric function was steeper when stimulus and background colours were similar but shallower when they differed markedly, indicating that background colour affects the certainty with which the animals discriminate the colours. The effect we find for chickens is smaller than that shown for zebra finches. We modelled the response to stimuli using Bayesian and maximum likelihood estimation and implemented the psychometric function to estimate the effect size. We found that the result is independent of the psychophysical method used to evaluate the effect of experimental conditions on choice performance.
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Tonk, Lucky. "EFFECT OF COLOUR." International Journal of Research -GRANTHAALAYAH 2, no. 3SE (2014): 1–5. http://dx.doi.org/10.29121/granthaalayah.v2.i3se.2014.3554.
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Colours can stimulate and excite people, increase their appetite, make them feel warm or make them feel tranquil. Red simply makes you excited according to those who study chromo dynamics. Coke’s website is red – it gives you a feel of a lazy, hot summer day – just when you feel the need to drink Coke.There’s more to colours in web design than just the emotional factor. People tend to gamble more under red light conditions than under blue light. Colours have impact on performance. Red lights make people act quicker and feel more powerful, which is not always beneficial, while blue makes people think more before acting. There is a reason STOP signs are red – you need to act right away and stop the vehicle you drive, otherwise you are in danger.
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Kutas, Gábor, Katalin Gócza, Peter Bodrogi, and János Schanda. "Colour Size Effect." Conference on Colour in Graphics, Imaging, and Vision 2, no. 1 (2004): 70–73. http://dx.doi.org/10.2352/cgiv.2004.2.1.art00015.
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Dryukova, Anna, and Tatyana Komkova. "Effect of plastic elements thickness on colour transmission intensity with light behind." E3S Web of Conferences 389 (2023): 01011. http://dx.doi.org/10.1051/e3sconf/202338901011.
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This article looks into the possibility of transmitting different colours in 3D-printed lamps using different thicknesses of plastic. During this work, an experimental stand was created to review the quality, structure, colour and translucency of printed elements. The analysis of decorative properties of plastic depending on the environment and colour was carried out. The colour was determined and such characteristics of the coating as colour, saturation, purity were calculated.
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Cheung, H. F., Y. S. Lee, Chi Wai Kan, C. W. M. Yuen, and J. Yip. "Effect of Plasma-Induced Ozone Treatment on the Colour Yield of Textile Fabric." Applied Mechanics and Materials 378 (August 2013): 131–34. http://dx.doi.org/10.4028/www.scientific.net/amm.378.131.
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The aim of this study is to investigate the effect of plasma-induced ozone treatment on the colour yield of the textile fabric. In this study, a textile fabric with red colour was subjected to plasma-induced ozone treatment under different treatment conditions. Experimental results revealed that colour fading effect was achieved in the textile fabric but the degree of colour fading depends much on the treatment conditions. The colur fading effect was determined by the colour yield through instrumental measurement.
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Ai Hong, Chen, and Nurulain Muhamad. "Greater effect of contrast polarities on visual acuity measurements using chart with shorter wavelength background." Malaysian Journal of Fundamental and Applied Sciences 14, no. 4 (2019): 515–19. http://dx.doi.org/10.11113/mjfas.v14n4.1134.
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Our study aimed to explore the effect of positive and negative polarities on visual acuity measurements by utilizing black and white as a text against background with three distinct colours. Visual acuity was recorded as logarithm of minimum angle of resolution (LogMAR) using the detection of the gap in a four-position Landolt-C. The 2x3 (polarity x background color) two way repeated measures ANOVA showed a statistically significant interaction between polarity and colour background on visual resolution [F (2, 16) = 23.704, p < 0.001, η2 = 0.744]. Among the three primary background colour, shorter-wavelength (blue background) showed statistically significant findings between both positive and negative polarity [F (1, 9) = 39.875, p < 0.001, η2 = 0.818]. Visual acuity measurements improved with negative polarity but decreased with positive polarity with blue colour background. However, visual acuity was not statistically significantly different with the green (medium-wavelength) [F (1, 11) = 0.625, p = 0.446, η2 = 0.053] and the red (long-wavelength) backgrounds [F (1, 9) = 4.021, p = 0.856, η2 = 0.000]. In conclusion, black text against shorter-wavelength (blue) background apparently more difficult to be resolved by human eyes compared with white text. These findings suggest colour element might be an advantage for negative polarity colour combinations.
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Kuriki, I., and K. Uchikawa. "Effect of Ambient Illuminant on Surface Colour Constancy." Perception 26, no. 1_suppl (1997): 221. http://dx.doi.org/10.1068/v970066.
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Generally, we are completely enclosed in a real environment, which may act as an entire view-field or adapting field. But in most studies on colour constancy experiments have been made with spatially restricted stimuli. We built a room with gray (N5) walls inside to measure the effect of ambient illuminant on colour constancy. The room illuminant could change its colour from white (D65) to either blue, orange, green, or purple. The observer sat in this main room and adapted to the illuminant for 5 min before the start of the experiment. The observer was shown a smaller room, which had the same variable-colour illuminant, through an aperture (11 deg × 8 deg) in the left side wall. We set the illuminant for each room independently, but in asymmetric illuminant-colour conditions either was set to white. The observer viewed the central part of a colour CRT monitor, placed behind a small aperture (5 deg × 5 deg) in the front wall, and matched its colour appearance to four OSA colour chips in the smaller room. Under symmetric illuminant conditions, eg blue vs blue, the observers' settings showed a complete match with the physical chromaticities of the colour chips. In asymmetric illuminant conditions, eg white vs blue, matched colours showed systematic deviations from both physical chromaticities and colour constancy. This implies that taking the ambient illuminant as adapting field did not yield perfect colour constancy. We introduce a simple model based on incomplete adaptation to the ambient illuminant and a spatial-interaction mechanism, which accounts for our results.
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BAI, LINLIN, and JIU ZHOU. "Research on double-faced jacquard fabric with compound full-backed structure of three wefts." Industria Textila 72, no. 05 (2021): 491–502. http://dx.doi.org/10.35530/it.072.05.1725.
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Weft-backed structures with compound weft colours can express the mixed colour effect. However, this structure is not suitable for jacquard fabrics with a double-faced shading effect in the traditional single layer design mode. Taking twenty-thread sateen with a step number (S) of 7 as an example, this paper investigates a design method for compound full-backed structure with three shaded-weave databases (SWDs) by selecting the primary weaves (PWs), designing the compound full-backed technical points and establishing the compound structure database with three SWDs. With this design method, a double-faced shading effect in combination with non-backed and full-backed effects on different sides of the jacquard fabric at the same position is generated. The fabric colour card was produced with three SWDs and three sets of different coloured wefts, and their colour values were measured, followed by an analysis of the compound structures on the reverse side, lightness, colour purity and colour difference (DE*ab) of the specimens. The results showed that the three covering effects on the reverse side, partly covered, critical position and totally covered, could be adjusted by controlling the step number and the transition direction of PW-C. For the specimens on the edges of the fabric colour card, their lightness and colour purity values showed a uniform transition effect along with the shading process; their colour differences ranged from 1.23 to 3.69, both in the range of 2–5, and showed a trace or slight colour difference between two adjacent fabric specimens, indicating that the colour shading effect with the three SWDs is stable.
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Peng, Ningyue, Chengqi Xue, Haiyan Wang, Yafeng Niu, and Lei Wu. "Priming Effect of Colour on Aiding the Attentional Reorientation in Sequential Presentations of Temporal Data Visualization: Evidence From Eye-Tracking." Interacting with Computers 33, no. 2 (2021): 188–210. http://dx.doi.org/10.1093/iwc/iwab021.
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Abstract In the present study, we focus on the priming effect of colour on mitigating the attentional reorientation cost, which is led by re-constructing the frame of reference for attention shift and visual search in sequential presentations of temporal data visualization. The study involves two experiments using complementary recordings of behavioural performance and eye-tracking events. Two aspects of colour primes are highlighted: the prime validity and the colour perceptual accessibility. A task paradigm integrating the feature search and keeping-track task was adopted in our experiments. In Experiment 1 (with a group of 16 participants), we confirmed the colour priming effect by comparing the priming condition to the neutral baseline. Furthermore, global colours that are with high perceptual accessibility generated more evident priming effects than local colours. However, more interferences in misguiding the attention to task-irrelevant regions were found when the global primes were invalid. In Experiment 2 (with another group of 15 participants), we verify the finding in Experiment 1 that global colours produced more pronounced priming effects in alleviating the attentional reorientation cost by comparing two groups of real-world visualizations with either global or local colours as the prime. Large saccades were initiated much earlier, and the search efficiency got improved when provided with global colours. We conjecture that the facilitatory effect from global colours may stem from its benefit on the pre-attentive processing of the search field. The research findings provide evidence for utilizing colours as the primes in mitigating the attentional reorientation cost and accelerating visual search in sequential presentations.
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Nisa, Baiq Haerun, Nunik Cokrowati, and Andre Rachmat Scabra. "Effect of LED Light Color on Color Brightness, Growth, and Survival of Comet Fish (Carassius auratus)." Jurnal Perikanan dan Kelautan 27, no. 3 (2022): 286. http://dx.doi.org/10.31258/jpk.27.3.286-296.
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Comet fish (Carassius auratus) is a type of freshwater ornamental fish with a high selling value due to its unique body shape and bright colour. The purpose of this study was to evaluate the effect of different LED (Light Emitting Diode) light colours on colour brightness, growth, and survival of comet fish. This study applies an experimental approach with an experimental design in the form of a completely randomized design (CRD) and consists of 5 light treatments and 3 replications, namely A (room light), B (white LED), C (blue LED), D (green LED), and E (red LED). The results showed that LED light treatment had a significant effect on the colour quality and feed efficiency, but did not significantly affect the growth and survival of comet fish. The best colour quality was found in treatment E (red LED) with an increase in the TCF (Toca Color Finder) score of 6.22 and colour performance on the back by 80.80%, pectoral fin colour by 64.91%, and tail fin by 71 .18%. The best feed efficiency was obtained in treatment C (blue LED) with a feed efficiency value of 57.48%. The behavioural responses of comet fish did not make any difference between each LED treatment. The water quality of the comet fish rearing media has a temperature value ranging from 25.70 – 29.20 C. The pH value ranges from 7.29 to 8.50. Meanwhile, dissolved oxygen ranges from 8.00 – 12.20 mg/L
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Guest, Steve, and Darren Van Laar. "The Effect of Name Category and Discriminability on the Search Characteristics of Colour Sets." Perception 31, no. 4 (2002): 445–61. http://dx.doi.org/10.1068/p3134.
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Within (and between) cultures, people tend to agree on which parts of colour space are easiest to name and what the names for these regions are. Therefore it is likely that the manipulation of ease of naming (nameability) of colours should change performance in tasks where categorisation by colour name is important. More specifically, highly ‘nameable’ colour sets should lead to better performance than metrically equivalent but less categorically distinct sets, when the task requires categorisation. This hypothesis was investigated by testing observers on a name-based task, the naming and subsequent identification by name of colour sets with up to sixteen members. These sets were designed to be easy to name (nameable), maximally discriminable, or matched discriminable. The first were derived from previously generated data, the second by a standard algorithm to space colours widely in colour space, and the latter by closely matching their metric characteristics to those of an easy-to-name colour set. This final condition was metrically (but not categorically) equivalent to the nameable set. It was found that sets designed to be nameable did indeed lead to superior performance as measured by response times, confidence ratings, and response accuracy. Perceptual colour similarity, measured by a ΔE metric, did not predict errors. Nameability may thus be a valid, manipulable, aspect of sets of colours, and one which is not otherwise duplicated in the metric characteristics of such sets.
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Gegear, Robert J., and Terence M. Laverty. "Effect of a colour dimorphism on the flower constancy of honey bees and bumble bees." Canadian Journal of Zoology 82, no. 4 (2004): 587–93. http://dx.doi.org/10.1139/z04-029.
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We assessed the flower constancy of Italian honey bees (Apis mellifera ligustica Spinelli, 1808) and bumble bees (Bombus impatiens Cresson, 1863) by presenting individual foragers with a mixed array of equally rewarding yellow and blue flowers after they were trained to visit each colour in succession. All honey bees showed a high degree of flower constancy to one colour and rarely visited the alternate colour, whereas most bumble bees indiscriminately visited both colours. Foraging rates (flowers visited per minute) and flower handling times did not differ between honey bee and bumble bee foragers; however, bumble bees tended to fly farther between consecutive flower visits and make fewer moves to nearest neighbouring flowers than honey bees. When bees were forced to specialize on one of two previously rewarding flower colours by depleting one colour of reward, honey bees required almost twice as many flower visits to specialize on the rewarding flower colour as bumble bees. Together, these results suggest that the relationship between individual flower constancy and colour differences is not a general behavioural phenomenon in honey and bumble bees, perhaps because of differences in the ability of each group to effectively manage multiple colours at the same time and location.
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Hassan, A. K. "Effect of age on colour of dentition of Baghdad patients." Eastern Mediterranean Health Journal 6, no. 2-3 (2000): 511–13. http://dx.doi.org/10.26719/2000.6.2-3.511.
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The aim of this study was to assess the effect of age on tooth colour and to record the range of tooth colour in patients in Baghdad, Iraq. A total of 650 patients who were treated by fixed prosthesis were included in the study. In younger patients the commonest colours found in teeth were white-red and yellow. The proportion of patients with grey colour and red-grey increased with age. Since each tooth might possess different shades in its surface, the quadrant method of shade selection is recommended
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Kingdom, F. A. A., K. Hammamji, and S. Rangwala. "Cardinal colour contributions to the colour-shading effect." Journal of Vision 4, no. 8 (2004): 159. http://dx.doi.org/10.1167/4.8.159.
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Horváth, Zs H. "The effect of storage on the colour of paprika powders with added oleoresin." Acta Universitatis Sapientiae, Alimentaria 9, no. 1 (2016): 50–59. http://dx.doi.org/10.1515/ausal-2016-0005.
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Abstract The use of natural food colours is preferred to that of artificial dyestuffs for modern alimentary purposes. Paprika is a spice plant grown and consumed in considerable quantities worldwide and also used as a natural food colour, so the colouring power of powders is very important. The colour of paprika powder is highly relevant too because the consumer concludes its colouring power based on its colour. The colouring power of paprika powders is directly determined by the quality and quantity of the colouring agent of paprika. The paprika oleoresin, that is an oil soluble extract from the fruits of Capsicum Annum Linn or Capsicum Frutescens, is suitable to raise the colour agent content of paprika powders. We investigated how the colour and the characteristics of paprika powder samples with added oleoresin change in the course of storage. The colour agent content of 7 different quality powders was increased with 7-75% using oleoresin. The initial colour agent content of samples changed between 41 and 169 ASTA units. The powders were made from Chinese, Peruvian, and Hungarian paprika. Colour measurements were performed with a HunterLab MiniScan colour-measuring instrument. The CIELab colour system was used for colour characterization. The colour agent content and the colour coordinates of samples were measured throughout 9 months. The decrease of colour agent content varied between 22 and 51 percent, while the average reduction was 33 percent. The quantity of added oleoresin did not influence the colour agent content decrease significantly. The values of colour difference changed between 2 and 4.5 units. The initial paprika powder influenced the variation significantly, but the quantity of added oleoresin did not have a significant effect.
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Pires, Luis Paulo, Vanessa Fonseca Gonçalves, Giancarlo Ângelo Ferreira, Flávio Roque Bernardes Camelo, and Celine de Melo. "Fruit colour and edge effects poorly explains frugivorous bird-plant interactions in disturbed semideciduous forests." Acta Scientiarum. Biological Sciences 40, no. 1 (2018): 40041. http://dx.doi.org/10.4025/actascibiolsci.v40i1.40041.
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Fruit colour is considered an important feature mediating interactions between plants and frugivorous birds. Despite that, colour mediated interactions are context-dependent, and habitat disturbances may affect how frugivorous birds perceive fruit colours. This study assessed the influence of fruit colour and edge effect on the consumption of artificial fruits by frugivorous birds in three disturbed semideciduous forests in southeastern Brazil. In each of those areas, we performed a field experiment in which we placed artificial fruits of three different colours on plants and recorded their consumption by birds. Red-coloured fruits were ingested more often than yellow, but neither of them was consumed differently from dark-blue. Edge effect only affected consumption of yellow fruits. Our data neither support the hypothesis of preferential consumption of the highest contrasting colours nor of increased fruit consumption in the forest interior. These findings indicate that colour and edge effects, as well as the interaction between them, may not be strong predictors of fruit choice by birds in disturbed environments, especially because generalist species, which are less sensitive to the physical alterations in forests, are favoured in these areas.
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Napoli, Giuseppe, Chiara Zitelli, Domenico Corapi, and Andrea di Schino. "Titanium Alloys Anodic Oxidation: Effect of Experimental Parameters on Surface Colouring." Materials Science Forum 941 (December 2018): 730–34. http://dx.doi.org/10.4028/www.scientific.net/msf.941.730.
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The present study is focused on analysing the change of colours of anodized titanium and effects of applied electrolytic voltages on chromatics. The titanium specimens were anodized in 20 g/L citric acid and 20 g/L baking soda electrolyte by use of different voltages. The colours of anodized titanium were measured with a spectrophotometer and then evaluated in the CIELAB colour space. It is found that different volt produces different colours. Anodizing in the range of 15 V to 150 V produces respectively a wide spectrum of colour ranging from brown to fuchsia. It can be concluded that the colours of the anodized titanium are dependent upon the applied voltages.
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Westland, S., C. Graham, S. Addison, P. Sharrott, and B. Rigg. "Effect of sleeve colour and background colour on change in colour assessments+." Coloration Technology 117, no. 3 (2001): 123–26. http://dx.doi.org/10.1111/j.1478-4408.2001.tb00049.x.
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Xiao, Kaida, M. Ronnier Luo, and Changjun Li. "Colour size effect modelling." Color Research & Application 37, no. 1 (2010): 4–12. http://dx.doi.org/10.1002/col.20650.
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Shelen and Hartini Laswandi. "APPLICATION OF FRESH COLORS IN CHILDREN'S ROOM INTERIORS AND ITS EFFECT ON CHILD PSYCHOLOGY." International Journal of Application on Social Science and Humanities 1, no. 1 (2023): 207–12. http://dx.doi.org/10.24912/ijassh.v1i1.25785.
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The bedroom is a place to rest and a place to shape the character of children's growth and development. Children's bedrooms should be designed using colours that have characteristics according to the child's personality so that children feel comfortable resting. Colour has an influence on human life. The choice of colour can determine the psychological, physiological and social impact. The choice of colour in a child's bedroom plays an important role in the psychology of the child. The purpose of this article is to explain how the application of fresh colours in the interior of a child's room can affect the child's psychology so that the child can feel a refreshing and energizing atmosphere. Research related to colour psychology has been done by many previous researchers, but the psychology of colour and its relationship to the application of fresh colours has not been studied. The design method used in this article is a qualitative descriptive method by observing people in the environment, interacting with them, and interpreting their opinions about the world around them. This design results in the physical and mental development of children in a good direction so that children can develop healthy, smart, and innovative. This article is intended for students and designers who are doing internships or who are having a children's room design project.
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Kaiser, Samiul, and Mohammad Salim Kaiser. "Temperature Effect on the Physical Properties of Enamel Paint Layer on Cement Plaster." Journal of Engineering Science 12, no. 2 (2021): 103–8. http://dx.doi.org/10.3329/jes.v12i2.54635.
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The heating effect on the stability and visual colour of enamel paint on cement plaster is evaluated through light intensity ratio of three primary colours (RGB). The painted cement plaster is isochronally heated in an electric resistance furnace at different temperatures for one hour. The investigation of optical images reveals that the original colour of the paint layer on the plaster samples remains more or less unchanged up to heating at 100°C. However, thermal degradation of the samples becomes evident in colour when they are heated beyond 200°C and at 350°C the colour becomes already burned. The microstructural images of the samples at room temperature show fine and uniform grains. But at higher heating condition the microstructure of the colour sample is characterized by coarsening grain. The colour of the heated samples are then studied through tristimulus colour ‘L*’, ‘a*’ ‘b*’ and ‘E*’ values which were analyzed and evaluated in MATLAB software. The results show that after 200°C the hunter ‘L*’ value starts to decrease greatly up to 250°C. The hunter ‘a*’ value shows an increasing trend up to 100°C and then begins to decrease until 200°C. After 200°C the same increasing character is showed till 300°C. The change of hunter ‘b*’ value remains insignificant up to 100°C and shows decreasing trend between 100°C-250°C range and an increase after 250°C up to 300°C. It is graphically shown that the proportion of all three colours decreases with the increasing temparature. The overall change of colour ‘E*’ occurs with increasing heating temperature due to moisture releasing, chemical changes and thermal degradation simulteneously. The thickness of enamel paint layer comply the above degradation by showing the nature of decresing trend.
 Journal of Engineering Science 12(2), 2021, 103-108
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Stjepić, Marta, and Sabina Bračko. "Colour Memory Analysis for Selected Associative Colours." TEKSTILEC 64, no. 3 (2021): 260–71. http://dx.doi.org/10.14502/tekstilec2021.64.260-271.
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Colours are one of the most important factors in everyday life. The exact number of existing colours is not yet fully known. Nevertheless, people are known for having poor colour memory. The ability to remember colours depends both on the characteristics of an individual and the situation in which the colour needs to be recalled. The field of colour memory (perception and memory of unusual colours) has been very poorly researched. The aim of this study was to analyse long-term colour memory for selected associative colours, comparing it with short-term colour memory. The research approach was based on observation, with observers observing for a period of time a particular colour, image, or a descriptively given reference colour. Colour was treated sepa¬rately from associations in the first part, and related to associations in the second and third parts. The first part contained all the reference colours shown independently of associations, the second part contained grayscale images of brands, and the third part comprised descriptively given colours. The result analysis showed that people remember colours very poorly. Observers generally performed better in testing short-term memory. Moreover, the way the template was presented had a noticeable effect on the long-term colour memory. When the image was given in grey, the results were better. The descriptive rendering of reference colours shown did not contribute to better results. The gender of observers did not significantly affect the results.
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Foster, David H., Sérgio M. C. Nascimento, and Kinjiro Amano. "Information Limits on Identification of Natural Surfaces by Apparent Colour." Perception 34, no. 8 (2005): 1003–8. http://dx.doi.org/10.1068/p5181.
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By adaptational and other mechanisms, the visual system can compensate for moderate changes in the colour of the illumination on a scene. Although the colours of most surfaces are perceived to be constant (‘colour constancy’), some are not. The effect of these residual colour changes on the ability of observers to identify surfaces by their apparent colour was determined theoretically from high-resolution hyperspectral images of natural scenes under different daylights with correlated colour temperatures 4300 K, 6 500 K, and 25000 K. Perceived differences between colours were estimated with an approximately uniform colour-distance measure. The information preserved under illuminant changes increased with the number of surfaces in the sample, but was limited to a relatively low asymptotic value, indicating the importance of physical factors in constraining identification by apparent colour.
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Kajang, Joshua Lane, Maurice Sunday Ezekiel, Array Vivian Ebock, Joy Samuel Akpan, and Amba Esija Njar. "Colour Preferences and Fabric Purchase Behaviour in Cross River State, Nigeria." African Journal of Management and Business Research 19, no. 1 (2025): 291–311. https://doi.org/10.62154/ajmbr.2025.019.01024.
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The study examined colour preference and consumer fabric purchase behaviour in Cross River State, Nigeria. The objectives of the study were to determine the effect of symbolic, aesthetic preferences and cultural implications on consumers’ fabric purchase behaviour with media effect as a moderating variable. The study population consisted of consumers between the ages of 20 and 50 years old. The sample size was 288 and a purposive sampling technique was used for the study. Multiple regression analysis was used to test the stated hypotheses. The study's findings revealed that colour aesthetics, the symbolic implications of colours, and cultural colour interpretation have a significant effect on consumers’ purchase behaviour of fabrics in Cross River State. The media as a moderating variable exerts a significant effect on consumers’ purchase behaviour of fabric colours across and among cultural blocks. The study recommended that marketing practitioners who are engaged in the distribution and sales of fabrics should carry out research from time to time to identify and understand colours that are in vogue among the target market in different seasons. There is a need for marketers to be alert to media trending across the globe as media has a significant effect on consumers' purchase behaviour of fabrics. An in-depth understanding of colour philosophy is essential for marketers to understand the symbolic meanings of colours among target markets and cultures.
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Atalar, Fatih, Kerim Uzun, Ahmet Gedikli, Aysel Ersoy Yilmaz, and Mukden Ugur. "A Study on the Effect of Light Sources on the Colour of Objects." Light & Engineering, no. 03-2020 (June 2020): 47–52. http://dx.doi.org/10.33383/2017-076.
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Lighting is one of the basic aspects that eases our lives and increases its quality. We use lighting tools in many places such as homes, streets, work places, hospitals, factories, etc. In this study, the effects of the light source and the surface of the object on features like colour temperature, glare, colour (perceived) and dominant wavelength is analysed. Four light sources such as a warm white halogen lamp, warm white LED source and two cool white LED sources were used. In the light measurements, 10 paper surfaces and 8 cloth surfaces were selected as the surface type. Colours of the surfaces were selected among the main colours on the colour locus. Light, reflected from surface was recorded with Konica Minolta CS-200 model. All results were indicated and compared with each other.
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Upadhyay, Divya, Tanu Jindal, Ashutosh Tripathi, K. D. Joshi, and Kartikeya Shukla. "Impact of Synthetic Food Colouring Agents on Aquatic Ecosystems and Human Health." UTTAR PRADESH JOURNAL OF ZOOLOGY 44, no. 13 (2023): 17–37. http://dx.doi.org/10.56557/upjoz/2023/v44i133542.
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Colour is an important factor to enhance the consumer acceptance and appetizing value towards food and beverages. Foods are coloured with both natural and artificial/ synthetic food dyes. Instead of natural food colours, synthetic food colours are now widely employed by the food industry because of its superior features (cheap cost, enhanced look, greater colour intensity, increased colour stability, and consistency). Life of synthetic colorants is quite long as they are highly soluble in water and oil. Based on their solubility, synthetic colorants are classified into fat soluble synthetic colours, lake colours, water soluble synthetic colours. Colouring agents have spread across the water and soil ecosystem, this is because they are mass-produced and wider application. Samples of water, suspended particles, sediment, and wild fish have all tested positive for food dyes. As a result, they are regarded as micropollutants in aquatic systems. Cancers, mutations, neurotoxic effects, decreased haemoglobin concentrations, allergic reactions, food hypersensitivity, abdominal pain, worsened asthmatic symptoms, vomiting, and diarrhoea are just some of the potential dangers to one's health, which can result from using synthetic colours that aren't allowed or using them in excess. This review critically evaluates the effect of synthetic food colouring agents on aquatic environment and human health. We found that there is a definite unfavourable effect of synthetic organic additives on aquatic life and human health. Some synthetic colouring dyes have toxicological qualities and pharmacological action, thus it's important to keep an eye on water bodies. Synthetic organic food colour in water ecosystems may constitute a harmful effect on animals or human health’s, it is urgent need to evaluate the hazard potential of these substances. For this reason, it is strongly suggested that both consumers and manufacturers of food colours should be aware about the rules and regulations regarding food colours.
 GRAPHIC ABSTRACT
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Xiao, Kaida, M. Ronnier Luo, Changjun Li, Guihua Cui, and Dusik Park. "Investigation of colour size effect for colour appearance assessment." Color Research & Application 36, no. 3 (2011): 201–9. http://dx.doi.org/10.1002/col.20610.
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Guay, Jean-Michel, Antonino Calà Lesina, Graham Killaire, et al. "Laser-written colours on silver: optical effect of alumina coating." Nanophotonics 8, no. 5 (2019): 807–22. http://dx.doi.org/10.1515/nanoph-2018-0202.
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AbstractIn this paper we discuss the optical response of laser-written plasmonic colours on silver coated via the atomic layer deposition of alumina. These colours are due to nanoparticles distributed on a flat surface and on a surface with periodic topographical features (i.e. ripples). The colours are observed to shift with increasing alumina film thickness. The colours produced by surfaces with ripples recover their original vibrancy and hue after the deposition of film of thickness ~60 nm, while colours arising from flat surfaces gradually fade and never recover. Analysis of the surfaces identifies periodic topographical features to be responsible for this behaviour. Finite-difference time-domain simulations unravel the role played by the alumina thickness in colour formation and confirm the rotations and recovery of colours for increasing alumina thickness. The coloured surfaces were evaluated for applications in colourimetric and radiometric sensing showing large sensitivities of up to 3.06/nm and 3.19 nm/nm, respectively. The colourimetric and radiometric sensitivities are observed to be colour dependent.
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Hodge, J. R., F. Santini, and P. C. Wainwright. "Colour dimorphism in labrid fishes as an adaptation to life on coral reefs." Proceedings of the Royal Society B: Biological Sciences 287, no. 1923 (2020): 20200167. http://dx.doi.org/10.1098/rspb.2020.0167.
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Conspicuous coloration displayed by animals that express sexual colour dimorphism is generally explained as an adaptation to sexual selection, yet the interactions and relative effects of selective forces influencing colour dimorphism are largely unknown. Qualitatively, colour dimorphism appears more pronounced in marine fishes that live on coral reefs where traits associated with strong sexual selection are purportedly more common. Using phylogenetic comparative analysis, we show that wrasses and parrotfishes exclusive to coral reefs are the most colour dimorphic, but surprisingly, the effect of habitat is not influenced by traits associated with strong sexual selection. Rather, habitat-specific selective forces, including clear water and structural refuge, promote the evolution of pronounced colour dimorphism that manifests colours less likely to be displayed in other habitats. Our results demonstrate that environmental context ultimately determines the evolution of conspicuous coloration in colour-dimorphic labrid fishes, despite other influential selective forces.
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Rohlík, B. A., P. Pipek, and J. Pánek. "The effect of natural antioxidants on the colour of dried/cooked sausages." Czech Journal of Food Sciences 28, No. 4 (2010): 249–57. http://dx.doi.org/10.17221/345/2009-cjfs.
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The colour changes caused by haem pigment oxidation were evaluated in the slices of dried sausages. To slow down these unwanted changes, several colourants and extracts from spices (rosemary, allspice, nutmeg, black pepper, clove, sandal wood, cochineal) were added to the meat product. The colour was evaluated using video image analysis (NIS Elements 2.0 software). The addition of antioxidants showed a positive effect on the colour stability and elimination of colour varieties in different parts of the dried sausage. These colour changes (decrease of redness a*) in cuts of dry sausages exposed to air and the light are influenced by the concentration of rosemary oleoresin, mostly by its light fraction. Video image analysis proved to be a suitable and simple method to monitor these colour changes of dried sausages.
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Oktaviani, Ina, Muhammad Junaidi, and Bagus Dwi Hari Setyono. "Variety of Tank Colours to Enhance the Colour Quality of Platyfish (Xyphophorus helleri)." Jurnal Biologi Tropis 20, no. 3 (2020): 340. http://dx.doi.org/10.29303/jbt.v20i3.1630.
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One of the factors that affect the colour quality of the platy fish (Xyphophorus helleri) during cultivation is the environment in bright light conditions, where setting bright light conditions can be done using a tank with a colour that can absorb light. Therefore, a study was conducted to examine the effect of tank colour on improving the colour quality of the platy fish and determining the correct tank colour. This research was conducted with an experimental method using a completely randomized design (CRD) consisting of five treatments repeated three times. The colour treatments of the tanks used were white, black, red, orange and yellow. The parameters observed were the increase in colour, growth in absolute weight and length and survival rate of platy fish. The results showed that the use of different tank colours had a significant effect (p <0.05%) on the improvement of colour quality and growth in absolute weight, and had no significant effect (p> 0.05) on absolute length growth and survival rate. The highest increase in colour quality was in white tanks with brightness values ranging from 13-15% and absolute weight growth ranging from 0.21 to 0.25 g. Therefore, in the cultivation of platy fish, a white tank should be used.
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Barnett, Kylie J., Joanne Feeney, Michael Gormley, and Fiona N. Newell. "An exploratory study of linguistic–colour associations across languages in multilingual synaesthetes." Quarterly Journal of Experimental Psychology 62, no. 7 (2009): 1343–55. http://dx.doi.org/10.1080/17470210802483461.
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In one of the most common forms of synaesthesia, linguistic–colour synaesthesia, colour is induced by stimuli such as numbers, letters, days of the week, and months of the year. It is not clear, however, whether linguistic–colour synaesthesia is determined more by higher level semantic information—that is, word meaning—or by lower level grapheme or phoneme structure. To explore this issue, we tested whether colour is consistently induced by grapheme or phoneme form or word meaning in bilingual and trilingual linguistic–colour synaesthetes. We reasoned that if the induced colour was related to word meaning, rather than to the acoustic or visual properties of the words, then the induced colours would remain consistent across languages. We found that colours were not consistently related to word meaning across languages. Instead, induced colours were more related to form properties of the word across languages, particularly visual structure. However, the type of inducing stimulus influenced specific colour associations. For example, colours to months of the year were more consistent across languages than were colours to numbers or days of the week. Furthermore, the effect of inducing stimuli was also associated with the age of acquisition of additional languages. Our findings are discussed with reference to a critical period in language acquisition on synaesthesia.
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Yassin, F. M., M. S. Latip, A. A. A. Ibrahim, et al. "Colours Effect Analysis on The Attention Level with A Single-Channel EEG." Journal of Physics: Conference Series 2314, no. 1 (2022): 012009. http://dx.doi.org/10.1088/1742-6596/2314/1/012009.
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Abstract Colours play an important role in many applications such as in education, communication, tourism, marketing, and architecture. From the previous research, especially related to education, colour could affect people’s focus or attention level. However, with further investigation, the colour could also be used for controlling or activating electronic devices. Therefore, the purpose of this study is to find out if turquoise, green, red, and a combination of red, orange, and yellow (picture of autumn) could trigger the attention level to be equal to or above the attention threshold. The required threshold that had been decided was 40. The attention level of five (5) respondents was recorded when they were looking at the colours for 8 seconds using a single-channel EEG of the Neurosky Mindwave headset. From the study, it is found that all colours could trigger the attention level of all respondents to be above the attention threshold of 40. However, the combination of red, orange, and yellow (autumn picture) showed the best result in triggering or maintaining the attention value within 40 to 100. The colour could be a potential input in controlling electronic devices that have an attention threshold of 40.
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De Winter, Stefanie, Pieter Moors, Hilde Van Gelder, and Johan Wagemans. "Illusory Depth Based on Interactions Between Fluorescent and Conventional Colours: A Case Study on Frank Stella’s Irregular Polygons Paintings." Art and Perception 6, no. 2-3 (2018): 116–50. http://dx.doi.org/10.1163/22134913-20181093.
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Although Frank Stella intended to create flat, illusion-less Irregular Polygons paintings, it is not uncommon to experience the illusion of colour depth, based on the interaction between their fluorescent and conventional colours. Some critics praised these artworks’ flatness, while others described odd depth experiences that they categorised as a new kind of illusion. In order to provide a correct reading of these works and to reassess their art historical significance, a scientific case study regarding this colour-depth effect imposes itself. This article discusses an experiment in which we determined whether twenty artists, twenty art historians and twenty laypeople experienced fluorescent colours as protruding, receding or flat in combination with conventional colours. We additionally looked at whether they still perceived colour depth when all fluorescent colours were replaced with their conventional variants. All participants observed fifteen designs, which they had to rate according to the perceived depth of each coloured region with a number between −3 (strongly receding) and +3 (strongly protruding). The results revealed that most participants experience fluorescent regions as strongly protruding, unlike all conventional colours, which were rated as much less protruding. When a fluorescent colour was swapped with a conventional variant, all participants experienced significantly less depth. The differences between the subject groups were statistically negligible when looking at the mean depth ratings for both colour types. However, we discovered that artists experienced more contrast effects, as they gave different ratings to different panels (of identical colour and shape) in the same design, depending on their position.
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Esikova, Alexandra D., and Alexander G. Fomin. "The Study of Subjective Evaluations of Colour Rendering of White Light Sources with Variable Chromaticity." Light & Engineering, no. 04-2022 (August 2022): 25–30. http://dx.doi.org/10.33383/2021-097.
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The effect of spectral composition of white light sources with variable chromaticity on objective and subjective evaluations of their colour rendering was studied. The dependences of the colour rendering indices on colour temperature were obtained for four light sources: a tungsten halogen lamp, white light emitting diodes with adjustable correlated colour temperature, fluorescent lamps of three colours, and three-colour light emitting diodes. The dependences of general colour rendering index (CRI) Ra and Smet’s memory colour rendering index (MCRI) Rm on the distance uv between a point corresponding to the studied radiation and the blackbody line in the 1960 CIE system (u, v) at constant correlated colour temperature 6500 K were also studied for an installation with three-colour light emitting diodes. The conditions, in which these indices reach their maximum values, were identified.
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Hasegawa, T., and R. Iiyama. "Difference in Perceived Colour between Painted Chips and CRT Images." Perception 26, no. 1_suppl (1997): 171. http://dx.doi.org/10.1068/v970339.
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The inducing effect of blue in colour assimilation on a CRT screen is so strong that pale blue apparently veils the stimulus pattern (Miyamoto and Hasegawa, 1996 Perception25 Supplement, 105). A similar tendency can be observed on painted paper, but this effect is not so marked. This led us to try colour matching between coloured papers and colours reproduced on a CRT screen. In both conditions the shapes (square) and the sizes (35 cm × 35 cm) were the same. They were displayed in the centre of a 155 cm × 155 cm gray (Munsell value 5, 22 cd cm−2) square with 10 cm wide white fringe (74 cd cm−2). The task was to adjust the colour on the CRT screen to match the coloured chip which was inside an illuminated box at a viewing distance of 180 cm in a dark room. Twenty-four colours were tested. Matched blues and other blue hues were slightly more saturated than object colours, but differences in chromaticity coordinates ( u‘ v’) were not statistically significant. This result is opposite to the prediction because it suggests a less bluish impression in the film-colour mode. By contrast, luminance in matched blues was lower than that of the object. This means that the brightness effect increased. An additional experiment in which the stimulus size was larger and the illuminating condition was changed to a light room produced the following results: (i) no meaningful difference in chromaticity coordinates could be seen; and (ii) the luminance of matched colours increased with size and in the lighter viewing condition. These facts show that the bluish colours on the CRT screen do not change their perceived chromaticity or spread spatially. The only difference was the subjective brightness increase in the condition when the room was dark. The strong effect of the blues in assimilation on the screen, therefore, does not depend on the colour identification process itself, but on the combined effect of luminosity and visual frequency response.
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Tolvaj, Laszlo, Gergely Papp, Denes Varga, and Elemer Lang. "Effect of steaming on the colour change of softwoods." BioResources 7, no. 3 (2012): 2799–808. http://dx.doi.org/10.15376/biores.7.3.2799-2808.
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The heat treatment of softwood (i.e. spruce, pine, fir, and larch) may result in significant colour changes. During this study Scots pine and spruce samples were steamed and analysed for their altered hue and lightness. Treatments included: 0 to 22 days of steaming time at a temperature range of 70 to 100°C. The outcome included a variety of colours between the initial hues and brownish tint. These new colours are similar to that of aged furniture and indoor wooden structures. Consequently, properly steamed softwood may be used to repair historical artefacts and relic furniture. Besides restoration, steamed stocks are excellent sources for manufacture of periodical furniture, where the aged appearance has aesthetical value. Results however, indicated that steaming at a temperature above 90 ˚C has a bleaching effect, i.e. the coloured chemical components formed by moderate steaming may be removed. Furthermore, we observed a linear correlation between lightness and colour hue at all steaming times and temperatures.
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Cheng, S. Y., C. W. M. Yuen, C. W. Kan, and K. K. L. Cheuk. "Effect of Hair Damage on Colour Uptake and Colour Fastness." Research Journal of Textile and Apparel 13, no. 1 (2009): 1–10. http://dx.doi.org/10.1108/rjta-13-01-2009-b001.
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Bogdan, Mariusz. "Evaluation of colour changes of the blade surface after exposure to high temperature." Journal of Konbin 54, no. 4 (2024): 69–84. https://doi.org/10.5604/01.3001.0054.9225.
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The article presents the results of research on the effect of temperature, including temperatures outside the nominal operating range, on the condition of the protective layer (coating) of aircraft engine gas turbine blades. The experiment focused on the effect of temperature, omitting the influence of the chemical effect of the working medium (exhaust gas). Certain relationships were demonstrated between the recorded surface colours of the blades and changes in the chemical composition, coating thickness and roughness of the surface layer. An analysis of surface colours was carried out in the L*a*b* colour space. It allowed determining the colour relations (quantitative assessment) between the recorded surfaces. In addition, the chromatic components a* and b* were associated with the change in coating thickness. The obtained results indicate the great potential of this space in diagnosing the technical condition of blades based on the analysis of their colour.
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Ghosh, Reeta. "FORECASTING OF COLOURS IN CREATIVE COMPOSITION OF TEXTILE FABRIC AND FASHION." International Journal of Research -GRANTHAALAYAH 2, no. 3SE (2014): 1–3. http://dx.doi.org/10.29121/granthaalayah.v2.i3se.2014.3520.
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Colour is the most enriched and endless form of human life. It reflects our mood and more importantly, it has more influence and effect on our lives than we realize. How can we define colour, a reality, a feeling that creates energy, enthusiasm, potential, anger, affection, passion andmany other feelings in us. If we are in pleasant feeling, colour fills us with the feel of joy and happiness and in contrary to this if we are unhappy and sad the colours are there, who fill with the feel of unhealthy, unhappiness and sadness. Now it is a matter to think upon that why we correlate our feelings with colour or how colour reflects our mood or our internal expressions in a physical manner. It is not only because of colour but of course because of its composition too. We always look for a new colour palette range or a new invention but have we ever thought that from where did colours come and why they show their impact on us and our lives. Craving for colour, forces human to create invent and generate inventions, of course a human with artistic or creative brain and heart, who not only evolve in engraving of colours but also put efforts in to it to foster.
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Halvorsen, A., and B. B. Jensen. "A new colour-change effect." Journal of Gemmology 25, no. 5 (1997): 325–30. http://dx.doi.org/10.15506/jog.1997.25.5.325.
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Yeghiazaryan, Armenuhi A., Vahagn S. Muradyan, and Arsen T. Grigoryan. "ASSESSMENT AND MAPPING OF THE DIVERSITY OF COLOR SHADES OF LANDSCAPES IN SUMMER SEASON USING SATELLITE IMAGES." Proceedings of the YSU C: Geological and Geographical Sciences 56, no. 2 (258) (2022): 93–101. http://dx.doi.org/10.46991/pysu:c/2022.56.2.093.
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The landscape, bearing certain pressure from the society, simultaneously has an aesthetic potential and actively affects the emotional and psychological comfort of a person. Among the many factors affecting the aesthetic qualities of the landscape (relief, vegetation, water, etc.), colour is also separated. The color diversity of the landscapes is impossible to appreciate with only using eyes. The article presents a unique methodology for separating colour shades, which are one of the important aesthetic factors of the landscape. For the first time, an attempt was made to distinguish the color tones that have a great influence on the aesthetic qualities of landscapes and to group them by analyzing the spectral curves of satellite images․ In contrast to the traditional field method, satellite images allow us to assess color tones over a short period of time and over a large area. Red, green and blue are considered the main physiological colours, and almost all true colours can be obtained by the combination of these three radiations. An attempt was made to separate the colors in the landscapes by analyzing spectral curves in green (543–578 nm), red (650–680 nm), blue (458–523 nm) spectral ranges of the Sentinel-2A, Sentinel 2B TCI (true color image) space images taken in the summer with a resolution of 10 m. In a professional software environment, 50 classes were obtained using "unsupervised" classification method, and for each class, the curves with the average values of spectral reflection of three visible colour ranges were obtained. By grouping the classes, a map of five colour groups (blue-green, green, red, gray and yellow, white) of the landscapes of Syunik Region was created for the summer season. Since the most important factor of colour harmony is the balance of colour shades, an attempt was made to determine the colour diversity of landscapes. Based on the obtained colour groups, in the summer season the colour diversity of the landscapes of Syunik Region was asssessed and mapped using Shannon's coefficient of heterogeneity. As a result, it was found that 52% of the landscapes of Syunik Region have green colouring in summer. The latter is considered a positive feature of the aesthetic appeal of landscapes and has a calming effect on a person. White colour has the smallest percentage share. 36% of the territory of the region has a high and very high diversity indicator, and 17.6% has a very low degree of diversity. In summer, the North-Eastern part of the region, the areas adjacent to the lower and middle streams of the Vorotan River, the Voghji and Meghri River basins are distinguished by colour diversity. However, from the point of view of aesthetic perception, the average degree of diversity is highly assessed, which is 27.2% in Syunik Region. The Southern part of Syunik has an average degree of diversity, especially the valley areas of the Araks River, the area of the Spandaryan reservoir.
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Baddeley, R., D. Osorio, and C. D. Jones. "Colour generalisation by domestic chicks." Behavioral and Brain Sciences 24, no. 4 (2001): 654. http://dx.doi.org/10.1017/s0140525x01210085.
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We present data on colour generalisation by chicks relevant to Tenenbaum and Griffiths' (T&G) Bayesian framework. Chicks were trained with either one or two colours, and tested for interpolation and extrapolation. T&G's framework predicts an observed lack of extrapolation on the red to yellow line in colour space. A modification incorporating stimulus uncertainty deals with a prototype effect, where an intermediate is preferred to exemplars. After training to complementary colours, chicks do not generalise across an intermediate grey as T&G predict. [Tenenbaum & Griffiths]
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Savvy, Jain, and Vaishnavi Nayak Avitesh. "Impact of Color on Human Behavior Case – Interior Space." International Journal of Emerging Research in Engineering, Science, and Management 2, no. 1 (2023): 33–37. https://doi.org/10.58482/ijeresm.v2i1.6.
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Colour is considered as the basic visual perception of any space. There are numerous developed theories and assumptions related to the aesthetic comfort offered by colours, and to their effect on human psyche. In this paper, it is inspected how the choice of colour changes with age and its impact on that age group of people. This investigation will focus all the factors those are predicted to be more influential in architecture, interior spaces and the psychological status of users. The research aim of this study is to increase the concern about the importance of the interaction between interior space and human behaviour responding to the colour of the interior space. Paper talks about the importance of colour in an interior space where the different user groups spend most of their time like- schools for kids, offices for adults and meditation centre, old age homes for senior citizens. This research would help others to understand the importance of colour in the interior space and how people of different age groups respond to it. Based on the analysis of the conducted surveys and interviews, conclusions are drawn about the effect colours have on human behaviour in an interior space.