Academic literature on the topic 'Colour coordinates'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Colour coordinates.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Colour coordinates"
1
ONUR CINKO, UGUR, and BEHCET BEHCET BECERIR. "Dependence of colour difference formulae on regular changes of colour coordinates in CIELAB colour space." Industria Textila 70, no. 03 (2019): 248–54. http://dx.doi.org/10.35530/it.070.03.1525.
Full textAbstract:
Four colour difference formulae [CIELAB (1976), CMC (2:1), CIE94 (2:1:1) and CIEDE2000 (2:1:1)] were assessed in CIELAB colour space for regular changes in colour coordinates. L*, a* and b* coordinates were changed regularly both as increasing and decreasing steps in different lightness and hue regions of the colour space. The dependence and consistency of the four formulae were researched depending on regular and constant colour coordinate changes. The aim of the empirical study was to determine if there could be a possibility of using different colour difference formulae in different hue regions of CIELAB colour space; in the region of bulk that each formula would give the best fitting and the most reliable results. The empirical study was carried out by using a special software which was prepared for the purpose. The results showed that CIELAB and CIE94 gave corresponding results with each other in the computing ranges. All the formulae showed different computing characteristics in the computation ranges. CMC formula gave the highest colour differences when computing near the grey point. It was concluded that CIEDE2000 formula suited itself the best according to the changes in computing steps. A more complicated software would be necessary to determine the sensitivity of the formulae by which the computing would be performed by changing all the coordinates (L*, a* and b*) at the same time.
2
Gómez-Polo, Cristina, Ana María Martín Casado, Norberto Quispe, Eva Rosel Gallardo, and Javier Montero. "Colour Changes of Acetal Resins (CAD-CAM) In Vivo." Applied Sciences 13, no. 1 (2022): 181. http://dx.doi.org/10.3390/app13010181.
Full textAbstract:
To quantify the discolouration of the temporary acetal resins in vivo, based on the weeks of follow-up and the salivary pH in the three thirds of the tooth. To find out if the final CIELAB coordinates can be predicted from the initial colour coordinates, the salivary pH, the situation (in thirds) and the weeks of follow-up. Colour coordinates (L, C, and h) were recorded by spectrophotometry in 13 participants fitted with hybrid provisional complete dentures made of acetal resin. Colour recordings were made on the day of placement and after several weeks of follow-up (6 to 31 weeks). Salivary pH was also measured as a predictor variable for colour change. The ANOVA statistical test and regression models have been used. The highest colour difference according to ∆Eab* was 27.46 units after 15 weeks of follow-up and the lowest was 7.34 units after 17 weeks of follow-up. Neither in the cervical nor in the middle third any regressor variable (initial L*, initial C*, initial h*, salivary pH and weeks of follow-up) was able to significantly predict any of the final colour coordinates (p > 0.05). The colour change of the temporary acetal resins used exceeds the threshold of clinical acceptability, and it is not acceptable to maintain satisfactory aesthetics. The weeks of follow-up and the salivary pH are not capable of satisfactorily predicting the final color coordinates of the acetal resins.
3
Wei, Xinyi, Stephanie Lam, Benjamin M. Bohrer, et al. "A Comparison of Fresh Pork Colour Measurements by Using Four Commercial Handheld Devices." Foods 10, no. 11 (2021): 2515. http://dx.doi.org/10.3390/foods10112515.
Full textAbstract:
The objective of this study was to evaluate the performance of different low-cost instruments to measure pork colour in comparison to Minolta spectrophotometers and industry subjective standards. Canadian pork colour standards and commercial meat (252 loin chops and 46 tenderloins) were measured using two Minolta (CM 700D) spectrophotometers, four Nix sensors (two Nix Pro II and two Nix QC), and four Spectro devices (two Spectro 1 and two Spectro 1 Pro). Using Bland-Altman plots, all hand-held devices revealed similar performance on colour coordinates, except for the Nix Pro II, which had more variability on a* value, and Spectro 1 Pro on b* value, when compared to Minolta measurements. Low RSD values (< 5%) were obtained from repeated measurements on Canadian colour standards. The trend of colour coordinates on colour scores (0–6) were similar for all four commercial instruments, except for a* from Nix Pro and b* from Spectro 1. The correlation coefficients between subjective standards and colour coordinates from the Nix and Spectro devices were slightly higher than the Minolta spectrophotometers. Even though Nix and Spectro 1 series instruments generated different absolute colour coordinate values on meat samples, these pocket-size instruments presented great reliability to measure pork surface colour. However, operational limitations of the instruments, such as the internal calibration time between samples for the Spectro 1 series, should also be considered.
4
Gómez Polo, Cristina, Yasmina Guadilla, María Portillo Muñoz, et al. "CIELab Colour Coordinate Changes Associated with the Resolution of Gingival Inflammation: Influence of Biotype and Severity." Journal of Clinical Medicine 14, no. 13 (2025): 4575. https://doi.org/10.3390/jcm14134575.
Full textAbstract:
Background/Objectives: The colour changes related to inflammation have yet to be quantified despite the fact that the intensification of gingival colour is one of the cardinal signs of gingival inflammation. We aimed to (1) assess the effect of periodontal treatment on gingival colour according to biotype and initial degree of inflammatory severity and (2) identify the relationship between the plaque index and gingival colour and compare the colour of moderately or severely inflamed gums to the colour of gums with mild inflammation. Methods: Forty-three participants with visual signs of inflammation were included in the study. CIELAB colour coordinates were measured using a spectrophotometer at the distal papilla, free gingival margin, middle zone of the attached gingiva, and mucogingival line proximate to the maxillary central incisor pre-treatment and four weeks post treatment with periodontal debridement. Each participant’s gingival biotype, plaque and gingival indices, age, and gender were also recorded. Results: The biotype and plaque index were both found to influence the colour of inflamed gums, albeit only the a* coordinate in two of the zones examined (the distal papilla and free gingival margin). Statistically significant differences were also found between the a* coordinates of participants with and without plaque at the distal papilla and the free gingival margin. The severity of inflammation also influenced the L* coordinates of gingival colour (p < 0.001) in all participants in all four zones examined. Periodontal treatment only affected the L* coordinate of gingival colour at the distal papilla and the free gingival margin. Conclusions: When gingival inflammation occurs, participants with thin biotype and plaque have redder gums, and moderately or severely inflamed gingiva have a visually perceptible darker colour. Periodontal treatment significantly increases the lightness of the distal papilla and the free gingival margin. Further, periodontal treatment creates a perceptible colour change in all zones under study, which is not dependent on either the patient’s biotype or initial severity of inflammation. Clinical Significance. Digital spectrophotometric analysis provides a valuable technological enhancement to quantify gingival colour and record changes in gingival colour during the course of periodontal treatment. Regardless of the initial severity of gingival inflammation, a perceptible increase in the L* coordinate (gums become visibly lighter) can be expected after periodontal treatment. Regardless of the initial severity of inflammation, a perceptible increase in the L* coordinate can be expected (gums become visibly lighter) after treatment.
5
Barreto, Anna, Jorge M. Martins, Nuno Ferreira, Isabel Brás, and Luisa H. Carvalho. "Valorisation of Forest Waste into Natural Textile Dyes—Case Study of Pine Cones." Forests 16, no. 5 (2025): 769. https://doi.org/10.3390/f16050769.
Full textAbstract:
The pine cone is an important forest product for the Portuguese economy. However, it is associated with environmental impacts, such as the generation of waste and the increased risk of forest fires. The objective of this research is to valorise waste from the production of Pinus pinaster Aiton in the form of natural dyes. The pine cone extracts were characterised in different alkaline solutions (1%, 5% and 10% NaOH) in order to evaluate the dyeing process on cotton knitwear, using the CIELab coordinates. The dyed samples were also subjected to light and water fastness tests. The extracts showed an increase in solids content with increasing alkalinity and a reduction in antioxidant content. The phenol content increased in the extract with 5% but decreased with the 10% concentration. All the dyes expressed a pink colour but with different shades. About the L* coordinate (luminosity), the colours became lighter as the NaOH increased. In the a* coordinate, all the samples had a reddish colour, and, in the b* coordinate, all the samples had a yellowish colour. About light and water fastness, all the samples lost colour, but in the water test, it was not noticeable.
6
H. Horváth, Zsuzsanna. "Analysis of change of the colour parameters of paprika powder with different added oleoresin." Analecta Technica Szegedinensia 7, no. 1-2 (2013): 16–21. http://dx.doi.org/10.14232/analecta.2013.1-2.16-21.
Full textAbstract:
The instrumental colour measurement isn’t used in course of the making and the qualification of the paprika powder, although the colour is the most important sense property of its. Paprika is also used as a natural food colour. The colour of paprika powder is very important too, because the consumer concludes its colouring power based on its colour. The colouring power is determined by quality and quantity of colouring agent of paprika squarely. The colour of the powder is influenced by its particle size, oil content and moisture content and first of all the colour agent content.We investigated how the colour agent content increasing influences the colour characteristics of paprika powders. The L*, a*, b* colour coordinates defined in the CIELab colour space were applied for the colour characterization. The measurements were carried out using a Minolta CR-300 tristimulus colour analyser.We loosed the colour agent from the paprika powder samples using acetone. The colour agent content of obtained samples was less than 10 ASTA units. After different quantity of oleoresin ( 0.0186 g, 0.0461 g, 0.0626 g, 0.0953 g, 0.3500 g, 0.6399 g) was added to samples of 10 g of powder. The colour characteristics and colour agent content of these samples were determined. The relation between colour agent content and colour coordinates was analysed using regression analysis and the colour differences ΔE*ab were determined between samples with different colour agent content.The results depicted that L* lightness coordinate decreased with increasing colour agent content, the points fitted on a reciprocal function with a significant correlation ( p=0.01). In the case of a* redness coordinate the points fitted on a saturation function (0.01), the redness coordinate didn’t change above 129 ASTA units. The b* yellowness coordinate increased to 97 ASTA units, then decreased, the points fitted on a second degree function with a significant correlation (p=0.01). The function has maximum at 97.17 ASTA units; the maximum value was 25.22 coordinate units. The value of hue angle (hoab) progressively decreased while the colour agent content was added. The C*ab chroma increased to 121 ASTA units, then decreased, the points fitted on a second degree function with a significant correlation (p=0.01). It depicts, that the colour of powder became more red and darker as the colour agent content increased. The colour differences ΔE*abcalculated between samples with different colour agent content were smaller above 130 ASTA units. It shows that the rate of the change of the paprika powders colour was smaller while the colour agent content increased.
7
Geelani, Syed Maqbool, Shoukat Ara, Pradeep Kumar Mishra, et al. "Eco-friendly dyeing of wool and pashmina fabric using Quercus robur L. (fruit cups) dye and Salix alba L. (wood extract) mordant." Journal of Applied and Natural Science 7, no. 1 (2015): 138–43. http://dx.doi.org/10.31018/jans.v7i1.577.
Full textAbstract:
Study was conducted to investigate the dyeing potential of Quercus robur L. (fruit cups) dye and Salix alba L. (wood extract) mordant on wool and pashmina fabrics. The experiment was conducted keeping in view the environmental safety by using unutilized plant materials and excluding the usage of chemical agents. The dyeing was carried out individually including and excluding mordant adopting different mordanting methods. The parameters like percent absorption, colour coordinates, colour strength (K/S), relative colour strength and colour fastness with regard to washing, light and rubbing were investigated. The results revealed higher percent absorption of mordanted samples than unmordanted samples. Colour coordinates (L*a*b*, Chroma, hue and ΔE) of dyed wool and pashmina fabric exhibited satisfactory results. The colour strength (K/S) and relative colour strength of pashmina fabric recorded higher than wool fabric. The fastness properties to washing, light and rubbing showed satisfactory grades including and excluding natural mordant. However, the grades of mordanted samples were found better than unmordanted samples. The dye and mordant in isolation and in combination showed beautiful colours and shades on selected fabrics with satisfactory retention properties, hence can be utilized commercially for coloration of wool and pashmina fabrics.
8
Rubiño, M., J. A. García, L. Jiménez del Barco, and J. Romero. "Colour Measurement of Human Teeth and Evaluation of a Colour Guide." Color Research & Application 19, no. 1 (1994): 19–22. http://dx.doi.org/10.1111/j.1520-6378.1994.tb00055.x.
Full textAbstract:
In the present work the colour coordinates have been obtained in the CIELAB system (L*,a*,b*) for the teeth of 600 individuals. to determine the region of the CIELAB space which contains all the different hues found in human teeth. In addition. one of the colour guides most used in dentistry has been studied to compare the hue range in this guide with the range possible in human teeth. The results show that colour coordinates of human teeth fall within an elliptical contour centered in a yellowish white. The colour guide studied did not cover all the possible values found for teeth chromaticities.
9
DZURENDA, LADISLAV. "The effect of UV radiation in Xenotest 450 on the colour of steamed beech wood during the process of simulated ageing." Annals of WULS, Forestry and Wood Technology 106 (January 15, 2019): 114–20. http://dx.doi.org/10.5604/01.3001.0013.7746.
Full textAbstract:
The effect of UV radiation in Xenotest 450 on the colour of steamed beech wood during the process of simulated ageing .The aim of the paper is to present the changes in colour of steamed beech wood in the pocess of simulated ageing in Xenotest 450. Red-brown colour of beech wood with the coordinates of L* = 62.6 ± 2.8; a* = 10.9 ± 2.3; b* = 17.1 ± 1.3 in the CIE L*a*b* colour space resulted from the mode of colour modification of wood with saturated vapour with the temperature of t = 120 ± 2 oC for τ = 6.5 hours. The surface of samples after drying to the moisture content of w = 12 % and planing was irradiated in Xenotest 450 with xenon gasdischarge tube by UV radiation with the wave length of 340 nm. Accelerated ageing experiment ran in exposure period A1 for seven days. Simulated ageing of thermally treated beech wood showed that due to UV radiation, the wood surface is turning pale and brown. The change in the lightness coordinate by the value of ΔL* = + 6.7 shows the rate of change in the surface lightness and the changes in the values of chromatic coordinates of red colour by the value of Δa* = - 0.1 and yellow colour by Δb* = + 12.3 shows the rate of getting brown. Therefore the hue angle increases from h*ab = 57.5 ° to h°ab = 69.8 °. The value of the total colour difference resulting from the process of ageing is ΔE* = 14.5.
10
Zhbanova, Vera L. "Evaluation And Selection Of Colour Spaces For Digital Systems." Volume 28, Number 6, 2020, no. 03-2020 (December 2020): 86–94. http://dx.doi.org/10.33383/2020-024.
Full textAbstract:
The research examined the changing of colour difference by the control colours depending on the choice of colour space when working with matrix photo detector. The spectral characteristics of photo detectors from different manufacturers noticeably differ from each other and from the addition the difference in colour quality between different digital devices. A software method for studying the colour rendition of the image obtained by digital devices based on the selection of an individual colour space for each matrix photo detector is proposed. To analyze and evaluate the capabilities of the spectral characteristics of matrix photo detectors, the control colour method based on the Mansell Atlas was used. The analysis of the obtained parameters of 14 colours was carried out according to various criteria for seven colour spaces: sRGB, AdobeRGB, DCI-P3 RGB, M1N1P1, PAL / SECAM, Wide Gamut RGB, ProPhoto RGB. Also studied the influence of the choice of colour space on the change in the coordinates of the source 6,500 K. Based on the colour differences of the control colours, it is possible to choose the optimal colour space for working with a specific matrix photo detector. The latter will reduce colour distortion at the initial stage of image registration. The ways for improving the colorimetric method of control colours are proposed as applied to digital devices at the software level.
Dissertations / Theses on the topic "Colour coordinates"
1
Oshima, Satoshi, Rika Mochizuki, Reiner Lenz, and Jinhui Chao. "Color-Weakness Compensation using Riemann Normal Coordinates." Linköpings universitet, Medie- och Informationsteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-86669.
Full textAbstract:
We introduce normal coordinates in Riemannspaces as a tool to construct color-weak compensation methods.We use them to compute color stimuli for a color weakobservers that result in the same color perception as theoriginal image presented to a color normal observer in the sensethat perceived color-differences are identical for both. Thecompensation is obtained through a color-difference-preservingmap, i.e. an isometry between the 3D color spaces of a colornormaland any given color-weak observer. This approach usesdiscrimination threshold data and is free from approximationerrors due to local linearization. The performance is evaluatedwith the help of semantic differential (SD) tests.<br>Swedish Foundation for Strategic Research through grant IIS11-0081.<br>European Community’s Seventh Framework Programme FP7/2007-2013 - Challenge 2 Cognitive Systems, Interaction, Robotics - under grant agreement No 247947 - GARNICS.
2
Gennetten, K. Douglas. "Color transformation modeling for printed images using interpolation based on barycentric coordinates /." Online version of thesis, 1989. http://hdl.handle.net/1850/11530.
Full text
3
Yang, Chuen-Chi 1968. "Effects of coordinate systems on color image processing." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/291570.
Full textAbstract:
Many coordinate systems exist for processing digital color images. The goal of this work was to investigate how the choice of color coordinate system affects the image processing results. Specific issues addressed include (1) quantization error in coordinate transformations, (2) efficient techniques for luminance processing, (3) color space gamut, and (4) color edge detection. The effect of the color coordinate system in each of these areas is explored. Efficient algorithms are presented, along with experimental results using standard color images.
4
Žuromskas, Povilas. "Įrenginio „XEROX DOCUCOLOR 5000“ ir „CONICA MINOLTA BIZHUB PRO 6500“ palyginamasis technologinių galimybių tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100701_092620-15571.
Full textAbstract:
Darbe ištirtos ir palygintos dviejų elektrofotografinių mašinų „Xerox DC5000“ ir „Conica Minolta 6500“ spalvų reprodukavimo galimybės. Tyrimas buvo atliekamas dviem spaudos mašinomis po tam tikro spaudų skaičiaus atspausdinant kalibracinį testą (lapą su specialiai spektrofotometrui paruoštais vienodo dydžio įvairių atspalvių kvadratėliais, kuriuose yra skirtingas visų keturių CMYK spalvų rastrinių taškų skaičius), kurio spalvų intensyvumas buvo matuojamas spektrofotometru „Efi ES–1000“. Nustatyta, kad spaudos mašinos „Xerox“ reprodukuojamų spalvų sodris didesnis lyginant su „Minolta“, tai lemia spaudo padengimas laku, kuris sukelia veidrodinį efektą, eliminuojama patenkanti į matavimo prietaisą išsklaidyta šviesa. Nustatytas savikalibracinės sistemos netobulumas bei abiejų mašinų spaudų skaičius, po kurio mašina turi buti kalibruojama. Darbą sudaro 7 dalys: įvadas, literatūros apžvalga, tyrimų metodika, rezultatai ir jų aptarimas, išvados ir rekomendacijos, literatūros sąrašas, priedai. Darbo apimtis – 57 p. teksto be priedų, 3 lentelės, 33 paveikslai, 15 bibliografinių šaltinių. Darbo priedai pridedami darbo pabaigoje.<br>The research regarding colour reproduction possibilities of two electrographic machines “Xerox DocuColor 5000” and “Conica Minolta Bizhub pro C6500” was made. In it two stamped machines were used, which had to stamp fixed numbers of calibration test (a paper with specially made, same size and various colours quadrants for spectrofotometer, where is different number of all four CMYK bitmap colour dots), which colour intensity was measured with using spaectrofotometer “Efi ES-1000”. The results have shown that “Xerox” machine has larger colour reproduction depth comparing to “Minolta” . This condition is made because of varnish that covers stamp. It creates specular effect and eliminates resolved light that comes to measuring devices. Self calibrating system cracks were discovered as well. Also two machines have to be calibrated after fixed number of stamps. Thesis has 7 parts: Introduction, literature review, research methodology, results, results discussion, conclusion and recommendation, literature list, appendix. Thesis consist of: 57p. text without appendix, 3 tables, 33 pictures, 15 bibliographical.
5
Hansen, Steven R. "Applications of Search Theory to Coordinated Searching by Unmanned Aerial Vehicles." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1809.pdf.
Full text
6
Peterson, Angela R. "Visual data mining Using parallel coordinate plots with K-means clustering and color to find correlations in a multidimensional dataset /." Instructions for remote access, 2009. http://www.kutztown.edu/library/services/remote_access.asp.
Full text
7
Neto, José de Ribamar Martins. "Filmes eletrocrômicos de WO3 nanoestruturado: síntese, caracterização e funcionalização." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-07122015-102145/.
Full textAbstract:
Este trabalho apresenta os resultados da síntese e caracterização de nanoestruturas de óxido de tungstênio (WO3) obtidos por via ultrassônica em meio não aquoso. Esta técnica tem como vantagens o uso de pouco material e o tempo empregado. A caracterização das nanoestruturas foi realizada por Microscopia Eletrônica de Transmissão (TEM), Microscopia Eletrônica de varredura (MEV), espectroscopia Raman e no infravermelho, termogravimetria e difração de raios-X. A imobilização das nanoestruturas foi realizada em substratos condutores transparentes (ITO) por automontagem camadas por camadas (LbL) e deposição eletroforética (EPD). Foram efetuadas caracterizações eletroquímicas e espectroeletroquímicas com medidas in situ usando UV-Vis. Os resultados eletrocrômicos demostraram a estrutura nanométrica dos filmes obtidos, com parâmetros eletrocrômicos como contraste óptico, tempo de resposta e eficiência eletrocrômica típicos de sistemas nanoestruturados. Alguns aspectos relacionados com o uso de um líquido iônico prótico (PIL) foram mostrados, conferindo melhora na durabilidade dos filmes em relação ao eletrólito H2SO4 1,0 mol L-1. Com o objetivo de modular e incrementar a coloração dos filmes de WO3, foi preparado um viológeno para imobilização superficial através de um grupo ancorador. Os filmes modificados foram investigados por espectroeletroquímica e coordenadas de cor. As coordenadas de cromaticidade foram obtidas por um colorímetro virtual baseado na convenção CIE 1931, dados de cromaticidade para as reações eletrocrômicas dos filmes de WO3 modificado são mostrados em espaços de cor.<br>The present work describes the synthesis and characterization of WO3 nanoplates in a non-aqueous solvent using ultrasonic irradiation process. This method presents some advantages such as the small amount of reactants and time consumed. WO3 nanoplates have been characterized by TEM and SEM microscopies, Raman and Infrared spectroscopies, thermogravimetric analysis and X-ray diffraction. The nanostructured nanoplates were immobilized by electrostatic layer by layer and Electrophoretic Deposition (EPD) processes onto ITO substrates. Spectroelectrochemical experiments were carried out showing electrochromic performance of the WO3 films such as optical density, response time and chromatic efficiency in a typical way for nanostructured films of WO3. The results using a protic ionic liquid (PIL) as electrolyte, instead of H2SO4, showed improvement in cyclic durability. Cyclic voltammograms were combined with transmittance measurements for all films that undergo typical reversible electrochromic reaction. In order to modulate and improve the colorimetric changes, viologen molecules were prepared with an anchoring group for modifying the surface by the chemisorption of a monolayer. WO3 films with viologen monolayer were investigated using Spectroelectrochemical and color coordinates analysis. A virtual colorimeter was applied for the accurate calculation of CIE 1931 xy color coordinates investigation during the electrochromic reaction of modified films.
8
Šperbelis, Gediminas. "Rašalinio spausdintuvo spalvų gamos tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050621_092021-21158.
Full textAbstract:
It was investigated the colour reproduction on prints made in ink-jet printer. Experimentally investigated gradation characteristics of CMYK colours. It was made a 26 step strip with raster dots from 0 to 100 %. Prints were made at different printing regimes on papers with different whiteness. Zone optical densities were measured, compared with theoretical density values and gradational distortions were determined. Also were measured 100% raster strips in CIE L*a*b* coordinate system and defined the maximum reproduction of colours in ink-jet printer.
9
Stålberg, Martin. "Reconstruction of trees from 3D point clouds." Thesis, Uppsala universitet, Avdelningen för systemteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-316833.
Full textAbstract:
The geometrical structure of a tree can consist of thousands, even millions, of branches, twigs and leaves in complex arrangements. The structure contains a lot of useful information and can be used for example to assess a tree's health or calculate parameters such as total wood volume or branch size distribution. Because of the complexity, capturing the structure of an entire tree used to be nearly impossible, but the increased availability and quality of particularly digital cameras and Light Detection and Ranging (LIDAR) instruments is making it increasingly possible. A set of digital images of a tree, or a point cloud of a tree from a LIDAR scan, contains a lot of data, but the information about the tree structure has to be extracted from this data through analysis. This work presents a method of reconstructing 3D models of trees from point clouds. The model is constructed from cylindrical segments which are added one by one. Bayesian inference is used to determine how to optimize the parameters of model segment candidates and whether or not to accept them as part of the model. A Hough transform for finding cylinders in point clouds is presented, and used as a heuristic to guide the proposals of model segment candidates. Previous related works have mainly focused on high density point clouds of sparse trees, whereas the objective of this work was to analyze low resolution point clouds of dense almond trees. The method is evaluated on artificial and real datasets and works rather well on high quality data, but performs poorly on low resolution data with gaps and occlusions.
10
Kan, Ming-Cheng, and 甘敏成. "Better Color Coordinates for Consistent Color Image Segmentation." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/68168919036144288730.
Full textAbstract:
碩士<br>國立中正大學<br>電機工程研究所<br>89<br>Color image segmentation is achieved through direct combination of the segmented image from color component images. Since many color coordinates are available, there must be one that is most suitable for image segmentation. This thesis proposed agreement, orthogonality and spectral similarity measure as criteria to decide which coordinate is the best. According to our simulation results, is always the best coordinate for color image segmentation no matter which measure is employed.
The organization of this thesis is as follows. Chapter 2 reviews the watershed algorithm used for image segmentation and some backgrounds about color coordinates. The criteria and procedures to decide which color coordinate is the best is shown in Chapter 3 and Chapter 4 is experimental results. Finally the conclusion and discussions are given in Chapter 5.
Books on the topic "Colour coordinates"
1
Kumagai, Kojiro. Fashion & color: Total fashion coordinate. Graphic-sha Pub. Co., 1985.
Find full text
2
Bartoli, Maria Teresa, and Monica Lusoli, eds. Le teorie, le tecniche, i repertori figurativi nella prospettiva d'architettura tra il '400 e il '700. Firenze University Press, 2015. http://dx.doi.org/10.36253/978-88-6655-884-2.
Full textAbstract:
La prospettiva dell’età moderna nacque come un ponte gettato tra l’arte e la scienza. Essa dava necessità all’arte e rendeva visibile la scienza; il terreno di coltura fu quello dell’architettura, che da sempre impegnava in sinergia i cultori dell’una e dell’altra. L’ambito di pensiero in cui fu concepita si occupava degli argomenti più alti, l’universo e la terra: a partire dagli astronomi-geografi e dai topografi, si è costruita nel tempo come disciplina e metodo scientifico-artistico, derivando sistematicamente teoremi da teoremi, in un crescendo di complessità, che ha assunto forme talvolta acrobatiche, non aperte all’evidenza. Le tecniche prospettiche sviluppate nel tempo hanno accompagnato le figure dell’architettura e del figurativo nei loro mutamenti. Le attuali tecnologie informatiche ci permettono oggi di studiare i modelli di questo ambito artistico con la fiducia di poter portare alla luce una storia nuova su di esso. Questo volume raccoglie i saggi di 44 ricercatori che, all’interno di un Progetto Nazionale bandito nel 2011, coordinato da Riccardo Migliari di Roma, hanno aderito alla chiamata del gruppo fiorentino, di cui è responsabile Maria Teresa Bartoli, per illustrare il loro metodo di approccio culturale e tecnico al tema attraverso un caso-studio: fosse esso rappresentato da un dipinto o dai passi di un trattato.
4
Kumagai, Kojiro. Fashion and Color: Total Fashion Color Coordinate. G K Hall & Co, 1986.
Find full text
5
(Contributor), James Welling, and Laurie Simmons (Photographer), eds. Laurie Simmons: Color Coordinated Interiors 1983. Skarstedt Fine Art, 2007.
Find full text
6
Dewey Color Coordinator: Create Sensible Stunning Color Combinations. Energia, Inc., 2001.
Find full text
7
The Cross Boxed Note Cards: 3 1/4 X 5 1/2, 10 Full Color Notes with Scripture, 10 Color Coordinated Envelopes, Color Coordinated Gift Box with Ace. C.R. Gibson Company, 2000.
Find full text
8
Karlsen, Kristine A. STABLE Learner Manual 5E - Spanish. American Academy of Pediatrics, 2005. http://dx.doi.org/10.1542/9781937967017.
Full textAbstract:
This Spanish version Learner Manual serves as a student handbook for either self-study of the S.T.A.B.L.E. CD-ROM or for instructor-led presentations. More than 220 pages of text, photos, and illustrations in full color. Coordinates well with CD-ROM and includes valuable appendices.
9
Golub, Mark. The Limits of Brown. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190683603.003.0004.
Full textAbstract:
Chapter 4 examines the rise of color-blind constitutionalism in the context of school desegregation and the Supreme Court’s post–Brown v. Board implementation cases. As typically understood, color-blindness supplies the initial and authentic desegregation vision, against which affirmative action’s reintroduction of racial consciousness appears as a betrayal or corruption of core democratic values. In contrast, this chapter situates color-blindness discourse within the coordinated efforts of white southern moderates to denounce the open racism of massive resistance while at the same time thwarting court-ordered integration of public schools. Paradoxically, color-blind constitutionalism gained prominence first as a technique for rendering segregation consistent with federal law.
10
McPherson, Michael. All Gay Men Are Color Coordinated: Memories of a Gay Man or How I Finally Grew Up. Independently Published, 2018.
Find full textBook chapters on the topic "Colour coordinates"
1
Hanbury, Allan, and Jean Serra. "Colour Image Analysis in 3D-Polar Coordinates." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-45243-0_17.
Full text
2
Jones, Huw. "Coordinates and Dimension: Representations of Space and Colour." In Computer Graphics through Key Mathematics. Springer London, 2001. http://dx.doi.org/10.1007/978-1-4471-0297-7_3.
Full text
3
Gooch, Jan W. "Color Coordinates." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2632.
Full text
4
Westland, Stephen. "CIE Chromaticity Coordinates (xyY)." In Encyclopedia of Color Science and Technology. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27851-8_1-1.
Full text
5
Westland, Stephen. "CIE Chromaticity Coordinates (xyY)." In Encyclopedia of Color Science and Technology. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-89862-5_1.
Full text
6
Westland, Stephen. "CIE Chromaticity Coordinates (xyY)." In Encyclopedia of Color Science and Technology. Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-642-27851-8_1-2.
Full text
7
Westland, Stephen. "CIE Chromaticity Coordinates (xyY)." In Encyclopedia of Color Science and Technology. Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4419-8071-7_1.
Full text
8
Andreadis, I. "A Color Coordinate Normalizer Chip." In Advances in Intelligent Systems. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4840-5_34.
Full text
9
Ohshima, Satoshi, Rika Mochizuki, Jinhui Chao, and Reiner Lenz. "Color Reproduction Using Riemann Normal Coordinates." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03265-3_15.
Full text
10
Liu, Shiwei, Junfeng Li, Quanhui Tian, and Ming Zhu. "High-Efficiency Image Color Gamut Mapping Based on Spherical Coordinates." In Advances in Graphic Communication, Printing and Packaging. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3663-8_43.
Full textConference papers on the topic "Colour coordinates"
1
Satheesan, Sreelakshmi, and Anilkumar T T. "Coordinated Control of PSS and SSSC Using Ant Colony Optimization." In 2024 International Conference on Advancements in Power, Communication and Intelligent Systems (APCI). IEEE, 2024. http://dx.doi.org/10.1109/apci61480.2024.10616952.
Full text
2
Noever, David, and Dennis Dunaway. "Visual Exploration of Complex Avionics' Time Series." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11485.
Full textAbstract:
A successful program of aircraft health maintenance should elevate complex bus parameters to be as visually persuasive as the condition indicators (green, yellow, red) and as statistically relevant as the corresponding vibration thresholds. This work examines UH-60M avionics and introduces five visualization methods appropriate for displaying large, multi-attribute datasets: 1) panel plots for multi-attribute data on a single time axis, 2) horizon plots to color-code important regions in a compact view, 3) box plots to isolate factors that may be obscured by simple trending; 4) correlation matrices to rigorously group common views; and 5) parallel coordinates to illustrate these multi-attribute dependencies over time. The research identifies horizon plots as particularly insightful to extend engine and flight analysis beyond the traditional strip chart.
3
Dedijer, Sandra, Magdolna Pál, Neda Milić Keresteš, et al. "PRELIMINARY STUDY ON POSSIBILITY TO USE AREA-BASED OPEN-SOURCE IMAGE ANALYSIS TOOLS IN ACCESSING SKIN TONE COLOR REPRODUCTION ACCURACY IN INK-JET PRINTING." In INTERNATIONAL SYMPOSIUM ON GRAPHIC ENGINEERING AND DESIGN. UNIVERSITY OF NOVI SAD FACULTY OF TECHNICAL SCIENCES DEPARTMENT OF GRAPHIC ENGINEERING AND DESIGN 21000 Novi Sad, Trg Dositeja Obradovića 6, 2024. http://dx.doi.org/10.24867/grid-2024-p16.
Full textAbstract:
Colour is a complex and integral aspect of human visual experience, significantly impacting our daily lives by influencing emotions, behaviours, decisions, and even physical well-being. Colour perception is highly subjective, varying widely among individuals due to factors such as biological differences, psychological influences, and contextual conditions. To ensure accurate colour monitoring, objective colorimetric analysis is essential, particularly in the graphic industry where colour reproduction quality is paramount. This necessity becomes even more pronounced in the reproduction of skin tones, a critical area of research due to its association with memory colours and its influence on the perceived impression of people in images. Recent research has demonstrated that individuals with normal trichromatic vision can accurately differ subtle changes in skin colour, including slight shifts in chroma and hue towards more reddish tones compared to the actual skin shade. Objective colour reproduction analysis typically employs standard colorimetric measurement procedures, devices, and software solutions. However, commercially available devices are often expensive and robust, particularly in the objective quantification of colour reproduction on materials with specific surface properties and shapes. There is growing interest in quantitative colour measurements derived from low-cost, user-friendly software solutions paired with inexpensive imaging technologies, making objective colorimetric detection more accessible. In this paper, we investigate the potential of using two area-based open-source image analysis tools, ImageJ and Trigit, to assess skin tone colour reproduction accuracy. Targeted skin colour tones were ink-jet printed, scanned, and analyzed to extract colour coordinates using these tools, with manual measurements taken directly from the prints using a spectrophotometer as well. By calculating colour differences, we characterized the proposed colour measurement procedures. The research reviled certain advantages as well as limitations of usage of area-based open-source image analysis tools in characterizing skin colour reproduction.
4
Urbin, Á., and B. V. Nagy. "CHROMATIC DISCRIMINATION THRESHOLDS OBSERVED IN CAM02-UCS AND CAM16-UCS." In CIE 2021 Conference. International Commission on Illumination, CIE, 2021. http://dx.doi.org/10.25039/x48.2021.op46.
Full textAbstract:
In our study chromatic discrimination thresholds of normal colour observers measured with the Trivector test of the Cambridge Colour Test were analysed. Chromaticity coordinates were transformed from the CIE (1976) u’v’ diagram to the CAM02-UCS and CAM16-UCS colour spaces, where colour differences were calculated. The measured data consisted of chromatic discrimination thresholds measured in 66 reference points covering the gamut of a CRT display. The test directions were set to the confusion axes towards the Protan, Deutan and Tritan confusion points. Our results show variance in the ΔE values expressed both in the CAM02-UCS and CAM16-UCS colour spaces. Since our input chromaticity values described previously measured just-noticeable stimuli – therefore perceptually equal colour differences – we assumed that our data show equal colour differences in the uniform colour spaces. However, the discrimination thresholds transformed to CAM02-UCS and CAM16-UCS show that colour differences increase towards the chromaticity of the adapting light.
5
Bouroussis, C., S. Florian, B. Peter, B. Nina, and S. Reto. "RECONSTRUCTION OF CAMERA SPECTRAL RESPONSIVITY USING MULTIPLE NARROW-BAND LED RADIANCE SOURCES." In CIE 2023 Conference. International Commission on Illumination, CIE, 2023. http://dx.doi.org/10.25039/x50.2023.op040.
Full textAbstract:
This paper presents methods for the characterization of monochrome or colour imaging sensors using multiple narrowband colour LED as radiance sources and optimization algorithms in order to estimate their spectral responsivity. This method can be used in cases where a monochromator setup is not available or a fast estimate is needed. In addition, XYZ coordinates for various radiance sources are estimated using the camera counts from the three colour channels (RGB). For this purpose, various linear and non-linear models of RGB values are tested. The RGB models are trained using different groups of reference sources under various sets of weighting factors per source and the corresponding coefficients are calculated via optimization algorithms. The models output and the optimization results were compared to ground truth and expected errors for each of the proposed methods were calculated. This research showed that there could be a good estimate of a camera's spectral responsivity using Legendre polynomials of around 6-8th order and given a multiple LED radiance source. In addition, the estimate of XYZ coordinates using RGB counts can be optimized for specific groups of sources with an expected error even below 1%.
6
Li, J., and Y. Ohno. "CHARACTERISING CIECAM02 PREDICTIONS OF PERCEIVED COLOURFULNESS AND HUE CHANGES AT DIFFERENT LIGHT LEVELS DUE TO HUNT EFFECT." In CIE 2023 Conference. International Commission on Illumination, CIE, 2023. http://dx.doi.org/10.25039/x50.2023.op064.
Full textAbstract:
The purpose of this study is to characterise the predictive performance of the CIECAM02 and CIECAM16 colour appearance models by comparing with experimental results on Hunt Effect over a wide range of illuminance levels. In our earlier experiments, red, green, yellow, blue colour matching data under higher illumination levels (6000 lx, 1000 lx, 100 lx) were collected. In this study, another experiment was conducted to collect colour matching data on Hunt Effect at lower illumination levels (300 lx, 100 lx, and 30 lx). The chromaticity coordinates of the matches and targets from both experiments were first calculated and plotted in CAM02UCS colour space. Then the CIECAM02 and CIECAM16 predictions of the colourfulness and hue angles for matches and targets were compared across different illumination levels (30 lx to 6000 lx). Slight differences (
7
Plazonić, Ivana, Irena Bates, Vesna Džimbeg-Malčić, and Davor Zember. "Colorimetric changes of waterbased flexographic ink printed on hemp-based papers exposed to artificial ageing." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p3.
Full textAbstract:
The objective of the research was to investigate colorimetric changes of the waterbased flexographic ink printed on hemp-based papers subjected to artificial ageing. Three types of commercially available hemp office papers were used as printing substrate and by Esiproof instrument were printed manually in full tone with process waterbased flexographic inks. Both, papers and prints were exposed to artificial ageing in the Suntest XLS+ test chamber according ASTM D 6789-2 standard. The L∗, a∗, b∗ colour coordinates were measured and ΔE00 colour difference was calculated for different stages of light exposure in order to determine the change from the original color value. In total exposure time was 96 h. The results have shown how the paper optical stability is dependent upon manufacturing process and that bleached hemp fibers provides better optical stability of papers than unbleached hemp fibers. Further, stability of prints made on hemp-based papers is for the most part defined by ink color, while the impact of the printing substrate is less pronounced. Generally, it was noticed how the most stable among prints were prints covered with the black ink, while prints with the yellow ink had the greatest changes in color under the influence of light.
8
Alpaslan Kösemen, Z., Ş. Yaran, H. Nişancı, A. Sperling, and Ç. Akkan. "UNCERTAINTY EVALUATION OF HORTICULTURAL LEDs AND MONTE CARLO SIMULATION APPROACH." In CIE 2023 Conference. International Commission on Illumination, CIE, 2023. http://dx.doi.org/10.25039/x50.2023.po118.
Full textAbstract:
In the fields of photometry and radiometry, spectral measurements play a crucial role in determining various parameters. The photometric parameters like total luminous flux, colour coordinates, etc. are attained by integrating spectral quantities. The integrated quantity uncertainty analyses can be complex for the calculation by GUM approach. Uncertainty analysis including the correlations effect can be done by Monte Carlo simulation. This study shows both approaches, i.e. with and without correlations, for the uncertainty analysis of the flux of a horticultural LED.
9
Cigula, Tomislav, Tomislav Hudika, Mihael Katana, Marina Golik Krizmanić, and Tamara Tomašegović. "The influence of PCL-ZnO coating composition on coated offset cardboard prints." In 10th International Symposium on Graphic Engineering and Design. University of Novi Sad, Faculty of technical sciences, Department of graphic engineering and design,, 2020. http://dx.doi.org/10.24867/grid-2020-p8.
Full textAbstract:
The most significant printing branch in these days is packaging printing. Packaging must primarily preserve the product from damaging, but at the same time must attract the consumers to be picked up from the shelf in the store. To ensure protective and aesthetic role of the packaging the prints are commonly coated with varnishes which will improve visual, mechanical, surface, and optical properties. In this paper a coating composed of polycaprolactone (PCL) and nanoscale ZnO was used to coat the offset prints on the cardboard. The coatings were prepared by adding various weight amounts of the ZnO nanoparticles (weight ratios of 0.1, 0.5 and 1%) into the mixture of PCL and ethyl-acetate. The coatings were applied onto prepared offset prints. The prints were evaluated before and after coating process by determining colour coordinates, print gloss, water vapour permeability and by calculating colour difference. The results showed that on the uncoated paper coating with prepared OVPs did not affect the colour reproduction outside acceptable tolerance levels, except for magenta coated with w(ZnO) = 0.5 and 1%. The coating with prepared coatings caused almost none change of print gloss on uncoated paper, but increased the print gloss on coated paper. The water-vapor permeability was lowered on both investigated paper types but on the uncoated paper the addition of ZnO nanoparticles decreased barrier properties in comparison to the coating composed of only PCL. Increasing the mass of added ZnO increases barrier properties of the print on both investigated cardboards. To conclude, this research has proved applicability of the PCL-ZnO coatings as a OVP on cardboard offset prints as it did not highly influenced colour reproduction but had decreased water vapour transmission rate. On the coated paper/cardboard one must take into account the increased colour difference of magenta and chose the ink to be closer to the target values at the beginning. In addition, to further investigate applicability in the packaging printing, further research should include investigation of resistance to ink fading in the ageing process, bending tests, adhesion etc.
10
Molada Tebar, Adolfo, José Luis Lerma, and Ángel Marqués-Mateu. "SOFTWARE DEVELOPMENT FOR COLOURIMETRIC AND SPECTRAL DATA PROCESSING: PYCOLOURIMETRY." In 1st Congress in Geomatics Engineering. Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/cigeo2017.2017.6568.
Full textAbstract:
Archaeological documentation is a complex process where the technical measurement and specification of colour is a key aspect. In the last years heritage documentation processes have largely benefited from the application of digital recording methods, imagery analysis software and technologies that offers great advantages over the traditional methods. The rigorous processing of colourimetric data requires software packages with specific colourimetric technical characteristics. In this paper we report on our in-house pyColourimetry software that was developed and tested taking into account the recommendations of the Commission Internationale de l'Éclairage (CIE). The objective is to apply a rigorous procedure for the characterisation of cameras based a priori on polynomial models. Most of the digital cameras capture colour information in the well-known RGB format, but the signals generated by the digital camera are device dependent. By means of the characterisation we establish the relationship between device dependent RGB values and the tristimulus coordinates defined by the CIE standard colourimetric observer. Once the camera is characterised, users have the potential to obtain output images in the sRGB space that is independent of the sensor of the camera. pyColourimetry software allows users to control the entire digital image processing and the colourimetric data workflow proposed. We applied the methodology on a set of pictures targeting Levantine rock art motifs in Cova dels Cavalls (Castellón, Spain) which is considered part of a UNESCO World Heritage Site. The outcomes obtained are satisfactory and very promising for proper colour documentation in cultural heritage estudies.http://dx.doi.org/10.4995/CIGeo2017.2017.6568
Reports on the topic "Colour coordinates"
1
Engel, Bernard, Yael Edan, James Simon, Hanoch Pasternak, and Shimon Edelman. Neural Networks for Quality Sorting of Agricultural Produce. United States Department of Agriculture, 1996. http://dx.doi.org/10.32747/1996.7613033.bard.
Full textAbstract:
The objectives of this project were to develop procedures and models, based on neural networks, for quality sorting of agricultural produce. Two research teams, one in Purdue University and the other in Israel, coordinated their research efforts on different aspects of each objective utilizing both melons and tomatoes as case studies. At Purdue: An expert system was developed to measure variances in human grading. Data were acquired from eight sensors: vision, two firmness sensors (destructive and nondestructive), chlorophyll from fluorescence, color sensor, electronic sniffer for odor detection, refractometer and a scale (mass). Data were analyzed and provided input for five classification models. Chlorophyll from fluorescence was found to give the best estimation for ripeness stage while the combination of machine vision and firmness from impact performed best for quality sorting. A new algorithm was developed to estimate and minimize training size for supervised classification. A new criteria was established to choose a training set such that a recurrent auto-associative memory neural network is stabilized. Moreover, this method provides for rapid and accurate updating of the classifier over growing seasons, production environments and cultivars. Different classification approaches (parametric and non-parametric) for grading were examined. Statistical methods were found to be as accurate as neural networks in grading. Classification models by voting did not enhance the classification significantly. A hybrid model that incorporated heuristic rules and either a numerical classifier or neural network was found to be superior in classification accuracy with half the required processing of solely the numerical classifier or neural network. In Israel: A multi-sensing approach utilizing non-destructive sensors was developed. Shape, color, stem identification, surface defects and bruises were measured using a color image processing system. Flavor parameters (sugar, acidity, volatiles) and ripeness were measured using a near-infrared system and an electronic sniffer. Mechanical properties were measured using three sensors: drop impact, resonance frequency and cyclic deformation. Classification algorithms for quality sorting of fruit based on multi-sensory data were developed and implemented. The algorithms included a dynamic artificial neural network, a back propagation neural network and multiple linear regression. Results indicated that classification based on multiple sensors may be applied in real-time sorting and can improve overall classification. Advanced image processing algorithms were developed for shape determination, bruise and stem identification and general color and color homogeneity. An unsupervised method was developed to extract necessary vision features. The primary advantage of the algorithms developed is their ability to learn to determine the visual quality of almost any fruit or vegetable with no need for specific modification and no a-priori knowledge. Moreover, since there is no assumption as to the type of blemish to be characterized, the algorithm is capable of distinguishing between stems and bruises. This enables sorting of fruit without knowing the fruits' orientation. A new algorithm for on-line clustering of data was developed. The algorithm's adaptability is designed to overcome some of the difficulties encountered when incrementally clustering sparse data and preserves information even with memory constraints. Large quantities of data (many images) of high dimensionality (due to multiple sensors) and new information arriving incrementally (a function of the temporal dynamics of any natural process) can now be processed. Furhermore, since the learning is done on-line, it can be implemented in real-time. The methodology developed was tested to determine external quality of tomatoes based on visual information. An improved model for color sorting which is stable and does not require recalibration for each season was developed for color determination. Excellent classification results were obtained for both color and firmness classification. Results indicted that maturity classification can be obtained using a drop-impact and a vision sensor in order to predict the storability and marketing of harvested fruits. In conclusion: We have been able to define quantitatively the critical parameters in the quality sorting and grading of both fresh market cantaloupes and tomatoes. We have been able to accomplish this using nondestructive measurements and in a manner consistent with expert human grading and in accordance with market acceptance. This research constructed and used large databases of both commodities, for comparative evaluation and optimization of expert system, statistical and/or neural network models. The models developed in this research were successfully tested, and should be applicable to a wide range of other fruits and vegetables. These findings are valuable for the development of on-line grading and sorting of agricultural produce through the incorporation of multiple measurement inputs that rapidly define quality in an automated manner, and in a manner consistent with the human graders and inspectors.
2
Rose, Sara, Laura Baumann, Patrick Emblidge, et al. Protocol implementation plan for national parks in the Pacific Northwest, North American Bat Monitoring Program for surveying summertime bat occurrence with stationary deployments of echolocation recording devices: Version 1.0. National Park Service, 2024. http://dx.doi.org/10.36967/2301735.
Full textAbstract:
he Northwestern Hub for Bat Population Research and Monitoring (NW Bat Hub), as part of the North American Bat Monitoring Program (NABat), developed a regional protocol (Rodriguez et al. 2019) to guide multi-agency collaborative implementation of summertime acoustic surveys to track the status and trends of bat populations. See Loeb et al. (2015) and Reichert et al. (2021) for a description of the full NABat plan including winter bat colony counting. The protocol provides guidance specifically for parks in the National Park Service (NPS) North Coast Cascades, Upper Columbia Basin, and Klamath Networks. This protocol implementation plan (PIP) outlines how the protocol will be implemented by NW Bat Hub and National Park staff within this three-network/three-state (Washington, Oregon, Idaho) region. Specific topics for NPS implementation of the protocol that require additional details beyond those outlined by Rodriguez et al. (2019) are the specific NPS requirements for data management, analysis, reporting, and a budget for NPS to contribute to long-term sustainability of the NW Bat Hub and protocol implementation. Surveys will be conducted on and adjacent to NPS lands collaboratively by NPS and NW Bat Hub staff. Roles and responsibilities for protocol implementation with be established prior to each field season depending on staff capacities and interests. This PIP is versionable and it will be updated periodically alongside updates to the protocol itself, and as other operational changes are made. The PIP serves to document why and how NPS will engage as an NABat partner in the Pacific Northwest and with the national NABat program led by US Geological Survey Fort Collins Science Center (USGS-FORT), the role of summertime acoustic monitoring as a way for NPS to meet its vital signs monitoring goals for bats (Garrett et al. 2007), the stewardship of acoustic data by NW Bat Hub and USGS-FORT on behalf of NPS, and the Hub?s role as a source of coordinated conservation expertise for NPS and other regional collaborators. This PIP contains a detailed overview of how the protocol will be used in National Park units in the Pacific Northwest. It is intended for use by NPS and NW Bat Hub coordinators and team leaders, program administrators, field crew leads, and data analysts who need to be conversant in the details of the program. Standard operating procedures that detail the operational-level information can be located in the protocol narrative by Rodriguez et al. (2019).