Academic literature on the topic 'Image Based Light'

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Journal articles on the topic "Image Based Light"

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Zhu, Zhiqin, Yaqin Luo, Hongyan Wei, et al. "Atmospheric Light Estimation Based Remote Sensing Image Dehazing." Remote Sensing 13, no. 13 (2021): 2432. http://dx.doi.org/10.3390/rs13132432.

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Remote sensing images are widely used in object detection and tracking, military security, and other computer vision tasks. However, remote sensing images are often degraded by suspended aerosol in the air, especially under poor weather conditions, such as fog, haze, and mist. The quality of remote sensing images directly affect the normal operations of computer vision systems. As such, haze removal is a crucial and indispensable pre-processing step in remote sensing image processing. Additionally, most of the existing image dehazing methods are not applicable to all scenes, so the correspondi
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Mihálik, A., and R. Ďurikovič. "Image-based BRDF Representation." Journal of Applied Mathematics, Statistics and Informatics 11, no. 2 (2015): 47–56. http://dx.doi.org/10.1515/jamsi-2015-0011.

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Abstract To acquire a certain level of photorealism in computer graphics, it is necessary to analyze, how the materials scatter the incident light. In this work, we propose the method to direct rendering of isotropic bidirectional reflectance function (BRDF) from the small set of images. The image-based rendering is focused to synthesize as accurately as possible scenes composed of natural and artificial objects. The realistic image synthesis of BRDF data requires evaluation of radiance over the multiple directions of incident and scattered light from the surface. In our approach the images de
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Sun, Xiankun, Huijie Liu, Shiqian Wu, Zhijun Fang, Chengfan Li, and Jingyuan Yin. "Low-Light Image Enhancement Based on Guided Image Filtering in Gradient Domain." International Journal of Digital Multimedia Broadcasting 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/9029315.

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We propose a novel approach for low-light image enhancement. Based on illumination-reflection model, the guided image filter is employed to extract the illumination component of the underlying image. Afterwards, we obtain the reflection component and enhance it by nonlinear functions, sigmoid and gamma, respectively. We use the first-order edge-aware constraint in the gradient domain to achieve good edge preserving features of enhanced images and to eliminate halo artefact effectively. Moreover, the resulting images have high contrast and ample details due to the enhanced illumination and refl
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Kanimozhi, T., and K. Latha. "Evaluation of Light Inspired Optimization Algorithm-Based Image Retrieval." Applied Mechanics and Materials 573 (June 2014): 529–36. http://dx.doi.org/10.4028/www.scientific.net/amm.573.529.

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Image retrieval system becoming a more popular in all the disciplines of image search. In real-time, interactive image retrieval system has become more accurate, fast and scalable to large collection of image databases. This paper presents a unique method for an image retrieval system based on firefly algorithm, which improve the accuracy and computation time of the image retrieval system. The firefly algorithm is utilized to optimize the image retrieval process via search for nearly optimal combinations between the corresponding features as well as finding out approximate optimized weights fo
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Liu, Yun, Gangyi Jiang, Zhidi Jiang, Zhiyong Pan, Mei Yu, and Yo-Sung Ho. "Pseudoreference Subaperture Images and Microlens Image-Based Blind Light Field Image Quality Measurement." IEEE Transactions on Instrumentation and Measurement 70 (2021): 1–15. http://dx.doi.org/10.1109/tim.2021.3096865.

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Kim, Heekang, and Sungho Kim. "Per-Norm Based Automotive Headlamp Detection in Hypersepctral Image for Visible Light Communication." International Journal of Computer and Electrical Engineering 8, no. 1 (2016): 12–21. http://dx.doi.org/10.17706/ijcee.2016.8.1.12-21.

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Liu, Shouxin, Wei Long, Lei He, Yanyan Li, and Wei Ding. "Retinex-Based Fast Algorithm for Low-Light Image Enhancement." Entropy 23, no. 6 (2021): 746. http://dx.doi.org/10.3390/e23060746.

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We proposed the Retinex-based fast algorithm (RBFA) to achieve low-light image enhancement in this paper, which can restore information that is covered by low illuminance. The proposed algorithm consists of the following parts. Firstly, we convert the low-light image from the RGB (red, green, blue) color space to the HSV (hue, saturation, value) color space and use the linear function to stretch the original gray level dynamic range of the V component. Then, we estimate the illumination image via adaptive gamma correction and use the Retinex model to achieve the brightness enhancement. After t
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Liu, Zheng, Su Mei Cui, He Yin, and Yu Chi Lin. "Comparative Analysis of Image Measurement Accuracy in High Temperature Based on Visible and Infrared Vision." Applied Mechanics and Materials 300-301 (February 2013): 1681–86. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.1681.

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Image measurement is a common and non-contact dimensional measurement method. However, because of light deflection, visible light imaging is influenced largely, which makes the measurement accuracy reduce greatly. Various factors of visual measurement in high temperature are analyzed with the application of Planck theory. Thereafter, by means of the light dispersion theory, image measurement errors of visible and infrared images in high temperature which caused by light deviation are comparatively analyzed. Imaging errors of visible and infrared images are proposed quantitatively with experime
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Chen, Liu Kui, Zuo Jin Li, Ying Wu, and Yi Xiang. "Dynamic Range Extend on Finger Vein Image Based on Infrared Multi-Light-Intensity Vascular Imaging." Applied Mechanics and Materials 427-429 (September 2013): 1832–35. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.1832.

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This paper proposes an extending dynamic range method for infrared finger vein image acquisition by multi-light-intensity imaging. The captured images contain high dynamic range by different light intensity irradiating. The fast switch of light-intensity is synchronous with the camera imaging and the current image illumination analysis, these ensure the light intensity is automatic regulated and the captured images are in pixel-level registration. The experiment shows the proposed acquisition method is effective and the captured multi-light-intensity finger vein images are convenient for image
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Sari, Suhaila, Wong Zhi Lin, Hazli Roslan, Nik Shahidah Afifi Mohd Taujuddin, Chua King Lee, and Siti Zarina Mohd Muji. "Noise Level Based Denoising Technique Utilizing Patch- Based Noise Level Estimator for Low-Light Condition Surveillance Image." International Journal of Engineering & Technology 7, no. 4.30 (2018): 544. http://dx.doi.org/10.14419/ijet.v7i4.30.28173.

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Digital Image Processing is a method to obtain image or to take out useful details or feature from image. The noise will cause the results of error in the image acquisition process. Generation of higher noise levels in the low light condition environment will often result in oversmoothed edges and textures during the denoising process because of lower signal levels in the image. Thus, this study goal is to improve denoising techniques for Poisson noise removal in low light condition for surveillance images. The Patch-Based Noise Level Estimator is designed to estimate the noise level of noisy
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Dissertations / Theses on the topic "Image Based Light"

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Lindsay, Clifford. "Programmable Image-Based Light Capture for Previsualization." Digital WPI, 2013. https://digitalcommons.wpi.edu/etd-dissertations/88.

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Previsualization is a class of techniques for creating approximate previews of a movie sequence in order to visualize a scene prior to shooting it on the set. Often these techniques are used to convey the artistic direction of the story in terms of cinematic elements, such as camera movement, angle, lighting, dialogue, and character motion. Essentially, a movie director uses previsualization (previs) to convey movie visuals as he sees them in his "minds-eye". Traditional methods for previs include hand-drawn sketches, Storyboards, scaled models, and photographs, which are created by artists to
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Löw, Joakim, Anders Ynnerman, Per Larsson, and Jonas Unger. "HDR Light Probe Sequence Resampling for Realtime Incident Light Field Rendering." Linköpings universitet, Visuell informationsteknologi och applikationer, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18052.

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This paper presents a method for resampling a sequence of high dynamic range light probe images into a representation of Incident Light Field (ILF) illumination which enables realtime rendering. The light probe sequences are captured at varying positions in a real world environment using a high dynamic range video camera pointed at a mirror sphere. The sequences are then resampled to a set of radiance maps in a regular three dimensional grid before projection onto spherical harmonics. The capture locations and amount of samples in the original data make it inconvenient for direct use in render
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Yang, Jason C. (Jason Chieh-Sheng) 1977. "A light field camera for image based rendering." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/86575.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.<br>Includes bibliographical references (leaves 54-55).<br>by Jason C. Yang.<br>M.Eng.
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Hajisharif, Saghi. "Real-time image based lighting with streaming HDR-light probe sequences." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-91324.

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This work presents a framework for shading of virtual objects using high dynamic range (HDR) light probe sequences in real-time. The method is based on using HDR environment map of the scene which is captured in an on-line process by HDR video camera as light probes [32]. In each frame of the HDR video, an optimized CUDA kernel is used to project incident lighting into spherical harmonics in real time. Transfer coefficients are calculated in an offline process. Using precomputed radiance transfer the radiance calculation reduces to a low order dot product between lighting and transfer coeffici
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Unger, Jonas, Stefan Gustavson, and Anders Ynnerman. "Spatially Varying Image Based Lighting by Light Probe Sequences, Capture, Processing and Rendering." Linköpings universitet, Visuell informationsteknologi och applikationer, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16285.

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We present a novel technique for capturing spatially or temporally resolved light probe sequences, and using them for image based lighting. For this purpose we have designed and built a real-time light probe, a catadioptric imaging system that can capture the full dynamic range of the lighting incident at each point in space at video frame rates, while being moved through a scene. The real-time light probe uses a digital imaging system which we have programmed to capture high quality, photometrically accurate color images of 512×512 pixels with a dynamic range of 10000000:1 at 25 frames per se
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Unger, Jonas. "Incident Light Fields." Doctoral thesis, Linköpings universitet, Visuell informationsteknologi och applikationer, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16287.

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Image based lighting, (IBL), is a computer graphics technique for creating photorealistic renderings of synthetic objects such that they can be placed into real world scenes. IBL has been widely recognized and is today used in commercial production pipelines. However, the current techniques only use illumination captured at a single point in space. This means that traditional IBL cannot capture or recreate effects such as cast shadows, shafts of light or other important spatial variations in the illumination. Such lighting effects are, in many cases, artistically created or are there to emphas
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Nieto, Grégoire. "Light field remote vision." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAM051/document.

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Les champs de lumière ont attisé la curiosité durant ces dernières décennies. Capturés par une caméra plénoptique ou un ensemble de caméras, ils échantillonnent la fonction plénoptique qui informe sur la radiance de n'importe quel rayon lumineux traversant la scène observée. Les champs lumineux offrent de nombreuses applications en vision par ordinateur comme en infographie, de la reconstruction 3D à la segmentation, en passant par la synthèse de vue, l'inpainting ou encore le matting par exemple.Dans ce travail nous nous attelons au problème de reconstruction du champ de lumière dans le but d
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Mathews, Abraham. "Smart Home Based Li-Fi System : Stereo Audio & Image Streaming by Visible light." Thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-32835.

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To light up the world of technology, where wireless communication has bloomed to a great extend which requires a lot of data to be transmitted and received every fraction of the second a new era is coming. Electro-magnetic waves i.e., radio waves are the main way to transmit wireless data but certain limitations are there because radio waves can only support less bandwidth because of compact spectrum availability and intrusions. Visible Light Communication (VLC) has come to take way those issues. The new technology Li-Fi which stands for Light-Fidelity is a new kind of wireless communication s
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Vance, Alexander Phillip. "The Use of Graphics, Animation, and Interactivity in a Computer-Based Lesson on Light in Digital Space." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd714.pdf.

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Valente, Caio de Freitas. "Iluminação baseada em séries temporais de imagens com aplicações em realidade mista." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-20102016-125231/.

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A estimação da iluminação é essencial para aplicações de realidade mista que se propõem a integrar elementos virtuais a cenas reais de maneira harmoniosa e sem a perda do realismo. Um dos métodos mais utilizados para fazer essa estimação é conhecido como iluminação baseada em imagens (Image Based Lighting - IBL), método que utiliza light probes para capturar a intensidade da iluminação incidente em uma cena. Porém, IBL estima a iluminação incidente apenas para um determinado instante e posição. Nesta dissertação, será avaliado um modelo de iluminação que utiliza séries temporais de imagens de
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Books on the topic "Image Based Light"

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Center, Langley Research, ed. Modes of visual recognition and perceptually relevant sketch-based coding of images. National Aeronautics and Space Administration, Langley Research Center, 1991.

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Murray, Jonathan, and Nea Ehrlich, eds. Drawn from Life. Edinburgh University Press, 2018. http://dx.doi.org/10.3366/edinburgh/9780748694112.001.0001.

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Documentary cinema has always drawn from real life. However, an increasing number of contemporary filmmakers go further still, drawing onscreen images of reality through a range of animated filmmaking techniques and aesthetics. This book is the first of its kind, exploring the field of animated documentary film from a diverse range of scholarly and practice-based perspectives. The book’s chapters explore and propose answers to a range of questions that preoccupy twenty-first-century film artists and audiences alike: What are the historical roots of animated documentary? What kinds of reasons i
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West, Mark D. Drunk Japan. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190070847.001.0001.

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What does it mean to be drunk in Japan? This book provides a rich description of Japanese alcohol consumption, drinking culture, and intoxication distilled from a unique data set: thousands of published Japanese court opinions. The opinions bring to light fascinating patterns in what, where, and why people drink in Japan, but they also focus to a surprising extent on characteristics of individual litigants. Courts humanize people in the opinions in various ways, for instance, by dropping clues about their social status (occupation, wealth, gender, education, and the like) or by discussing in d
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Smeets, Roel. Character Constellations. Leuven University Press, 2021. http://dx.doi.org/10.11116/9789461664129.

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Fiction has a major social impact, not least because it co-shapes the image that society has of various social groups. Drawing on a collection of 170 contemporary Dutch-language novels, Character Constellations presents a range of data-driven, statistical models to study depictions of characters in terms of gender, race, ethnicity, class, age, sexuality, and other identity categories. Incorporating the tools of network analysis, each chapter highlights an aspect of fictional social networks that affects the representation of social groups: their centrality, their communities, and their conflic
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Hedenborg White, Manon. The Eloquent Blood. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190065027.001.0001.

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The study analyzes constructions of femininity and feminine sexuality in interpretations of the goddess Babalon, a central deity in the British occultist Aleister Crowley’s (1875–1947) religion Thelema. Babalon is based on Crowley’s positive reinterpretation of the biblical Whore of Babylon and symbolizes liberated female sexuality and the spiritual modality of passionate union with existence. Analyzing historical and contemporary written sources, qualitative interviews, and ethnographic fieldwork in the Anglo-American esoteric milieu, the study traces interpretations of Babalon from the works
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Gallese, Vittorio, and Michele Guerra. The Empathic Screen. Translated by Frances Anderson. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198793533.001.0001.

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Why do people go to the movies? What does it mean to watch a movie? To what extent does our perception of the fictional nature of movies differ from our daily perception of the real world? The authors, a neuroscientist and a film theorist, propose a new multidisciplinary approach to images and film that can provide answers to these questions. According to the authors, film art, based on the interaction between spectators and the world on the screen, and often described in terms of immersion, impressions of reality, simulation, and involvement of the spectator’s body in the fictitious world he
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Minett, Mark. Robert Altman and the Elaboration of Hollywood Storytelling. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197523827.001.0001.

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Robert Altman and the Elaboration of Hollywood Storytelling reveals an Altman barely glimpsed in previous critical accounts of the filmmaker. This re-examination of his seminal work during the “Hollywood Renaissance” or “New Hollywood” period of the early 1970s (including M*A*S*H, Brewster McCloud, McCabe &amp; Mrs. Miller, Images, The Long Goodbye, Thieves Like Us, California Split, and Nashville) sheds new light on both the films and the filmmaker, reframing Altman as a complex, pragmatic innovator whose work exceeds, but is also grounded in, the norms of classical Hollywood storytelling rat
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Book chapters on the topic "Image Based Light"

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Dirik, Ahmet Emir. "Source Attribution Based on Physical Defects in Light Path." In Digital Image Forensics. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-0757-7_7.

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Yu, Jianjun, Xubo Yang, and Shuangjiu Xiao. "Interactive Image Based Relighting with Physical Light Acquisition." In Entertainment Computing – ICEC 2007. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-74873-1_35.

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Ferhat, Onur, Arcadi Llanza, and Fernando Vilariño. "A Feature-Based Gaze Estimation Algorithm for Natural Light Scenarios." In Pattern Recognition and Image Analysis. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19390-8_64.

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Xu, Chenmin, Shijie Hao, Yanrong Guo, and Richang Hong. "Enhancing Low-Light Images with JPEG Artifact Based on Image Decomposition." In Advances in Multimedia Information Processing – PCM 2018. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00767-6_1.

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Oulefki, Adel, Mustapha Aouache, and Messaoud Bengherabi. "Low-Light Face Image Enhancement Based on Dynamic Face Part Selection." In Pattern Recognition and Image Analysis. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31321-0_8.

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Amor, Boulbaba Ben, Mohsen Ardabilian, and Liming Chen. "3D Face Modeling Based on Structured-Light Assisted Stereo Sensor." In Image Analysis and Processing – ICIAP 2005. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11553595_103.

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Zhao, Tan, Hui Ding, Yuanyuan Shang, and Xiuzhuang Zhou. "Low-Light Image Enhancement Based on Constrained Norm Estimation." In Communications in Computer and Information Science. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-7299-4_30.

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Gan, Zhongxue, and Qing Tang. "Image Processing of Laser Structured-Light Based Vision System." In Advanced Topics in Science and Technology in China. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-18287-7_5.

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Bani Issa, Obada M. A., Venus W. Samawi, and Jehad Q. Alnihoud. "Traffic Light Control Based on the Road Image Analysis." In Transactions on Engineering Technologies. Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9804-4_47.

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Zhang, Xuanyu, Guosheng Yang, and Jing Jiang. "Spectral Pooling Based CNN Model Compression for Light Field Depth-Estimation." In Image and Graphics Technologies and Applications. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9917-6_32.

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Conference papers on the topic "Image Based Light"

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Park, Dubok, Minjae Kim, Bonhwa Ku, Sangmin Yoon, and David K. Han. "Image enhancement for extremely low light conditions." In 2014 International Conference on Advanced Video and Signal Based Surveillance (AVSS). IEEE, 2014. http://dx.doi.org/10.1109/avss.2014.6918686.

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Tanaka, Masayuki, Takashi Shibata, and Masatoshi Okutomi. "Gradient-Based Low-Light Image Enhancement." In 2019 IEEE International Conference on Consumer Electronics (ICCE). IEEE, 2019. http://dx.doi.org/10.1109/icce.2019.8662059.

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Hanmante, Bhagyashree P., and Manisha Ingle. "Underwater Image Restoration Based on Light Absorption." In 2018 Fourth International Conference on Computing Communication Control and Automation (ICCUBEA). IEEE, 2018. http://dx.doi.org/10.1109/iccubea.2018.8697518.

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Liu, Dong, Lizhi Wang, Li Li, Zhiwei Xiong, Feng Wu, and Wenjun Zeng. "Pseudo-sequence-based light field image compression." In 2016 IEEE International Conference on Multimedia & Expo Workshops (ICMEW). IEEE, 2016. http://dx.doi.org/10.1109/icmew.2016.7574674.

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Zhu, Dong, ChunHong WU, Yunluo Liu, and Dongmei Fu. "3D reconstruction based on light field images." In Ninth International Conference on Graphic and Image Processing, edited by Hui Yu and Junyu Dong. SPIE, 2018. http://dx.doi.org/10.1117/12.2304504.

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Li, Junke, and Xin Jin. "Frequency Descriptor based Light Field Depth Estimation." In 2019 IEEE Visual Communications and Image Processing (VCIP). IEEE, 2019. http://dx.doi.org/10.1109/vcip47243.2019.8965944.

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Kurihara, Kazuki, Hiromi Yoshida, and Youji Iiguni. "Low-Light Image Enhancement via Adaptive Shape and Texture Prior." In 2019 15th International Conference on Signal-Image Technology & Internet-Based Systems (SITIS). IEEE, 2019. http://dx.doi.org/10.1109/sitis.2019.00024.

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Jiang, Yiming, Yongjin Liu, Qunnie Peng, Feiran Jie, and Delie Ming. "Infrared Image Generation Method Based on Visible Light Remote Sensing Image." In 2019 IEEE 3rd Advanced Information Management, Communicates, Electronic and Automation Control Conference (IMCEC). IEEE, 2019. http://dx.doi.org/10.1109/imcec46724.2019.8984157.

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Stepanov, Milan, Giuseppe Valenzise, and Frederic Dufaux. "Hybrid Learning-Based And Hevc-Based Coding Of Light Fields." In 2020 IEEE International Conference on Image Processing (ICIP). IEEE, 2020. http://dx.doi.org/10.1109/icip40778.2020.9190971.

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Yamazato, Takaya. "Image sensor based visible light communication for V2X." In 2015 IEEE Photonics Society Summer Topical Meeting Series (SUM). IEEE, 2015. http://dx.doi.org/10.1109/phosst.2015.7248248.

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Reports on the topic "Image Based Light"

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Hart, Carl R., and Gregory W. Lyons. A Measurement System for the Study of Nonlinear Propagation Through Arrays of Scatterers. Engineer Research and Development Center (U.S.), 2020. http://dx.doi.org/10.21079/11681/38621.

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Various experimental challenges exist in measuring the spatial and temporal field of a nonlinear acoustic pulse propagating through an array of scatterers. Probe interference and undesirable high-frequency response plague typical approaches with acoustic microphones, which are also limited to resolving the pressure field at a single position. Measurements made with optical methods do not have such drawbacks, and schlieren measurements are particularly well suited to measuring both the spatial and temporal evolution of nonlinear pulse propagation in an array of scatterers. Herein, a measurement
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