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Gamut Mapping through Perceptually-Based Contrast Reduction [chapter]

Syed Waqas Zamir, Javier Vazquez-Corral, Marcelo Bertalmío
2014 Lecture Notes in Computer Science  
In this paper we present a spatial gamut mapping algorithm that relies on a perceptually-based variational framework.  ...  We show how by varying the importance of the contrast term in the image functional we are able to perform gamut reduction.  ...  The contribution of this paper is to propose a perceptually inspired GMA where gamut reduction is achieved through contrast reduction, by adapting a framework [5] , [4] that is inspired by the properties  ... 
doi:10.1007/978-3-642-53842-1_1 fatcat:5dzyy75cajaxxhwingtwul3bqa

Improve gamut mapping of Color Management System by perceptual quality-oriented analysis

Shaohua Chen, Azeddine Beghdadi
2011 3rd European Workshop on Visual Information Processing  
not damage severely the perceptual quality while enabling an image gamut boundary reduction which leads to less perceptual distortion during gamut mapping.  ...  Through IGBR, a direct gamut mapping without clipping or compressing is possible if the reduced image gamut boundary fortunately falls into output device gamut, or an ICC Media-Relative Rendering Intent  ... 
doi:10.1109/euvip.2011.6045543 dblp:conf/euvip/ChenB11 fatcat:sqid34uydbajroveyu3u37vvfu

Image processing applications through a variational perceptually-based color correction related to Retinex

Javier Vazquez-Corral, Syed Waqas Zamir, Adrian Galdran, David Pardo, Marcelo; Bertalmío
2016 IS&T International Symposium on Electronic Imaging Science and Technology  
Back in 2007 a variational perceptually-based color correction model related to Retinex was presented by Bertalmío and colleagues.  ...  In this paper we first comment on this model and later we review different image processing applications that have been obtained by performing small modifications to it, namely color gamut mapping and  ...  Gamut reduction Authors devised a double-iterative process for the gamut reduction case in order to select the best weight to be applied to the contrast term.  ... 
doi:10.2352/issn.2470-1173.2016.6.retinex-317 fatcat:zmswzczx4nhttpy5abpyzkopge

Wide Color Gamut Image Content Characterization: Method, Evaluation, and Applications

Junghyuk Lee, Toinon Vigier, Patrick Le Callet, Jong-Seok Lee
2020 IEEE transactions on multimedia  
In this paper, we propose a novel framework to characterize a wide color gamut image content based on perceived quality due to the processes that change color gamut, and demonstrate two practical use cases  ...  Finally, the framework is applied to content selection in a gamut mapping evaluation scenario in order to enhance reliability and robustness of the evaluation results.  ...  One is the state-of-the-art gamut reduction algorithm [7] that adaptively modifies local contrast of pixels residing outside of the target gamut based on the Retinex theory [8] .  ... 
doi:10.1109/tmm.2020.3032026 fatcat:w2iwxxoihjdnha2rntbdas7tkq

Wide Color Gamut Image Content Characterization: Method, Evaluation, and Applications [article]

Junghyuk Lee, Toinon Vigier, Patrick Le Callet, Jong-Seok Lee
2021 arXiv   pre-print
In this paper, we propose a novel framework to characterize a wide color gamut image content based on perceived quality due to the processes that change color gamut, and demonstrate two practical use cases  ...  Finally, the framework is applied to content selection in a gamut mapping evaluation scenario in order to enhance reliability and robustness of the evaluation results.  ...  One is the state-of-the-art gamut reduction algorithm [7] that adaptively modifies local contrast of pixels residing outside of the target gamut based on the Retinex theory [8] .  ... 
arXiv:2101.07451v1 fatcat:e4x2ianwfvfhrk27lhvgm5ypjm

Gamut Reduction Through Local Saturation Reduction

Syed Waqas Zamir, Javier Vazquez-Corral, Marcelo Bertalmío
2017 Final program and proceedings (Color and Imaging Conference)  
This work presents a local (spatially-variant) gamut reduction algorithm that operates only on the saturation channel of the image, keeping hue and value constant.  ...  Proposed Gamut Reduction Algorithm In their kernel-based Retinex (KBR) formulation, Bertalmío et al.  ...  where cinema footage needs to be passed through a gamut reduction method in order to be displayed on a television screen [4] , [10] .  ... 
doi:10.2352/issn.2169-2629.2017.25.214 fatcat:x7dqxskks5abnoqffa3t4p7hru

Spatial gamut mapping among non-inclusive gamuts

Javier Vazquez-Corral, Marcelo Bertalmío
2018 Journal of Visual Communication and Image Representation  
In this work we unify and expand two recent methods for gamut extension and reduction, so as to simultaneously perform both forms of gamut mapping in different regions of the same image without introducing  ...  Gamut mapping transforms the color gamut of an image to that of a target device.  ...  [10] propose to perform a perceptually-based image energy minimization to move all the outof-gamut pixels to the gamut boundary.  ... 
doi:10.1016/j.jvcir.2018.05.012 fatcat:ga7q7et275f57ng43t5beaax7m

Cluster-based color space optimizations

Cheryl Lau, Wolfgang Heidrich, Rafal Mantiuk
2011 2011 International Conference on Computer Vision  
Often, these transformations involve information loss, for example when mapping from color to grayscale for printing, from multispectral or multiprimary data to tristimulus spaces, or from one color gamut  ...  Our approach can be applied to a host of color transformation problems including color to gray, gamut mapping, conversion of multispectral and multiprimary data to tristimulus colors, and image optimization  ...  Other work focuses on perceptual accuracy based on the Helmholtz-Kohlrausch effect [29] .  ... 
doi:10.1109/iccv.2011.6126366 dblp:conf/iccv/LauHM11 fatcat:s2w3d5gjynaghp3ndaq3wwhnqe

Redundancy Removal in Video frames using Luminance Masking

Snehal A., Sonal K.
2016 International Journal of Computer Applications  
In this context, an Intensity Dependant Spatial Quantization (IDSQ) perceptual means is proposed which attempts the intensity masking of the human visual system and perceptually adjusts quantization.  ...  complication implementation requirements The proposed method has been incorporated into the HEVC reference model for the HEVC Range Extensions and its performance was judged by measuring the bit rate reduction  ...  This residual frame can be evaluated as a ratio between the HDR and tonemapped LDR image [4] or through a perceptually improved nonlinear mapping function].  ... 
doi:10.5120/ijca2016909873 fatcat:tizjyiekz5e3bdjio4vlthbab4

Review of fluorescence guided surgery visualization and overlay techniques

Jonathan T. Elliott, Alisha V. Dsouza, Scott C. Davis, Jonathan D. Olson, Keith D. Paulsen, David W. Roberts, Brian W. Pogue
2015 Biomedical Optics Express  
Five practical suggestions are outlined for optimal display orientation, color map, transparency/alpha function, dynamic range compression, and color perception check. , "Coregistered fluorescence-enhanced  ...  The koufonisi colormap is perceptually balanced and has mid-high colors which circumscribe the brain tissue gamut, giving a uniform chromatic contrast.  ...  The ability to display a wider color gamut could extend this high-contrast imagery to color map representations of NIR fluorophores.  ... 
doi:10.1364/boe.6.003765 pmid:26504628 pmcid:PMC4605037 fatcat:3xtvatctdrevtbkbdziu6oxgwq

High Dynamic Range Imaging Technology [Lecture Notes]

Alessandro Artusi, Thomas Richter, Touradj Ebrahimi, Rafal K. Mantiuk
2017 IEEE Signal Processing Magazine  
This type of degradation is typical for inverse tone mapping when, due to contrast stretching, contouring artifacts start to appear. • reversal of visible contrast, i.e., if the contrast in the test image  ...  To improve encoding performance, the redundancy information is minimized through the decorrelation between the SDR and HDR streams, achieving a reduction in size of the HDR stream to about 30% of the size  ... 
doi:10.1109/msp.2017.2716957 fatcat:fy3nlxptjjbkve6cdiczxr2abe

High Dynamic Range Imaging Technology [Lecture Notes]

Artusi Alessandro, Richter Thomas, Ebrahimi Touradj, Mantiuk Rafal
2017 Zenodo  
This type of degradation is typical for inverse tone mapping when, due to contrast stretching, contouring artifacts start to appear. • reversal of visible contrast, i.e., if the contrast in the test image  ...  To improve encoding performance, the redundancy information is minimized through the decorrelation between the SDR and HDR streams, achieving a reduction in size of the HDR stream to about 30% of the size  ... 
doi:10.5281/zenodo.1038994 fatcat:uqj6iqtgyfanvji4swxviazrxu

Perception-Based Visualization of Manifold-Valued Medical Images Using Distance-Preserving Dimensionality Reduction

G. Hamarneh, C. McIntosh, M. S. Drew
2011 IEEE Transactions on Medical Imaging  
The 3D CIELAB perceptual color space is adopted as the range of the distance preserving mapping, with a final similarity transform mapping colors to a maximum gamut size.  ...  We use multi-dimensional scaling distance-preserving mapping to render similar pixels (e.g. DT or TAC pixels) with perceptually similar colors.  ...  corticocortical connections through the CC in contrast to the fibres through the fornix [51] , where the latter connect the hippocamus to the septum,   +1.00e − 002 +0.00e + 000 +0.00e + 000 +0.00e  ... 
doi:10.1109/tmi.2011.2111422 pmid:21296705 fatcat:ih3eocdl4jctha6lhnppngo7ae

Good Colour Maps: How to Design Them [article]

Peter Kovesi
2015 arXiv   pre-print
Many colour maps provided by vendors have highly uneven perceptual contrast over their range.  ...  Colour maps may also have perceptual discontinuities that induce the appearance of false features.  ...  McNames [22] proposed a colour map designed to reproduce well in both colour and grey scale. It is based on a spiral path through RGB space.  ... 
arXiv:1509.03700v1 fatcat:nvc473tuufbbbox4e52mwtc2su

Key Color Priority Based Image Recoloring for Dichromats [chapter]

Chun-Rong Huang, Kuo-Chuan Chiu, Chu-Song Chen
2010 Lecture Notes in Computer Science  
Moreover, our approach can preserve both the color contrast and naturalness efficiently and effectively according to the key color priority.  ...  These Sim(C i ) form an anchor group in the visual gamut of dichromats. The remaining key colors are re-mapped based on these reference colors by the contrast maintenance rule (5).  ...  The goals of the defined objective functions are to preserve color contrast and brightness, keep the mapped colors in gamut, and maintain naturalness.  ... 
doi:10.1007/978-3-642-15696-0_59 fatcat:h373mfbj55awresfgtkwgxwify
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