Software for simulating dichromatic perception of video streams

Luque, Marı́a José; Sáiz, Dolores de Fez; Acevedo, Pablo

doi:10.1002/col.21816

Cited by 3 publications

(4 citation statements)

References 23 publications

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“…It is important to note other algorithms exist for simulating CVD and colorblindness [ 27 , 28 ], including the “corresponding pair algorithm,” which can account for different viewing conditions [ 29 , 30 ]. We found the model [ 26 ] used here is the best for our purposes since it is not limited to dichromatic vision simulation.…”

Section: Methodsmentioning

confidence: 99%

Optimizing colormaps with consideration for color vision deficiency to enable accurate interpretation of scientific data

2018

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Color vision deficiency (CVD) affects more than 4% of the population and leads to a different visual perception of colors. Though this has been known for decades, colormaps with many colors across the visual spectra are often used to represent data, leading to the potential for misinterpretation or difficulty with interpretation by someone with this deficiency. Until the creation of the module presented here, there were no colormaps mathematically optimized for CVD using modern color appearance models. While there have been some attempts to make aesthetically pleasing or subjectively tolerable colormaps for those with CVD, our goal was to make optimized colormaps for the most accurate perception of scientific data by as many viewers as possible. We developed a Python module, cmaputil, to create CVD-optimized colormaps, which imports colormaps and modifies them to be perceptually uniform in CVD-safe colorspace while linearizing and maximizing the brightness range. The module is made available to the science community to enable others to easily create their own CVD-optimized colormaps. Here, we present an example CVD-optimized colormap created with this module that is optimized for viewing by those without a CVD as well as those with red-green colorblindness. This colormap, cividis, enables nearly-identical visual-data interpretation to both groups, is perceptually uniform in hue and brightness, and increases in brightness linearly.

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Section: Methodsmentioning

confidence: 99%

Optimizing colormaps with consideration for color vision deficiency to enable accurate interpretation of scientific data

2018

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“…A recent paper (Luque et al, 2014) shows that similar transformations are possible even with video streams. Several websites (i.e., http://play.google.com/store/apps) provide free appli- Figure 11.…”

Section: Discussionmentioning

confidence: 99%

“…Most of the times, color transformation is done using some kind of software (Capilla, Díez-Ajenjo, Luque, & Malo, 2004;Luque, Fez, & Acevedo, 2014;Viénot, Brettel, & Mollon, 1999). Alternatively, optic filtering can be used (http://www.variantor.co.uk/page.…”

Section: Introductionmentioning

confidence: 99%

An experimental method for the assessment of color simulation tools

2014

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“…For this reason, their applicability does not go beyond curiosity driven self-testing. Algorithms simulating dichromatic color perception have also been developed, to illustrate the kind of color-coded information losses and the difficulties for object detection suffered by dichromatic subjects 18,[24][25][26][27] . Different more or less successful algorithms have also been proposed to modify the color palette of an image in order to allow dichromatic subjects to perceive them with minimum information loss 28,29 .…”

Section: In Spite Of the Similarity Between Devices The Analysis Of mentioning

confidence: 99%

Can Applications Designed to Evaluate Visual Function Be Used in Different iPads?

Sáiz¹,

Luque

García-Domene

et al. 2018

Optom Vis Sci

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Statement of Significance: Apple devices could be suitable for vision tests, provided that the test has been correctly adapted to the device, taking into account the spatial and colorimetric characterization of the screen. Purpose: The majority of vision apps have not been developed by vision or colorimetry experts and suffer from conceptual and design errors that may lead average users to an erroneous assessment of their visual capabilities. The reliability of vision tests depends on the accurate generation of the necessary visual stimuli in a particular device. Our aim was to ascertain whether a given colour test, designed for a colorimetrically characterized device, might be used in another similar device. Method: We evaluated colour reproduction errors in three iPad tablets of different models with Retina screens, using their individual colour characterization models and the model derived for another device. Results: Our results showed, even with this small sample, the high degree of error caused when disregarding the fact that the colorimetric design valid for a given device may not be correct when displayed in another. Conclusion: The distortion of the chromatic content may lead to subjects with vision defects to pass as normal or vice versa, compromising diagnosis reliability.

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Software for simulating dichromatic perception of video streams

Cited by 3 publications

References 23 publications

Optimizing colormaps with consideration for color vision deficiency to enable accurate interpretation of scientific data

Optimizing colormaps with consideration for color vision deficiency to enable accurate interpretation of scientific data

An experimental method for the assessment of color simulation tools

Can Applications Designed to Evaluate Visual Function Be Used in Different iPads?

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