Saliency based color accessibility

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SALIENCY-BASED COLOR ACCESSIBILITY
ABSTRACT
Perception of color varies markedly between individuals because of
differential expression of photo pigments in retinal cones. However, it has been
difficult to quantify the individual cognitive variation in colored scene and to
predict its complex impacts on the behaviors. We developed a method for
quantifying and visualizing information loss and gain resulting from individual
differences in spectral sensitivity based on visual salience. We first modeled the
visual salience for color-deficient observers, and found that the predicted losses
and gains in local image salience derived from normal and color-blind models
were correlated with the subjective judgment of image saliency in psychophysical
experiments, i.e., saliency loss predicted reduced image preference in color-
deficient observers. Moreover, saliency-guided image manipulations sufficiently
compensated for individual differences in saliency. This visual saliency approach
allows for quantification of information extracted from complex visual scenes and
can be used as an image compensation to enhance visual accessibility by color-
deficient individuals.

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ARCHITECTURE
(a) Two observers with different color visions have distinct perceptual experiences
for the physically identical stimulus.
(b) Previous approach based on color conversion.

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Call: 0413-4205444, +91 9566355386, 99625 88976.
(c) The proposed approach based on visual salience.
EXISTING SYSTEM
In existing system perception of color varies markedly between individuals
because of differential expression of photo pigments in retinal cones.
DRAWBACK OF EXISTING SYSTEM
 It has been difficult to quantify the individual cognitive variation in colored
scene and to predict its complex impacts on the behaviors.
 It lacking one class of photo pigments are deficient in their ability to
discriminate colors

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Call: 0413-4205444, +91 9566355386, 99625 88976.
PROPOSED SYSTEM
We developed a method for quantifying and visualizing information loss and
gain resulting from individual differences in spectral sensitivity based on visual
salience.
ADVANTAGE OF PROPOSED SYSTEM
 Visual salience found that the predicted losses
 Saliency loss predicted
 Reduced image preference in color-deficient observers.
SYSTEM SPECIFICATION
Hardware Requirements
System : Pentium IV 2.4 GHz
Hard Disk : 40 GB
Floppy Drive : 1.44 Mb
Monitor : 15 VGA Colour
Mouse : Logitech
Ram : 512 Mb

LeMeniz Infotech
Call: 0413-4205444, +91 9566355386, 99625 88976.
Software Requirements
Operating system : Windows XP
Technology Used : Microsoft .NET
Backend Used : SQL Server

Saliency based color accessibility

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Saliency based color accessibility