Providing A Natural Solution to ColorBlindness Tudor Dumitras

Providing A Natural Solution to Color-Blindness Tudor Dumitras Girish Varatkar Nick Zamora May 09, 2002

Outline • Emulating Color-blindness – Approach and Results • Correcting Color-blindness – Approaches and Results

Emulating Color-blindness: Approach confusion point The Color-blind cannot distinguish colors which lie on the same lines radiating from confusion point

Emulating Color-blindness: Approach

Emulating Color-blindness: Results Original Protanopic Deuteranopic Red-Green Color-blind person will see only spots in test above and should be able to see 56 in the test below Tritanopic

Emulating Color-blindness: Results Original Protanopic Deuteranopic Tritanopic A person with normal color vision will see a 5, and a person with red/green Colorblindness will see a 2

Emulating Color-blindness: Results Original Protanopic Deuteranopic Above: www. vischeck. com results Below: Our results Tritanopic

Outline • Emulating Color-blindness – Approach and Results • Correcting Color-blindness – Approaches and Results

Approach #1: Discrete Histogram Equalization With Rotations: Results

Approach #1: Discrete Histogram Equalization With Rotations: Results Original Protanopic Deuteranopic Tritanopic

Approach #2: Edge Detection With Directional Filtering: Approach 1. Detect edges based on color weaknesses 2. Transform edges so that • Guarantee all edges are discernable • For example: translate red edges to blue and green edges [ 0 1 √ 2 -1 0 1 ] -√ 2 -1 0

Approach #2: Edge Detection With Directional Filtering: Results Original Protanopic Deuteranopic Tritanopic

Approach #3: Fractional V-Distortion: Approach background hidden pattern

Approach #3: Fractional V-Distortion: Results Originals Protanopic Deuteranopic

Approach #3: Fractional V-Distortion: Results Emulation Approach #3 Emulation

Approach #4: RDL – (Rotation, Dilation, and Luminance): Approach

Approach #4: RDL – (Rotation, Dilation, and Luminance): Results Original Result

Approach #4: RDL – (Rotation, Dilation, and Luminance): Results Original Result After Emulation