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

2. Outline Emulating Color-blindness –Approach and Results Correcting Color-blindness –Approaches and Results

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

4. Emulating Color-blindness: Approach

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

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

7. Above: www.vischeck.com resultswww.vischeck.com Below: Our results

8. Outline Emulating Color-blindness –Approach and Results Correcting Color-blindness –Approaches and Results

9. Approach #1: Discrete Histogram Equalization With Rotations: Results

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

11. 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 Approach #2: Edge Detection With Directional Filtering: Approach [ ] 0 -1 -√2 1 0 -1 √2 1 0

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

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

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

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

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

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

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