New Pigment is a picture viewer for colorblind people. It aids in modifying the colors of images and pictures so that those with specific color-blindness can easily view the images. New Pigment works only with the abnormal color sensitivity (-anomaly), not the missing of color-sensitive pigment (-anopia).
How Does It Work? The Wissenschaft Behind Colorblindness...
New Pigment changes the color that a colorblind person cannot see (the defective color) by a small amount (up to 13 levels of change are possible). While it adjust this color, the defective color moves towards another color making a shift in the color sensitivity curves that the colorblind eye can see. For example, green color may shift towards red, so some of the "greenish" colors will look like "reddish" colors. The defective color may be recovered by applying slight modifications of both the brightness and the saturation of the three basic colors of each pixel of the image (Red Green and Blue), to oppose the defective color shift.