Color and Human Perception Homework Exercise

1. Imagine that you are able to obtain a super huge, high resolution display that measured 10'x10' and used a frame buffer of 8192 by 8192 pixels. Since the frame buffer is so large, a color lookup table is used to limit the size of memory needed. Each pixel coordinate of the frame buffer is given 8 bits to index into a table with 256 possible 24 bit colors. (Total memory = 64 MBytes + 768 Bytes.) Imagine that, in addition to this amazing feat of engineering, you had an eye-tracking device the could precisely determine where a viewer a few feet from the screen was looking at any point in time. Finally, imagine that every time the viewer changed where she was looking on the screen, the application she was using could generate a new image to display to the screen. How might the application exploit an understanding of how the eye works to provide an image to the one viewer that appears to have many more different colors than the 256 possible?