Colour bit-stealing to enhance the luminance resolution of digital displays on a single pixel basis.
A look-up table algorithm is described for enhancing the luminance resolution at the expense of the colour resolution in digital displays of colour images. For colour displays with a look-up table resolution of 8 bits/gun, the algorithm provides a luminance resolution of 11-12 bits without loss of spatial or temporal resolution. This improvement can reduce the minimum luminance step in the mid-luminance range from 1.5% to > 0.2% with no additional hardware.
Tyler
C W
CW
Smith-Kettlewell Eye Research Institute, San Francisco, CA 94115, USA. cwt@shivs.ski.org
D000465:Algorithms; D003118:Color Perception; D016288:Computer Terminals; D015350:Contrast Sensitivity; D003626:Data Display; D006801:Humans; D015588:Observer Variation; D011601:Psychophysics; D012984:Software