Patent ID: 8009904

Claim:
A method for mapping gray scale information to a display, the method comprising: inputting an ultrasound value of N bits; mapping the ultrasound value to color values for three color parameters of a display such that the color values for the three color parameters are not all equal and are perceived as gray by a user; outputting display values for the three color parameters of the display, the display values being a function of the color values, each display value having M bits or less, where M is less than N; repeating the inputting, mapping, and outputting for each of a plurality of spatial locations for an ultrasound image; and spatially dithering the color values across the spatial locations, the dithering of the color values altering the color values for different spatial locations by different amounts in addition to the mapping, where spatially dithering comprises altering the color values for all three color parameters by a same amount for every other one of the spatial locations and not altering for the remaining spatial locations.