Patent ID: 8744198
Filing Date: 2014-06-03
Classification: G06T

Abstract:
1. A computer-implemented method comprising: dividing, in a processor, an image into one or more image channels representative of one or more display characteristics for image compression; dividing at least one of the image channels into at least one block, wherein the at least one block includes floating point representations of pixel values included in the block, the floating point representations having a fixed number of binary digits and including representations of negative values; converting the floating point representations of pixel values into unsigned integer representations having a fixed range of values such that the sign corresponding to each floating point representation is preserved, respective values of the unsigned integer representations monotonically tracking the floating point values of the floating point representations, and the fixed range of values of the unsigned integer representations is based upon the fixed number of binary digits of the floating point representations; and storing the difference of adjacent unsigned integer representations as a compressed version of the image.