Patent ID: 6738509
Filing Date: 2004-05-18
Classification: G06T,H04N

Abstract:
A computer-implemented method for compressing a digital multi-spectral image represented by a first color space, the method comprising the steps of:a) dividing a first set of first color space components into first and second paths; b-1) transforming the first set of first color space components on the first path into a plurality of second color space components using a first bounded-loss color space transformation; b-2) compressing the second color space components and dividing the compressed second color space components into two paths; b-3) inputting one path of the compressed second color space components into an output function; b-4) reconstructing the compressed second color space components on the other path; b-5) transforming the reconstructed second color space components into a second set of first color space components using a second bounded-loss color space transformation; c) generating color space 1 difference data from the first set of first color space components on the second path and the reconstructed set of first color space components; d) compressing the generated difference data; and e) inputting the compressed difference data into the output function.