Title :
Compression of color-mapped images
Author :
Hadenfeldt, A.C. ; Sayood, K.
Author_Institution :
Univ. of Nebraska Med. Center, Omaha, NE, USA
Abstract :
It is shown that the use of sorted colormaps makes color-mapped images amenable to both lossless and lossy compression. For lossy compression conventional wisdom dictates the use of DCT (discrete cosine transform) coding for most types of images. However, for color-mapped images DPCM (differential pulse code modulation) coding might be more advantageous
Keywords :
data compression; differential pulse code modulation; discrete cosine transforms; image coding; sorting; DCT; DPCM; color-mapped images; differential pulse code modulation; discrete cosine transform; lossy compression; sorted colormaps; Cathode ray tubes; Color; Computer displays; Entropy; Image coding; Image storage; NASA; Pixel; Sorting; Testing;
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
DOI :
10.1109/ICC.1993.397322
