Title :
An adaptive pattern based image coding technique using visual pattern and texture pattern
Author :
Chan, K.W. ; Chan, K.L.
Author_Institution :
Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong
Abstract :
VPIC (visual pattern image coding) and AMBTC (absolute moment block truncation coding) with LUT (look up table) are integrated to form a simple and fast system which yields images with very good visual quality while at moderately high compression rate. The VPs (visual patterns) are designed for subimages with prominent edges, while TPs (texture patterns) used in AMBTC are for high variance blocks. All patterns are 4×4 and the mapping to VPs or TPs is adaptive, based on mean square error. To further improve the visual quality, these patterns are further classified, and then trained iteratively to multi-level
Keywords :
adaptive systems; block codes; data compression; image coding; image texture; pattern recognition; table lookup; video signals; AMBTC; LUT; VPIC; absolute moment block truncation coding; adaptive pattern based image coding technique; compression rate; edges; iterative training; look up table; mean square error; multilevel; subimages; texture pattern; visual pattern; visual quality; Arithmetic; Cities and towns; Decoding; Image coding; Mean square error methods; Psychology; Quantization; Statistics; Table lookup; Visual perception;
Conference_Titel :
Speech, Image Processing and Neural Networks, 1994. Proceedings, ISSIPNN '94., 1994 International Symposium on
Print_ISBN :
0-7803-1865-X
DOI :
10.1109/SIPNN.1994.344937
