Title :
Scalable image coder mixing DCT and triangular meshes
Author :
Demaret, Laurent ; Robert, Guillaume ; Laurent, Nathalie ; Buisson, Alexandre
Author_Institution :
France Telecom R&D, Cesson-Sevigne, France
Abstract :
A new very low bit rate scalable encoding principle is presented. It is based on hierarchical triangular mesh encoding combined with triangle based DCT coding. Affine or DCT approximation is selected according to best rate distortion trade-off. In this way our coder demonstrates advantages at very low bit rates avoiding the traditional block or ringing artefacts of current DCT or wavelet based coders
Keywords :
approximation theory; data compression; discrete cosine transforms; image representation; rate distortion theory; transform coding; video coding; DCT approximation; DCT based coder; affine approximation; hierarchical triangular mesh encoding; rate distortion trade-off; scalable image coder; scalable image representation; scalable wavelet encoding; triangle based DCT coding; very low bit rate scalable encoding; video compression; wavelet based coder; Bit rate; Decoding; Decorrelation; Discrete cosine transforms; Encoding; Image coding; Research and development; Scalability; Telecommunications; Video compression;
Conference_Titel :
Image Processing, 2000. Proceedings. 2000 International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-6297-7
DOI :
10.1109/ICIP.2000.899589
