Title :
Rate-distortion based optimization for zerotree entropy wavelet coding
Author :
Hung-Ju Lee ; Tihao Chiang
Author_Institution :
Sarnoff Corp., Princeton, NJ, USA
Abstract :
We present a rate-distortion based optimization technique for a zerotree entropy wavelet coding scheme, namely the MPEG-4 visual texture coding (VTC) technique. With an accurate quadratic modeling of the rate distortion function, our algorithm precisely reaches target bit rate with better image quality using an efficient and fast iterative technique.
Keywords :
code standards; entropy; image texture; iterative methods; optimisation; rate distortion theory; telecommunication standards; transform coding; trees (mathematics); wavelet transforms; MPEG-4 visual texture coding; accurate quadratic modeling; bit rate; efficient iterative technique; fast iterative technique; image quality; rate distortion function; rate-distortion based optimization; zerotree entropy wavelet coding; Bit rate; Encoding; Entropy; Image coding; Image quality; MPEG 4 Standard; Quadratic programming; Quantization; Rate-distortion; Wavelet coefficients;
Conference_Titel :
Consumer Electronics, 1999. ICCE. International Conference on
Conference_Location :
Los Angeles, CA, USA
Print_ISBN :
0-7803-5123-1
DOI :
10.1109/ICCE.1999.785276
