DocumentCode
1617744
Title
Joint spatial frequency quantization of zerotree wavelet video coding
Author
Wu, Z.Y. ; Wong, W.C.
Author_Institution
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Volume
2
fYear
1999
Firstpage
288
Abstract
This paper proposes joint spatial-frequency quantization for a zerotree wavelet video encoder. Following temporal redundancy reduction via block motion estimation, the displaced frame difference signal is discrete wavelet transformed, zerotree encoded and optimally quantized. Improved performance is obtained compared to H.263 and systems nor employing joint quantization, while at the same time preserving spatial and frequency scalability.
Keywords
discrete wavelet transforms; vector quantisation; video coding; block motion estimation; displaced frame difference signal; frequency scalability; joint spatial frequency quantization; spatial scalability; temporal redundancy reduction; zerotree wavelet video coding; zerotree wavelet video encoder; Bit rate; Design for disassembly; Discrete cosine transforms; Discrete wavelet transforms; Frequency; MPEG 4 Standard; Quantization; Scalability; Video coding; Wavelet coefficients;
fLanguage
English
Publisher
ieee
Conference_Titel
Image Processing, 1999. ICIP 99. Proceedings. 1999 International Conference on
Conference_Location
Kobe
Print_ISBN
0-7803-5467-2
Type
conf
DOI
10.1109/ICIP.1999.822902
Filename
822902
Link To Document