Title :
Optimal Bit Allocation for Wavelet-Based Distributed Video Coding
Author :
Tonomura, Yoshihide ; Shirai, Daisuke ; Nakachi, Takayuki ; Fujii, Tetsuro
Author_Institution :
Network Inovation Labs., Nippon Telephone & Telegraph Corp., Yokosuka
Abstract :
Distributed video coding (DVC), based on the theorems proposed by Slepian-Wolf and Wyner-Ziv, is attracting attention as a new paradigm for video compression. Some of the DVC systems use intra-frame compression based on DCT. Correspondingly, we proposed a wavelet-based DVC system that utilizes the current JPEG 2000 standard. The scheme has scalability with regard to resolution and quality. However, related works does not offer that optimal bit allocation method for each sub-band coefficients. In this report, we propose a bit allocation method for a wavelet-based DVC scheme. Tests confirm that the PSNR is increased about 1-2[dB] by propose method
Keywords :
data compression; discrete cosine transforms; discrete wavelet transforms; video coding; DCT; JPEG 2000 standard; Slepian-Wolf theorem; Wyner-Ziv theorem; bit allocation method; discrete cosine transform; distributed video coding; scalability; video compression; wavelet-based DVC system; Bit rate; Cameras; Decoding; Image coding; Robustness; Scalability; Streaming media; Transform coding; Video coding; Video compression;
Conference_Titel :
Multimedia, 2006. ISM'06. Eighth IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7695-2746-9
DOI :
10.1109/ISM.2006.120
