Summary
|
For Full-Text PDF, please login, if you are a member of IEICE, or go to Pay Per View on menu list, if you are a nonmember of IEICE. |
|
Distributed Video Coding Using JPEG 2000 Coding Scheme Yoshihide TONOMURA Takayuki NAKACHI Tetsuro FUJII Publication IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E90-A No.3 pp.581-589 Publication Date: 2007/03/01 Online ISSN: 1745-1337 DOI: 10.1093/ietfec/e90-a.3.581 Print ISSN: 0916-8508 Type of Manuscript: Special Section PAPER (Special Section on Multimedia and Mobile Signal Processing) Category: Image Keyword: Distributed Video Coding, JPEG 2000, wavelet transform, LDPC, mobile camera, sensor network, Full Text: PDF(654.9KB)>>
Summary: 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 discrete cosine transform (DCT). Unfortunately, conventional DVC systems have low affinity with DCT. In this paper, we propose a wavelet-based DVC scheme that utilizs current JPEG 2000 standard. Accordingly, the scheme has scalability with regard to resolution and quality. In addition, we propose two methods to increase the coding gain of the new DVC scheme. One is the introduction of a Gray code, and the other method involves optimum quantization. An interesting point is that though our proposed method uses Gray code, it still achieves quality scalability. Tests confirmed that the PSNR is increased about 5 [dB] by the two methods, and the PSNR of the new scheme (with methods) is about 1.5-3 [dB] higher than that of conventional JPEG 2000. | ||||||||||
| ||||||||||
