Robust low bit‐rate transmission using multiple‐PBDBS (MPBDBS) approach |
| |
| Authors: | Kuo‐Liang Chung Po‐Hsuan Liao Yi‐Luen Huang Tung‐Husan Pai |
| |
| Affiliation: | 1. Department of Computer Science and Information Engineering , National Taiwan University of Science and Technology , No. 43, Section 4, Keelung Road, Taipei, 10672, Taiwan, R.O.C. Phone: 886–2–27301080 Fax: 886–2–27301080 E-mail: klchung@cs.ntust.edu.tw;2. Department of Computer Science and Information Engineering , National Taiwan University of Science and Technology , No. 43, Section 4, Keelung Road, Taipei, 10672, Taiwan, R.O.C. |
| |
| Abstract: | Abstract Recently, Gao and Tu presented an efficient algorithm for robust low bit‐rate video transmission by using a partial backward decodable bit stream (PBDBS) approach. In this paper, we first present a multiple‐PBDBS (MPBDBS) approach to improve on the previous PBDBS approach. Next a mathematical theory is provided to minimize the error propagation length in each group of blocks (GOB). Further, a novel MPBDBS‐based algorithm is presented for robust video transmission. Experimental results demonstrate that our proposed MPBDBS‐based algorithm has better image quality when compared to the previous PBDBS‐based algorithm, but has some bit‐rate and execution‐time degradation. In our experiments, both single and two‐bit error models are investigated. |
| |
| Keywords: | error propagation group of blocks macroblock partial backward decodable bit stream robust low bit‐rate video transmission |
|
|
