𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Multilayered protection of embedded video bitstreams over binary symmetric and packet erasure channels

✍ Scribed by Sungdae Cho; William A. Pearlman


Book ID
104038598
Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
944 KB
Volume
16
Category
Article
ISSN
1047-3203

No coin nor oath required. For personal study only.

✦ Synopsis


This paper presents a multilayered protection of embedded video bitstreams over bit errors and packet erasure channels using Error Resilient and Error Concealment 3-D SPIHT (ERC-SPIHT) algorithm, which is based on the 3-D SPIHT concepts. A robust source coder is created to give error resilience in source level of the codestream. This robustness is achieved by partitioning the wavelet coefficients into many independent sub-bitstreams while maintaining spatio-temporal tree structures. For higher protection against channel noise, we use a product code. In each packet, the concatenation of a rate compatible punctured convolutional (RCPC) code and an error detecting parity check (CRC) code is used. Across the packets, Reed-Solomon codes are used. These steps provide the robust source coder with additional layers of protection against channel noise. Finally, in the decoder side, an error concealment function is performed for the lost blocks. Simulations show that the multilayered protection of 3-D SPIHT outperforms the methods that use single layer protection in terms of average PSNRs and the PSNR ranges, and provides higher average PSNRÕs and lower PSNR variances.


📜 SIMILAR VOLUMES