Combined Error Concealment and Error Correction in Rate-Distortion Analysis for Multiple Substream Transmissions

• Published in: IEEE transactions on image processing 2007-04, Vol.16 (4), p.1022-1035
• Main Authors: FU, Chih-Ming, HWANG, Wen-Liang, HUANG, Chung-Lin
• Format: Article
• Language: English
• Subjects: Algorithms; Applied sciences; Bandwidth; Channels; Coding, codes; Computer Communication Networks; Computer simulation; Data Compression - methods; Decoding; Encoders; Error analysis; Error concealment; Error correction; Error correction codes; Exact sciences and technology; Forward error correction; Image Enhancement - methods; Image Interpretation, Computer-Assisted - methods; Image processing; Information, signal and communications theory; Optimization; Propagation losses; PSNR; Rate-distortion; rate-distortion analysis; Reproducibility of Results; Sensitivity and Specificity; Signal and communications theory; Signal processing; Signal Processing, Computer-Assisted; Signal to noise ratio; Streaming media; Telecommunications and information theory; unequal error protection (UEP); Video Recording - methods
• ISSN: 1057-7149; 1941-0042
• DOI: 10.1109/TIP.2006.891330

We propose a new framework for multiple scalable bitstream video communications over lossy channels. The major feature of the framework is that the encoder estimates the effects of postprocessing concealment and includes those effects in the rate-distortion analysis. Based on the framework, we develop a rate-distortion optimization algorithm to generate multiple scalable bitstreams. The algorithm maximizes the expected peak signal-to-noise ratio by optimally assigning forward error control codes and transmission schemes in a constrained bandwidth. The framework is a general approach motivated by previous methods that perform concealment in the decoder, as in our special case. Simulations show that the proposed approach can be implemented efficiently and that it outperforms previous methods by more than 2 dB