title: Combined error concealment and error correction in rate-distortion analysis for multiple substream transmissions.
abstract: 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.
authors.affiliation: Department of Electrical Engineering, National Tsing-Hua University, Hsinchu, Taiwan, ROC. chihming.fu@gmail
authors.forename: Chih-Ming
authors.initials: CM
authors.lastname: Fu
authors.forename: Wen-Liang
authors.initials: WL
authors.lastname: Hwang
authors.forename: Chung-Lin
authors.initials: CL
authors.lastname: Huang
mesh_terms: D000465:Algorithms; D016477:Artifacts; D003195:Computer Communication Networks; D044962:Data Compression / Q000379:methods*; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D014741:Video Recording / Q000379:methods*