Title :
Analysis of Motion-complexity and Robustness for Video Transmission
Author :
Ishwar, Prakash ; Puri, R. ; Majumdar, Angshul
Author_Institution :
Dept. of ECE, Boston Univ., MA
Abstract :
In this work, we study the problem of end-to-end video transmission over a noisy communication link, and analytically characterize the complexity (of motion search) and robustness metrics for this problem. The presence of channel noise results in an uncertainty at the encoder as to the information available at the decoder, naturally invoking the framework of source coding with side information (distributed source coding) used in our analysis. We address three important aspects. First, we quantify the theoretical performance gains attained with side-information based codecs over prediction-based coders like MPEG under a lossy transmission scenario when there is drift. Secondly, we show that by accurate DFD (displaced frame difference) modeling we can closely approach MPEG´s compression performance using side-information video coding principles without resorting to long block-length channel codes. Thirdly, we quantify analytically that the value of accurately estimating DFD statistics diminishes, as the channel gets noisier
Keywords :
image motion analysis; source coding; telecommunication channels; video codecs; video coding; video communication; channel noise; displaced frame difference modeling; distributed source coding; motion-complexity; prediction-based coders; side-information based codecs; side-information video coding; video transmission; Codecs; Decoding; Design for disassembly; Information analysis; Motion analysis; Noise robustness; Performance gain; Source coding; Transform coding; Uncertainty;
Conference_Titel :
Wireless Networks, Communications and Mobile Computing, 2005 International Conference on
Conference_Location :
Maui, HI
Print_ISBN :
0-7803-9305-8
DOI :
10.1109/WIRLES.2005.1549593