Title :
Dual frame video encoding with feedback
Author :
Leontaris, Athanasios ; Cosman, Pamela C.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
Abstract :
A special case of multiple frame prediction is the dual frame buffer, where an encoder uses both an immediate past frame and a long term past frame for motion compensation. Using a dual frame buffer together with intra/inter mode switching improves the compression performance of the coder. In this work, we investigate the effect of feedback in making better mode-switching decisions in the context of rate-distortion optimization. Feedback information is used to limit drift errors due to packet losses by synchronizing the long-term frame buffers of the encoder and decoder, and refining the input to the mode-switching decision mechanism. Experimental results show an improvement in PSNR of up to 1.6 dB.
Keywords :
motion compensation; optimisation; packet switching; rate distortion theory; video coding; PSNR; coder; dual frame video encoding; feedback information; immediate past frame; intra-inter mode switching; long term past frame buffer; motion compensation; multiple frame prediction; packet loss; rate-distortion optimization; Decoding; Encoding; Feedback; IP networks; Motion compensation; PSNR; Rate-distortion; Robustness; Spine; Switches;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on
Print_ISBN :
0-7803-8104-1
DOI :
10.1109/ACSSC.2003.1292238