Title :
Motion vector recovery using optical flow
Author :
Jae-Won Suh ; Yo-Sung Ho
Author_Institution :
Kwangju Inst. of Sci. & Technol., South Korea
Abstract :
A compressed bitstream generated by an MPEG-2 video coder is sensitive to channel errors. Due to the coding structure of the MPEG-2 video compression algorithm, a bit error can affect not only the current picture frame but also succeeding frames. In this paper, we propose a temporal error concealment algorithm to recover lost or erroneously received motion vectors. In order to estimate the motion vector of the erroneous macroblock at the decoder we use the average value of optical flow vectors of neighboring luminance intensity values.
Keywords :
decoding; error correction; image reconstruction; image sequences; motion estimation; video signal processing; MPEG-2 video coder; MPEG-2 video compression; bit error; channel errors; compressed bitstream; erroneous macroblock; motion vector recovery; neighboring luminance intensity values; optical flow; picture frame; temporal error concealment algorithm; Forward error correction; Image motion analysis; Image reconstruction; Interleaved codes; Motion estimation; Optical receivers; Optical sensors; Transform coding; Video compression; Video sequences;
Conference_Titel :
Consumer Electronics, 2000. ICCE. 2000 Digest of Technical Papers. International Conference on
Conference_Location :
Los Angles, CA, USA
Print_ISBN :
0-7803-6301-9
DOI :
10.1109/ICCE.2000.854600
