Manipulation and Compositing of MC-DCT Compressed Video  Manuscript received September 19, 1993; revised June 19, 1994. This paper was presented in part at IEEE ICASSP, Minneapolis, MN, 1993.IEEE Log Number 9406079.

Reduced images formed from the collection of DC coefficients in intra-coded DCT compressed video retain "global" feature useful for processing purposes. This paper examines the direct reconstruction of such DC images from motioncompensated P-frames and B-frames of MPEG compressed video. Exact expressions are derived and approximations are given for computational speedup. Analysis and experimental results show that the approximations yield images very close to the true ones. D Current BlockMotion Vector = (Ax. A y) = ( w l . h l )

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Manipulation and Compositing of MC-DCT Compressed Video Manuscript received September 19, 1993; revised June 19, 1994. This paper was presented in part at IEEE ICASSP, Minneapolis, MN, 1993.IEEE Log Number 9406079.

Cited by 8 publications

References 28 publications

A fast DCT domain inverse motion compensation algorithm based on shared information in a macroblock

A fast DCT domain inverse motion compensation algorithm based on shared information in a macroblock

Performance characterization and comparison of video indexing algorithms

On the extraction of DC sequence from MPEG compressed video

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