Video extraction for fast content access to MPEG compressed videos
Publication date
2009-06-09T08:23:04ZKeyword
Data compressionVideo coding
Discrete cosine transforms
MPEG compressed videos
Extraction schemes
Visual perception
Fast content access
MPEG compressed videos computing cost digital video discrete cosine transform fast content access histogram measurement image processing interactive multimedia pixel
Computing cost
Discrete cosine transform
Histogram measurement
Image processing
Digital video
Video processing technology
Visual perception
Visual inspection
Video extraction
Interactive multimedia
Peer-Reviewed
Yes
Metadata
Show full item recordAbstract
As existing video processing technology is primarily developed in the pixel domain yet digital video is stored in compressed format, any application of those techniques to compressed videos would require decompression. For discrete cosine transform (DCT)-based MPEG compressed videos, the computing cost of standard row-by-row and column-by-column inverse DCT (IDCT) transforms for a block of 8 8 elements requires 4096 multiplications and 4032 additions, although practical implementation only requires 1024 multiplications and 896 additions. In this paper, we propose a new algorithm to extract videos directly from MPEG compressed domain (DCT domain) without full IDCT, which is described in three extraction schemes: 1) video extraction in 2 2 blocks with four coefficients; 2) video extraction in 4 4 blocks with four DCT coefficients; and 3) video extraction in 4 4 blocks with nine DCT coefficients. The computing cost incurred only requires 8 additions and no multiplication for the first scheme, 2 multiplication and 28 additions for the second scheme, and 47 additions (no multiplication) for the third scheme. Extensive experiments were carried out, and the results reveal that: 1) the extracted video maintains competitive quality in terms of visual perception and inspection and 2) the extracted videos preserve the content well in comparison with those fully decompressed ones in terms of histogram measurement. As a result, the proposed algorithm will provide useful tools in bridging the gap between pixel domain and compressed domain to facilitate content analysis with low latency and high efficiency such as those applications in surveillance videos, interactive multimedia, and image processing.Version
No full-text available in the repositoryCitation
Jiang, J. and Wang, Y. (2004). Video extraction for fast content access to MPEG compressed videos. IEEE Transactions on Circuits and Systems for Video Technology. Vol. 14, No.5, pp. 595-605.Link to Version of Record
https://doi.org/10.1109/TCSVT.2004.826762Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1109/TCSVT.2004.826762
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