Video extraction for fast content access to MPEG compressed videos
Jiang, Jianmin Weng, Y.
Jiang, Jianmin
Weng, Y.
Publication Date
2009-06-09T08:23:04Z
End of Embargo
Supervisor
Keywords
Data compression, Video 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
Rights
Peer-Reviewed
Yes
Open Access status
Accepted for publication
Institution
Department
Awarded
Embargo end date
Additional title
Abstract
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 repository
Citation
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 publisher’s version
Link to published version
Link to Version of Record
Type
Article