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Journal of Electronic Imaging

Low-cost and fast partial decoding of compressed videos
Author(s): Jianmin Jiang; Hui Fang; Shuyuan Yang
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Paper Abstract

We propose a fast partial decoding algorithm for content access to MPEG compressed videos, where full decompression is not necessarily required, such as compressed video browsing, content analysis, and specific pattern search. The proposed decoding bypasses the inverse DCT via an approximation process to extract average pixels directly from compressed DCT coefficients. Although such extracted pixels may incur differences compared with their fully decompressed counterparts, extensive experiments show that such partially decoded video frames preserve their content very well and achieve reasonable perceptual quality in terms of visual inspections.

Paper Details

Date Published: 1 April 2004
PDF: 7 pages
J. Electron. Imaging. 13(2) doi: 10.1117/1.1669572
Published in: Journal of Electronic Imaging Volume 13, Issue 2
Show Author Affiliations
Jianmin Jiang, Univ. of Bradford (United Kingdom)
Hui Fang, Univ. of Bradford (United Kingdom)
Shuyuan Yang, Institute of Acoustics (China)

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