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Proceedings Paper

DCT-domain image registration techniques for compressed video
Author(s): Ming-Sui Lee; Meiyin Shen; C.-C. Jay Kuo
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Paper Abstract

An image registration technique for compressed video such as motion JPEG or the I picture of MPEG based on the matching of DCT (Discrete Cosine Transform) coefficients is investigated in this research. Several simple features such as the DC value and a couple of low-frequency AC coefficients in the DCT domain are first extracted to indicate the edge strength and orientation inside each block for the image alignment purpose. Next, we conduct a coarse-level image segmentation task to filter out irrelevant regions. Then, for the regions of interest, we perform a more detail analysis to get the edge map. Finally, the alignment parameters are determined based on the information contained by the edge map. It is shown by experimental results that the proposed method reduces the computational cost of image registration dramatically as compared with the pixel domain registration technique while achieving certain quality of composition.

Paper Details

Date Published: 25 October 2004
PDF: 12 pages
Proc. SPIE 5600, Multimedia Systems and Applications VII, (25 October 2004); doi: 10.1117/12.570813
Show Author Affiliations
Ming-Sui Lee, Univ. of Southern California (United States)
Meiyin Shen, Univ. of Southern California (United States)
C.-C. Jay Kuo, Univ. of Southern California (United States)

Published in SPIE Proceedings Vol. 5600:
Multimedia Systems and Applications VII
Chang Wen Chen; C.-C. Jay Kuo; Anthony Vetro, Editor(s)

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