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Image Resizing on the Integer DCT Domain Used in H.264/AVC

Hyungsuk OH, Wonha KIM, Jeong Geun KIM

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Summary :

In this paper, we propose a method of resizing images in the integer DCT domain employed by H.264/AVC. To accomplish this, we first derive the matrix scaling the image resolution, and then factorize the scaled DCT blocks and the post scaling factors (PF) from the matrix obtained from the multiplication of the scaling matrix and the original integer DCT blocks. Then, we separate the scaled DCT blocks into the integer scaling matrix and the scaled integer DCT blocks. The experiments show that the proposed method produces nearly the same performance as those operating in the real DCT domain.

Publication
IEICE TRANSACTIONS on Communications Vol.E91-B No.5 pp.1599-1607
Publication Date
2008/05/01
Publicized
Online ISSN
1745-1345
DOI
10.1093/ietcom/e91-b.5.1599
Type of Manuscript
PAPER
Category
Multimedia Systems for Communications

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