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Efficient Schemes for Compressed-Domain Image Resizing

Do Nyeon KIM, Yoonsik CHOE, K.R. RAO

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Summary :

Fast schemes for compressed-domain image size change, are proposed. Fast Winograd DCTs are applied to resizing images by a factor of two to one. First, we speed up the DCT domain downsampling scheme which uses the bilinear interpolation. Then, we speed up other image resizing schemes which use DCT lowpass truncated approximations. The schemes proposed here reduce the computational complexities significantly, while there is no difference in the overall quality of the images compared to previous works.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E92-A No.2 pp.556-562
Publication Date
2009/02/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E92.A.556
Type of Manuscript
PAPER
Category
Image

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