IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Regular Section
Efficient Schemes for Compressed-Domain Image Resizing
Do Nyeon KIMYoonsik CHOEK.R. RAO
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2009 Volume E92.A Issue 2 Pages 556-562

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Abstract

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.

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© 2009 The Institute of Electronics, Information and Communication Engineers
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