Fast algorithm for discrete cosine transform (DCT)-domain image downsampling using Winograd DCTs

被引：1
|
作者：
Kim, D [1 ]
Choe, Y [1 ]
机构：
[1] Yonsei Univ, Dept Elect & Elect Engn, Image & Informat Proc Lab, Seoul 120749, South Korea
来源：
OPTICAL ENGINEERING | 2003年 / 42卷 / 09期
关键词：
image processing; image compression; compressed domain processing; discrete cosine transform; downsampling;
D O I：
10.1117/1.1599842
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A fast algorithm for discrete cosine transform (DCT)-domain image resizing is presented. To reduce computations, fast Winograd DCTs are applied to a recently reported image resizing scheme that uses DCT low-pass truncated approximation. Our fast algorithm yields significant improvement in computational complexity over the fast algorithm of the reported method. (C) 2003 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页码：2485 / 2486
页数：2
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