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

Donyeon Kim; Yoonsik Choe

doi:10.1117/1.1599842

1 September 2003 Fast algorithm for discrete cosine transform (DCT)-domain image downsampling using Winograd DCTs

Donyeon Kim, Yoonsik Choe

Optical Engineering, Vol. 42, Issue 9, (September 2003). https://doi.org/10.1117/1.1599842

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.

©(2003) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Donyeon Kim and Yoonsik Choe "Fast algorithm for discrete cosine transform (DCT)-domain image downsampling using Winograd DCTs," Optical Engineering 42(9), (1 September 2003). https://doi.org/10.1117/1.1599842

Published: 1 September 2003

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