Discrete-cosine-transform–domain downsizing with windowing operation

Il-Hong Shin; Jung Ju Yoo; Jin Woo Hung

doi:10.1117/1.2818176

1 October 2007 Discrete-cosine-transform–domain downsizing with windowing operation

Il-Hong Shin, Jung Ju Yoo, Jin Woo Hung

Author Affiliations +

Journal of Electronic Imaging, Vol. 16, Issue 4, 040501 (October 2007). https://doi.org/10.1117/1.2818176

Abstract

A simple and effective method is presented for discrete-cosine-transform (DCT)–domain downsizing. Various methods employed in DCT-domain downsizing simply reuse the frequency component of DCT, which shows a severe aliasing effect. The proposed approach extends the downsizing method for alleviating or reducing the aliasing effect with a windowing operation, which adjusts the magnitude of the DCT coefficient. Visual inspection showed satisfactory results, with no complexity overhead and performance degradation regarding the peak-signal-to noise ratio (PSNR) after upsampling.

©(2007) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Il-Hong Shin, Jung Ju Yoo, and Jin Woo Hung "Discrete-cosine-transform–domain downsizing with windowing operation," Journal of Electronic Imaging 16(4), 040501 (1 October 2007). https://doi.org/10.1117/1.2818176

Published: 1 October 2007

ACCESS THE FULL ARTICLE

JOURNAL ARTICLE
3 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY