View : 197 Download: 0

Discrete cosine transform domain image resizing using correlation of discrete cosine transform coefficients

Title
Discrete cosine transform domain image resizing using correlation of discrete cosine transform coefficients
Authors
Cho M.-K.Lee B.-U.
Ewha Authors
이병욱
SCOPUS Author ID
이병욱scopus
Issue Date
2006
Journal Title
Journal of Electronic Imaging
ISSN
1017-9909JCR Link
Citation
vol. 15, no. 3
Indexed
SCIE; SCOPUS WOS scopus
Abstract
With the wide use of digital multimedia equipment, exchange of image data has become prevalent. Images and video data are exchanged through personal computers, mobile phones, and personal digital assistants (PDAs). Since the resolutions of each image display are different, it is necessary to change the image size accordingly. An image-resizing algorithm in the discrete cosine transform (DCT) domain is known to be fast for a compressed image. Most of the DCT domain methods truncate the high-frequency components during image downsampling and they are assumed to be zero to upsample images. We estimate the high-frequency parts using the correlation between the low- and the high-frequency components, and compare the peak SNR (PSNR) performances. We verify that the use of correlation is the best linear estimation in the mean square error sense. © 2006 SPIE and IS&T.
DOI
10.1117/1.2234736
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE