Enlargement and reduction of image/video via discrete cosine transform pair, part 2: reduction

Shu-Mei Guo; Chen-Bang Li; Chia-Wei Chen; Yueh-Ching Liao; Jason Sheng-Hong Tsai

doi:10.1117/1.2804712

1 October 2007 Enlargement and reduction of image/video via discrete cosine transform pair, part 2: reduction

Shu-Mei Guo, Chen-Bang Li, Chia-Wei Chen, Yueh-Ching Liao, Jason Sheng-Hong Tsai

Author Affiliations +

Journal of Electronic Imaging, Vol. 16, Issue 4, 043007 (October 2007). https://doi.org/10.1117/1.2804712

Abstract

Based on the novel matrix representations of the forward three-dimensional (3-D) discrete cosine transform (DCT) and the inverse 3-D DCT, applications for reduction of sequence/image/video are proposed. The original sequence/image/video is divided into subunits, and then the reduction is implemented in the frequency-domain by DCT. Two efficient algorithms are presented in accordance with two kinds of reducing multiples, 1/s and o₁/o₂, respectively. The proposed algorithms significantly eliminate ripple and blocky effects. As a result, they can provide numerous applications in data compression as well. Simulation results show that proposed mechanisms enable good performances for reductions of sequences, images, and videos as expected.

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

Citation Download Citation

Shu-Mei Guo, Chen-Bang Li, Chia-Wei Chen, Yueh-Ching Liao, and Jason Sheng-Hong Tsai "Enlargement and reduction of image/video via discrete cosine transform pair, part 2: reduction," Journal of Electronic Imaging 16(4), 043007 (1 October 2007). https://doi.org/10.1117/1.2804712

Published: 1 October 2007

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available