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Optical Engineering

Discrete cosine transform-analysis-based deblocking algorithm for block-transform compressed images
Author(s): Jin Wang; Jechang Jeong; Gwanggil Jeon
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Paper Abstract

We propose a discrete cosine transform (DCT) analysis-based adaptive deblocking algorithm to reduce the block discontinuities. First we analyze the properties of the one-dimensional DCT coefficients. Based on this analysis, we utilize two adjacent vectors to classify the vector-containing block boundary into three models. For each model, we apply different filters according to the local properties. Comprehensive experiments indicate that the proposed method outperforms a large number of deblocking methods in the literature in terms of the evaluation of peak signal-to-noise ratio, perceptual quality, and computational complexity.

Paper Details

Date Published: 11 June 2012
PDF: 8 pages
Opt. Eng. 51(6) 067011 doi: 10.1117/1.OE.51.6.067011
Published in: Optical Engineering Volume 51, Issue 6
Show Author Affiliations
Jin Wang, Hanyang Univ. (Korea, Republic of)
Jechang Jeong, Hanyang Univ. (Korea, Republic of)
Gwanggil Jeon, Univ. of Incheon (Korea, Republic of)


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