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Proceedings Paper

An adaptive algorithm for removing the blocking artifacts in block-transform coded images
Author(s): Jingzhong Yang; Zheng Ma
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Paper Abstract

JPEG and MPEG compression standards adopt the macro block encoding approach, but this method can lead to annoying blocking effects-the artificial rectangular discontinuities in the decoded images. Many powerful postprocessing algorithms have been developed to remove the blocking effects. However, all but the simplest algorithms can be too complex for real-time applications, such as video decoding. We propose an adaptive and easy-to-implement algorithm that can removes the artificial discontinuities. This algorithm contains two steps, firstly, to perform a fast linear smoothing of the block edge's pixel by average value replacement strategy, the next one, by comparing the variance that is derived from the difference of the processed image with a reasonable threshold, to determine whether the first step should stop or not. Experiments have proved that this algorithm can quickly remove the artificial discontinuities without destroying the key information of the decoded images, it is robust to different images and transform strategy.

Paper Details

Date Published: 4 January 2006
PDF: 4 pages
Proc. SPIE 5985, International Conference on Space Information Technology, 59852Q (4 January 2006); doi: 10.1117/12.657731
Show Author Affiliations
Jingzhong Yang, Univ. of Electronic Science and Technology of China (China)
Zheng Ma, Univ. of Electronic Science and Technology of China (China)

Published in SPIE Proceedings Vol. 5985:
International Conference on Space Information Technology
Cheng Wang; Shan Zhong; Xiulin Hu, Editor(s)

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