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Proceedings Paper

Efficient shape coding algorithm by quadtree decomposition for MPEG-4
Author(s): Chil-Cheang Ma; Mei-Juan Chen
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Paper Abstract

Due to rapid growth of video coding techniques, the object- oriented video compression is an important role in recent years. MPEG-4 visual is the first international standard allowing to transmit arbitrarily shaped video object. In this paper, we propose a new shape coding algorithm called quadtree-based binary shape coding (QTSC) algorithm. The proposed method is based on the simple characteristic of the quadtree decomposition to improve coding efficiency. Quadtree (QT) decomposition has been used as a part of image sequence compression algorithms. It is a simple technique used to obtain an image representation at different resolution levels. An improved quadtree shape coding (IQTSC) algorithm to further increase coding performance is also presented. We compare the proposed method with the bitmap-based and contour-based methods for MPEG-4. Simulation results show that the coding performance of the improved scheme is better than conventional shape coding methods. The proposed methods are shown to be simple, and efficient solutions and suitable for hardware implementation.

Paper Details

Date Published: 19 April 2000
PDF: 11 pages
Proc. SPIE 3974, Image and Video Communications and Processing 2000, (19 April 2000); doi: 10.1117/12.383007
Show Author Affiliations
Chil-Cheang Ma, National Dong-Hwa Univ. (Taiwan)
Mei-Juan Chen, National Dong-Hwa Univ. (Taiwan)


Published in SPIE Proceedings Vol. 3974:
Image and Video Communications and Processing 2000
Bhaskaran Vasudev; T. Russell Hsing; Andrew G. Tescher; Robert L. Stevenson, Editor(s)

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