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Proceedings Paper

Progressive coding of stereo images using a hybrid scheme
Author(s): Torsten Palfner; Erika Mueller
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Paper Abstract

In this paper, we propose a coder based on the Discrete Multiwavelet Transform, block-based disparity estimation and interpolation. By using the Discrete Multiwavelet Transform instead of the popular Discrete Cosine Transform we avoid artifacts which appear at low bit rates in the reconstructed stereo image and which do not only affect the subjective quality of each image individually, but also the depth perception. Our existing coder consists of an adapted state-of-the-art still image coder. The correlation between the two images is exploited by disparity compensation using overlapping blocks. Since the full-search block matching algorithm is very time-consuming, an interpolation factor of two has been used by our coder so far. However, to be able to improve the disparity compensation for certain images, our coder is upgraded by increasing the interpolation factor. To prevent an immense slow-down, faster search algorithms could be implemented. These faster algorithms can reduce the search space considerably. They do not give optimal compensation results, but in conjunction with a higher interpolation factors, they still can improve the performance. The results published in this paper are competitive.

Paper Details

Date Published: 30 May 2003
PDF: 12 pages
Proc. SPIE 5006, Stereoscopic Displays and Virtual Reality Systems X, (30 May 2003); doi: 10.1117/12.474131
Show Author Affiliations
Torsten Palfner, Univ. Rostock (Germany)
Erika Mueller, Univ. Rostock (Germany)

Published in SPIE Proceedings Vol. 5006:
Stereoscopic Displays and Virtual Reality Systems X
Andrew J. Woods; Mark T. Bolas; John O. Merritt; Stephen A. Benton, Editor(s)

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