A modified fractal transformation to improve the quality of fractal coded images
The discrete fractal transformation has recently emerged as a powerful technique for coding images. The scheme works by dividing an image into blocks and making use of a contraction mapping by which the domain blocks are mapped into range blocks. During this process it is usual to filter the domain...
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Published in | Proceedings 1998 International Conference on Image Processing. ICIP98 (Cat. No.98CB36269) Vol. 1; pp. 756 - 759 vol.1 |
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Main Authors | , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
1998
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Subjects | |
Online Access | Get full text |
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Summary: | The discrete fractal transformation has recently emerged as a powerful technique for coding images. The scheme works by dividing an image into blocks and making use of a contraction mapping by which the domain blocks are mapped into range blocks. During this process it is usual to filter the domain blocks. In this work, we show how a change in the filtering procedure can improve the image quality of fractal coding methods based on the mentioned transformation. After a presentation of the discrete fractal transformation, we explain the change and apply it to the quadtree-based fractal scheme obtaining improvements in PSNR that can reach 1 dB when compared with the results obtained by traditional filtering. |
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ISBN: | 0818688211 9780818688218 |
DOI: | 10.1109/ICIP.1998.723605 |