A new modified fast fractal image compression algorithm

In this paper, a new fractal image compression algorithm is proposed, in which the time of the encoding process is considerably reduced. The algorithm exploits a domain pool reduction approach, along with the use of innovative predefined values for contrast scaling factor, S, instead of searching it...

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Bibliographic Details
Published in:The imaging science journal 2013-02, Vol.61 (2), p.219-231
Main Authors: Salarian, M, Nadernejad, E, Naimi, H M
Format: Article
Language:English
Subjects:
fractal coding
image compression
multi-resolution
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Summary:In this paper, a new fractal image compression algorithm is proposed, in which the time of the encoding process is considerably reduced. The algorithm exploits a domain pool reduction approach, along with the use of innovative predefined values for contrast scaling factor, S, instead of searching it across. Only the domain blocks with entropy greater than a threshold are considered to belong to the domain pool. The algorithm has been tested for some well-known images and the results have been compared with the state-of-the-art algorithms. The experiments show that our proposed algorithm has considerably lower encoding time than the other algorithms giving approximately the same quality for the encoded images.
ISSN:1368-2199
1743-131X
DOI:10.1179/1743131X11Y.0000000027