Fractal image coding technique is considered as very effective for a higher compression ratio. Despite this method had received much attention because of its high resolution and fast decoding and many other advantages, but it has not been used widely because it requires high computation time for the encoding process. This defect is considered as one of the drawbacks of fractal image coding technique. However, many solutions have been proposed to facilitate the encoding time and optimize the computational time and resolution. In this paper, we proposed a new technique based on a fractal dimension that represents image complexity to be used as an index for the domain blocks in order to facilitate the searching process for each range block. In comparing to the original technique, the experiment shows that the encoding time is improved with a percentage of 30%,and the compromise between image quality and image compression is achieved.
Keywords
Fractal image compression (FIC), Fractal coding, iterated function system (IFS), Fractal Dimension (FD), Differential Fractal Dimension.
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