Fast Fractal Image Compression Using Non Search Methodology.

Compression rates of fractal images are improved by applying the loss-less compression technique on the parameters of affine transformations of the fractal compressed image. By keeping PSNRs unchanged, proposed improved fractal image compression techniques give better compression rates. But, the compression time of proposed techniques are significantly increased than its counterparts. In order to solve the problem of long encoding time of fractal image compression, non-search fractal image compression coding is put forward. In this algorithm specific domain block is assigned as a matching block, so search is required and coding is accelerated. Besides, this algorithm adopts the method of range block adaptive decomposition and combination, and can solve problems like part of range blocks incapable of matching and low compression ratio of non-search method Experiments indicate that this algorithm is better than search fractal image compression algorithm and JPEG algorithm.