Abstract: Fractal Image Compression (FIC) is a lossy compression technique, where we can obtain a large amount of compression by representing the image as a contractive transform. The main drawback of FIC is its complexity in encoding and lack of speed. At the same time it has several advantages such as, zooming the image without degrading the quality due to its resolution independent nature. FIC have a good trade off between the compression ratio and PSNR when comparing with other standard image compression techniques. In order to improve the performance of the fractal image compression several methods are adopted. This paper is a study of various fractal image compression methods.
Keywords: Fractal encoding, Image compression, PSNR, Compression ratio, Discrete Cosine Transform, Discrete Wavelet Transform.