FRACTAL-BASED METHOD FOR COLOR IMAGE COMPRESSION

A fractal-based method for color image compression is presented The me thod transforms the direct color components into three approximate pri ncipal components and applies a fractal-based compression method devel oped for gray-scale images to each new component. The main principal c omponent, which contains a large amount of energy, is coded with high accuracy, while the other two components can be coded at lower accurac y and a very high compression ratio. The principal-component-based met hod gives an overall higher quality in the reconstructed image at a si milar compression rate compared with compression based on other linear transforms of the color space.