Study of Fractal Color Image Compression Using YUV Components

In this paper, the fractal Image Compression technique proposed by Jacquin is investigated for 24 bits/pixel color image with some improvements introduce on the IFS matching stage. One of them is using stopping search condition (ε) when monitoring the minimum matching error. This will reduce the required long fractal coding time. The other is using the domain block position index (PosI) instead of the coordinates (xd,yd), to encode the position of best matched domain block. The data of the color component (R,G,B) are transformed to (Y,U,V) components, to take the advantage of the existing spectral correlation to gain more compression. The test attained trade-off results is PSNR (33.3) dB with CR (9.72) and encoding time (128.06) sec.