A Hybrid Quadtree Fractal Image Coding
Hongwei Chen, Zhang Huan-chun · Modern Electronics Technique · 2006
In order to overcome the shortcoming,it is difficult to find the most similar domain block for texture abundance range block in the quadtree fractal coding,a hybrid image coding method based on the quadtree fractal is proposed in the paper.In the paper,the quadtree fractal coding and Block Truncation Coding(BTC) are discussed.The strongpoints of two methods are synthetized,for the 4×4 range blocks whose similar domain block are not satisfied,the BTC method is used.Standard images have been used to carry out the simulation with the quadtree coding method and the method proposed by the paper.The experiment results show that the method of the paper is more effective to improve Mean Square Error(MSE) or Peak Signal to Noise Ratio(PSNR) of reconstructed image.