Application And Research Of Wavelet And Fracatl In Image Compression

Image compression is very important, wavelet analysis and fractal technology have drawn many students' attention in the field of data compression because of many advantages. The two technologies develop fast, and have been applied in many fields, for example the field of communication, the field of enjoy and the field of computer.First, in this paper, we introduced the theory, method and the international standard about image compression.Second, in this paper, we also research the arithmetic of wavelet and fractal, at last give a method to synthesize the two technologies. Through experiments testify this method is feasible.Choice of filter in wavelet image compression is a critical factor which affects image compression quality. People often think about the filter's characters of orthogonal, symmetry, regularity, but seldom synthetically think about some factors such as image texture or compression rate. In this paper used the same adaptive arithmetic coder for many filters, analyzed the effect factors synthetically for the best wavelet compression, and give some methods for selecting filter.At last in this paper, we apply wavelet analysis in medicine. Through compressing the image of X ray and the CT show wavelet is a very good technology which can compress medicine-image in high ratio but not affect the analysis of pathology. This method were accept by expert of the Third Hospital in Heibei...