Several Three Stage Lifting Scheme in Wavelet Transforms and Image Compression
几种三层小波提升方案及其在图像压缩中的应用

Wavelet transforms via lifting scheme are called the second-generation wavelet transforms. However, the coefficients of lifting schemes are transformed using mathematical method from the first-generation wavelets, in most design results the lifting filters are not only hard to get and also fixed. In this paper, Several three stage lifting schemes are achieved and designed. All lifting filters are designed in spatial domain and proper mathematical methods are selected. Our designed coefficients are flexible and can be adjusted according to different data. We give the mathematical design details in this paper. Finally, all designed models of lifting are used in image compression and satisfactory results are achieved.