2D快速小波变换，支持多种过滤器，包括：Daubechies, Coiflets, Biorthogonal小波。压缩使用的小波是Bior53 and Bior97，能实现快速的动态影像缩放。-2D Fast Wavelet Transform, supports a wide range of filters, including: Daubechies, Coiflets, Biorthogonal wavelet. The use of wavelet compression is Bior53 and Bior97, to achieve fast dynamic image scaling.