小波变换例子--f(t)=sin(2π×500t)+sin(2π×1000t)+1.5δ(t-165)+1.5δ(t-207)的小波变换

Scaling, wavelets, image compression, and encoding NASA’s extensive image compression requirements may be met in part by the use of wavelet techniques.1 Wavelets form a large class of signal and image transforms, generally characterized by de