The frequency domain plays an important role in image processing to smooth, enhance, and detect edges of images. Although image data typically does not include imaginary values, the fast Fourier transform (FFT) has been used for obtaining spect

基于fht的匹配追踪算法，算法速度要比fft快很多，提高了一个数量级-Fht based matching pursuit algorithm, the algorithm much faster speed than fft, an order of magnitude increase

提出新的FFT或FHT的一种改进的整序算法-The new FFT or FHT proposed an improved algorithm for the entire sequence

这是fft和fht的示例程序，经测试，可以使用，欢迎下载(Hi, this is an example for fft and fht. It works perfectly just like the result in matlab.)