The fast wavelet transforms algorithm based on FFT and the Atrous algorithm has high computational efficiency, is easy to be realized with hardware and to extract features, and the size of the wavelet coefficient matrix is the same to that of the original image.
基于FFT和多孔算法的小波快速变换算法,具有计算效率高、易于硬件实现,并且计算后的小波系数矩阵大小和原图像一样,易于提取特征。
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