非下采样contourlet是超小波的一种。具有多尺度和多方向性，解决了contourlet变换无平移不变性的缺陷。用于图纹理特征提取和图像融合的效果很好。(Non sampled contourlet is a kind of super wavelet. With multi-scale and multi directional, it solves the defect of Contourlet translation without translation invariance. F