中文说明：曲波变换是在小波和瘠薄变换变换的基础上发展起来的，对于图像边缘刻画更准确，比小波多一个方向性。
English Description：
Curvelet transform is developed on the basis of wavelet transform and barren transform. It is more accurate for image edge description and has more directivity than wavelet transform.