中文说明：使用curvelet变换对一幅图像变换，显示其系数图，再选取阈值进行重构，显示重构的图像。
English Description：
Curvelet transform is used to transform an image and display its coefficient map. Then threshold is selected to reconstruct and display the reconstructed image.
Curvelet transform to transform an image
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中文说明：使用curvelet变换对一幅图像变换，显示其系数图，再选取阈值进行重构，显示重构的图像。
English Description：
Curvelet transform is used to transform an image and display its coefficient map. Then threshold is selected to reconstruct and display the reconstructed image.