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中文摘要：
小波-Contourlet变换能够良好捕获图像的方向特征和边缘信息。利用小波-Contourlet变换良好的多尺度性和多方向性特征,提出一种基于小波-Contourlet变换的图像增强算法,用非线性增强算子对变换的各子带系数做增强处理。并引入了循环平移消除由于小波-Contourlet变换缺乏平移不变性而产生的图像失真。实验结果表明,该方法有效增强了图像的边缘细节和纹理特征。
英文摘要：
A new algorithm ofimage enhancement using wavelet based contourlet transforrn is proposed. Wavelet based contourlet transform is applied for its good property of capturing image＇s edges and texture, A non-linear operator is used to enhance the coefficients of the transform. Because the transform is not shift-invariant, cycle spinning is employed to restrain the distortion near the image edges. The experiments show that the algorithm proposed gets good results and enhances the image＇s details and texture.
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