基于小波对比度的图像增强算法

A Algorithm for Image Enhancement Based on Wavelet Constrat

根据人眼视觉对局部对比度敏感的视觉特性,提出一种基于小波对比度的图像增强算法。首先,对图像进行小波变换,同时得到小波对比度;然后,根据小波对比度,采用非线性运算对小波系数进行调整以增强图像细节。最后,进行小波逆变换得到增强图像。实验结果表明,算法有效地突出图像细节,改善图像质量。

In accordance with the visual property that human eyes are sensitive to local contrast, a method for image enhancement based on wavelet contrast was proposed. First, the original image was decomposed into wavelet, at the same time, the wavelet contrast was obtained. Then, according to wavelet contrast, wavelet coefficients were changed with nonlinear operator to enhance the details of images. Finally, the image of enhancement was obtained via the inverse wavelet transform. The experimental result demonstrated that this method extruded image details, and improved the quality of image.