基于小波非线性外推的图像增强方法

An Image Enhancement Method Based on Wavelet and Nonlinear Extrapolation

针对图像增强的问题,提出了一种新的图像增强方法．该方法将小波变换与频域非线性外推算法相结合,首先利用小波变换提升图像的高频成分,再利用频域非线性外推算法增加图像的高频分量,最终实现图像的增强．实验表明,该新方法有效地提高了图像的视觉效果．

In view of the problem of image enhancement, a new image enhancement method is proposed. This method combines the wavelet transform with the nonlinear extrapolation in frequency domain. It firstly utilizes the wavelet transform to enhance the high frequency components of an original image and then utilizes the nonlinear extrapolation in frequency domain to increase the high frequency components of the image; finally, the original image is enhanced. The experimental results have shown that this new method can improve the visual quality of images effectively.