Image inpainting method based on discrete wavelet transformation
基于离散小波变换的图像修补方法*

According to the multi-resolution analysis rule,the proposed method dealt with image inpainting via the discrete wavelet transformation(DWT).The damaged image was decomposed using the DWT at first,and then inpainted sub-frequen- cy bands separately.The method of blending curvature-driven and median filter used in our previous works was adopted to in- paint the low frequency information.Since the high frequency contains the direction information of the edges in the image,the image was first divided into many small blocks,the line fitting was used to approximate the direction of the edges to each block,and then the values of the damaged pixels in the block were approximated according to this direction.The results of the experiments show that the proposed method works well in the inpainting of the damaged image.