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Image inpainting algorithm based on non-subsampled contourlet transform
ZOU Weigang, ZHOU Zhihui, WANG Yang
Journal of Computer Applications    2017, 37 (2): 553-558.   DOI: 10.11772/j.issn.1001-9081.2017.02.0553
Abstract571)      PDF (1059KB)(526)       Save
The multi-scale analysis technology has been widely used in the field of digital image processing, the inpainting image with large damaged area has become a hot and difficult spot of image inpainting. Based on the principle of multi-resolution analysis and the traditional method of image inpainting, a new algorithm for image inpainting based on non-subsampled contourlet transform was proposed. Firstly, the image was decomposed into low frequency and high frequency parts by using the non-subsampled contourlet transform, then the parts of different frequency after image decomposition were inpainted respectively. The low frequency components of the image were inpainted by the improved method of texture synthesis. Because after non-subsampled contourlet transform, the information of the corresponding position between the low frequency component and the high frequency component is consistent, the information of corresponding position of other high frequency components could be repaired while the low frequency component was repaired. Finally, the inpainting of the texture image was completed by reconstruction process of non-subsampled contourlet transform. Generally, the selection of image inpainting parameters was appropriate for the best image effect, thus a counter-example was given for authentication. The structural similarity measure among the proposed algorithm and the classical Criminisi algorithm and the wavelet inpainting algorithm has little difference, but the Peak Signal-To-Noise Ratio (PSNR) measurement has different result according to the different texture characteristics of images and the different location characteristics of damaged areas. The simulation results show that the proposed method is very good for the promotion of the non-subsampled Contourlet transform in image inpainting application, and it can get better repair effect while inpainting the image with large damaged area.
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