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Image Inpainting Algorithm with Adaptive Patch Using SSIM

He Kai;Niu Junhui;Shen Chengnan;Lu Wenxia;School of Electrical and Information engineering,Tianjin University;  
The current exemplar-based algorithms lack adaptability due to manually determining the size of block.In addition,using a patch with the constant size is not suitable to obtain the optimal effect in different structure and texture regions.To address this problem,this paper puts forward an adaptive patch size selection method using improved structure similarity(SSIM).The gradient information is added to the traditional SSIM and is combined with the brightness,contrast ratio,and structure of patch to measure the structural difference.On this basis,the optimal size of patch in different structure or texture regions is determined,thus improving the adaptability,as well as the inpainting effect.The simulation results demonstrate the effectiveness of the proposed method even when complex structure or texture exists.
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