An isolated image inpainting approach based on the Poisson equation
Houqiang Li · Journal of Circuits and Systems · 2008
Image inpainting is a technique used to recover damaged portions of an image and has a variety of applications.The exemplar based inpainting algorithm has a good performance on texture inpainting, but it may produce block effects and lead to artificial inpainting results when processing structure images.In this paper, we propose an isolated inpainting algorithm based on the Poisson equation.First the image to be repaired is decomposed into two components:the structure and texture images;then the two components are repaired separately by different methods according to their image characteristics;finally, the repaired components are combined back.For the structure image, the Laplacian operator is employed to enhance the structure information, and the Laplacian field is inpainted by the exemplar based algorithm, followed by a reconstruction based on the Poisson equation.In this way, the repaired structure image maintains both sharp edges and smooth interiors.Experiments show the proposed algorithm can improve the visual effect significantly and it has a good performance on large area inpainting.