A Novel Coupled Bi-directional Diffused Image Inpainting Model with Morphological Invariant Property  

作　　者：WU Jiying RUAN Qiuqi AN Gaoyun 

机构地区：[1]Institute of Information Science, Beijing Jiaotong University, Beijing 100044, China

出　　处：《Chinese Journal of Electronics》2008年第4期669-674,共6页电子学报（英文版）

基　　金：This work is supported partly by the National Natural Science Foundation of China （No.60472033, No.60672062）, the National Grand Fundamental Research 973 Program of China （No.2004CB318005）, the Technological Innovation Fund of Excellent Doctorial Candidate of Beijing Jiaotong University （No.48026）.

摘　　要：In this paper, a novel coupled inpainting model which bi-directionally diffuses image information is proposed. It is morphological invariant which restores the target region based on geometric property. The image information is diffused along both the direction normal to edges and along isophotes. Total variation （TV） model is used to diffuse along the direction normal to edges which reconnects the broken lines in the target region directly. The along isophotes diffused part is the inviscid Helmholtz vorticity equation in fluid dynamics. The Helmholtz equation diffuses a smooth measure of image along isophotes, and it is morphological invariant. The novel model is comprised by 2nd order Partial differential equations （PDEs）, so the numerical scheme of it is simple and the processing time is limited. Experimental results demonstrate that the novel model smoothly restores the target region by diffusing along two orthogonal directions and preserves the linear structure which leads to its better performance than conventional inpainting models.

关 键 词：Image inpainting Morphological invariant Bi-directional diffusion Coupled model Inviscid Helmholtz vorticity equation. 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]