关键词: 图像修复, 纹理合成, 优先权函数, 相似度函数

Abstract: In order to solve the problems that the priority function of Criminisi algorithm is unreliable, the matching block traversal search spends a lot of time and when selecting matching block the similarity function is inaccurate, this paper presents an improved Criminisi image restoration algorithm. The algorithm improves the priority formula, introduces variance difference term to enhance the distinguish ability on image structure section. When searching for a matching block area, it introduces a parameter, it can shorten the seeking time of matching block effectively. And a new similarity function of repaired block and matching block is defined. The experimental results show that compared with the original algorithm, this improved Criminisi algorithm is more reliable and effective in image restoration.

Key words: image inpainting, texture synthesis, priority function, similarity function