一种改进的基于纹理合成的数字图像修复方法

摘要

文章介绍了纹理合成技术中的 Criminisi 算法，针对其在计算边界优先权时存在的一些不足，提出了一种改进方法，通过优化 Criminisi 算法中优先权的计算公式，可以灵活地对不同特征的图像选择不同的参数，使得其修复结果更为合理，从而扩大了可以修复的图像范围。实验结果证明，改进方法较好地克服 Criminisi 算法在计算边界优先权时存在的不足，图像修复后的视觉效果和客观评价体系均较之前有所提高。%The Criminisi algorithm in the technology of texture synthesis is introduced in the article ,as it has some deficiencies in the calculation of the boundary priorities ,an improved method is proposed ,by optimizing calculation formula of the priorities in the Criminisi algorithm ,it can flexibly choose different parameters according to the images with different characteristics ,so as to makes the repair result more reasonable ,thus expanding the scope of images which can be restored .The experimental results show that the improved method can overcome the shortages of Criminisi algorithm in the calculation of the boundary priorities ,and the vis‐ual effect of restored image and its objective evaluation system are improved than before .