关键词: 图像修复, 梯度计算, 预编辑, 更新填充前端, 计算效率

Abstract: There exits the discontinuous edge and low efficiency problem when the image inpainting algorithm is used to deal with the stained license plate image, a new improved algorithm based on the combination of texture blocks and gradient feature for image inpainting is proposed. The new algorithm is improved with two main aspects. Aiming at the optimal matching block, the gradient calculation is added to optimize the selection and pre-editing for the matching block, so as to be integrated with the original image. A modified scheme to update the filling-front is adopted to improve the inpainting efficiency. Experimental results indicate that the proposed improved algorithm has a better computation efficiency, and has a better edge continuity in visual perception.

Key words: image inpainting, gradient calculation, pre-editing, filling-front update, computational efficiency