引入边缘信息的纹理传输改进算法

Improved Algorithm for Texture Transfer by Introducing Edge Information

本文针对Efros等人提出的块缝合纹理合成与传输算法,在搜索匹配块的过程中未考虑目标图块边缘信息这一不足之处,提出了一种改进算法.新算法在原有的搜索误差匹配公式中,通过计算梯度的方式增加了边缘信息处理项,同时整个传输过程还引入了亮度重映射的匹配预处理策略.实验结果表明,改进后算法的传递效果优于传统算法,尤其是目标图的边缘轮廓部分传递效果有比较明显的改善.

In Efros＇s classic image quilting algorithm for texture synthesis and transfer, edge information of a target image is not used in the search of blocks to match. We present an improved algorithm where a new edge item in terms of gradients is added to the original error formula for ensuring a better matching block, and a preprocessing strategy named luminance remapping is introduced in the transfer process. The experiments show that the transfer results of our algorithm are better than the traditional one, especially in the part of edges.