【作者】 陈家新； 郑丽娜；

【Author】 CHEN Jiaxin ZHENG Lina Electronic Information Engineering College, Henan University of Science and Technology, Luoyang 471003

【机构】 河南科技大学电子信息工程学院；

【摘要】 本文在MRF模型和已有块拼贴算法的基础上提出一种基于多分辨率合成的纹理块拼贴算法, 结合多分辨率合成算法的思想采用多层纹理图像金字塔来保持样本纹理的结构特征,在每个金字塔层的搜索过程中采用KD树对搜索过程进行加速,提高了合成速度。同时,根据纹理的邻域相关性, 采用螺旋顺序逐块合成纹理图像,加强对合成过程的约束,克服了合成过程中不连续区域的出现．本文算法较好的维持了样本图的结构特征,在保证纹理合成质量的同时,能够有效的减少算法的计算量, 有效的提高了纹理合成的质量和速度。更多还原

【Abstract】 In this paper we present an algorithm based on MRF model and some previous patch-based algorithms. We model the texture image combining the ideas of the algorithm based on multi-resolution, adopting multi-layer image pyramid to keep the structural feature of sample texture image. Though this method, we improved the quality of synthesized image. During the procedure of searching best-matching texture in the pyramid layer, we employ KD tree to speed up the searching process. Meanwhile according to the neighbor correlation of texture image, we synthesize textures patch by patch spirally, enhancing restriction for the synthesizing procedure, and avoiding the discontinuous area happening in the synthesized image. It was practically proved that the modified algorithm can keep better structural feature of sample image in synthesized image. While this algorithm keeps the quality of texture synthesis, it also can reduce computational complexity of algorithm, so improves the speed of texture synthesis.更多还原