基于金字塔的改进混合纹理合成  

Pyramid-based Improved Hybrid Texture Synthesis

作　　者：施云惠[1] 郭荆玮[1] 孔德慧[1] 靳威[2] 肖小芳[1] 

机构地区：[1]北京工业大学计算机学院多媒体与智能软件技术北京市重点实验室,北京100124 [2]里贾纳大学计算机学院,萨斯喀彻温S4S0A2

出　　处：《北京工业大学学报》2009年第6期845-850,共6页Journal of Beijing University of Technology

基　　金：国家自然科学基金资助项目(60572104);国家科技攻关项目(2005BA904B09);北京市自然科学基金(4061001);北京市教育委员会科技发展计划面上项目(KM200710005017)

摘　　要：对传统的混合纹理合成方法进行了改进,提出一种新的基于金字塔的改进纹理合成方法.这种算法用图像金字塔和Ashikhmin搜索策略来保存纹理的结构特征并加快合成速度.本文还提出了一种通过对样本纹理进行预计算来加速块匹配过程的方法.与混合纹理合成方法相比较,本方法在对合成质量影响不大的前提下显著改善了合成速度.As two main approaches to texture synthesis, pixel-based synthesis and patch-based synthesis are complementary to each other in terms of texture representation and distortion, Nealen and Alexa＇ s hybrid texture synthesis （HTS） has achieved a good result by combining the advantages of the two approaches while avoiding many of their weaknesses. This paper presents a new approach for texture synthesis called ＂Pyramid- Based Improved Hybrid Texture Synthesis＂ based on HTS. The algorithm uses image pyramid and Ashikhmin＇ s search strategy to preserve the global structure of texture and speed up the synthesizing process. In addition, a new method to accelerate the patch matching process by pre-computing the input texture are proposed. Compared with the HTS, the synthesizing process of the technique is significantly faster in average with the synthesis performance and is as good as HTS.

关 键 词：混合纹理合成 金字塔 搜索策略 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]