完备局部凸凹计数模式及其旋转不变纹理分类  

Completed local convex-and-concave count pattern for rotation invariant texture classification

作　　者：陈熙 Chen Xi(School of Big Data ＆ Computer Science,Guizhou Normal University,Guiyang 550025,Chin)

机构地区：[1]贵州师范大学大数据与计算机科学学院,贵阳550025

出　　处：《计算机应用研究》2018年第8期2549-2552,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(61762022);贵州师范大学2017年博士科研启动项目;云南省应用基础研究计划项目(KKS0201503018);贵州省教育厅创新群体重大研究项目(黔教合KY字[2016]027);工业4.0仿真设计创新中心资助项目(黔科中引地[2016]4006)

摘　　要：针对局部凸凹模式算法对旋转纹理图像描述的不足,提出了局部凸凹计数模式进行旋转不变纹理描述。局部凸凹计数模式统计纹理的局部凸或凹模式数目,而抛弃了局部凸凹模式的结构信息。在纹理图像发生平面内旋转的情况下,局部凸凹计数模式所提取的纹理特征具有不变性。另外,为了增强局部凸凹计数模式的性能,提出了完备局部凸凹计数模式算法。完备局部凸凹计数模式不仅统计了局部凸或凹模式数目,还对局部纹理的凸或凹强度进行了描述,中心像素所包含的鉴别信息也统计在完备局部凸凹模式算法中。两个纹理数据库和一个掌纹数据库上的实验充分表明完备局部凸凹计数模式是一种有效的旋转不变纹理特征提取算法。Local convex-and-concave pattern is a newly proposed algorithm for texture classification.However,local convex-and-concave pattern could be weak when facing rotated texture.Aiming at this weakness of local convex-and-concave pattern,this paper proposed a novel texture descriptor,local convex-and-concave count pattern.Local convex-and-concave count pattern counted the number of patterns of convex or concave and abandoned the local convex-and-concave structural information.Furthermore,to enhance the performance of local convex-and-concave count pattern,it also proposed competed local convex-and-concave count pattern,in which the magnitude of convex or concave was also considered.It converted the center pixels represented the image gray levels into a binary code by global threshold in local convex-and-concave count pattern.Extensive experiments on two texture databases and one palmprint database validate the effectiveness of competed local convex-and-concave count pattern.

关 键 词：局部凸凹模式 完备局部凸凹计数模式 旋转不变纹理分类 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]