摘要
针对主轴方法和矩方法各自的特点，提出将这两种方法相融合的物体归一化和识别的新思想．首先推导出主轴唯一性判别准则，有效地解决了物体取向的归一化问题．然后推导出了对物体平移、取向和比例变化归一化的３－Ｄ不变矩．最后提出由二阶、三阶３－Ｄ不变矩组成的判别向量和识别判据．对１２个三维物体进行归一化和识别的实验结果验证了本文方法的有效性．
A new idea is presented in this paper which integrates the principal axes method and moment method to normalize and recognize 3D objects. First, criteria for determining the unique principal axes are established which can perform efficiently to normalize the orientations of 3D objects. Then, 3D moment invariants which are position, orientation and scaling independent are derived. Finally, by using the second and third order moment invariants a discriminating vector and criteria for 3D objects recognition are presented. Experimental results of normali zation and recognition of twelve 3D objects show the efficiency of our method.
出处
《自动化学报》
EI
CSCD
北大核心
1996年第6期672-680,共9页
Acta Automatica Sinica
基金
国家攀登计划
自然科学基金
关键词
主轴方法
矩方法
归一化
模式识别
Principal axes method, moment method, normalization, 3D moment invariants
