首页> 外国专利> GEOMETRIC FEATURE EXTRACTING DEVICE, GEOMETRIC FEATURE EXTRACTING METHOD, STORAGE MEDIUM, THREE-DIMENSIONAL MEASUREMENT APPARATUS, AND OBJECT RECOGNITION APPARATUS

GEOMETRIC FEATURE EXTRACTING DEVICE, GEOMETRIC FEATURE EXTRACTING METHOD, STORAGE MEDIUM, THREE-DIMENSIONAL MEASUREMENT APPARATUS, AND OBJECT RECOGNITION APPARATUS

机译:几何特征提取设备,几何特征提取方法,存储介质,三维测量设备和对象识别设备

摘要

A geometric feature extracting device comprising: first input means for inputting a three-dimensional shape model of a measurement object; generation means for generating two-dimensional parameter planes corresponding to curved surface patches that configure the three-dimensional shape model; first calculation means for calculating normal directions to points on the curved surface patches; holding means for holding the parameter planes and the normal directions in association with each other; second input means for inputting an observation direction used to observe the measurement object from an observation position; selection means for selecting regions in each of which the normal direction and the observation direction satisfy a predetermined angle condition from the parameter planes; and second calculation means for calculating geometric features on three-dimensional shape model corresponding to regions selected by the selection means as geometric features that configure geometric feature regions on the three-dimensional shape model, which are observable from the observation position.
机译:一种几何特征提取设备,包括:第一输入装置,用于输入测量对象的三维形状模型;生成装置,用于生成与构成所述三维形状模型的曲面补丁相对应的二维参数平面;第一计算装置,用于计算曲面补丁上各点的法线方向;用于将参数平面和法线方向彼此关联地保持的保持装置;第二输入装置,用于输入用于从观察位置观察被测物的观察方向。选择装置,用于从参数平面中选择法线方向和观察方向均满足预定角度条件的区域。第二计算装置,用于在三维形状模型上计算与由选择装置选择的区域相对应的几何特征,作为在三维形状模型上构成可从观察位置观察到的几何特征区域的几何特征的几何特征。

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