摘要
提出了一种利用仿射不变量同底三角形面积比作为识别特征,结合模糊识别理论对仿射变换中的平面多边形进行识别的方法。该方法利用同底三角形面积比构造特征矢量,通过一个强化的局部特征确定待识别对象与模板多边形之间的匹配起始边后,用正态分布型隶属函数判定待识别多边形与模板多边形之间对应各边的隶属度,综合利用阈值原则和最大隶属度原则对待识别对象所属的类型作出判定。实验结果表明,该方法鲁棒高效,对噪音不敏感。
In this paper, an algorithm is proposed to recognize polygons. As a characteristic invariant, the affine invariant triangle area ratio of the same hemline was used to describe the polygon, and the fuzzy theory was applied in its recognition. First, a pair of edges of two polygons-a target polygon and a model polygon for matching beginning was identified by a reinforced local property. Then, the degrees of membership between each pair of edges of two polygons were calculated by a normal school membership function. The final result was obtained based on threshold principle and maximum membership principle. The experiment results show that the algorithm is efficient, robust and not susceptible to noise.
出处
《机械科学与技术》
CSCD
北大核心
2011年第6期918-921,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
兰州交通大学"青蓝"人才工程计划(QL-06-11A)资助
关键词
仿射不变量
同底三角形面积比
多边形
识别
affine invariant
triangle area ratio of the same hemline
polygon
recognition
