一种基于目标边界的不变特征提取方法  

A Technique for Invariant Feature Extraction Based on Shape Boundaries

作　　者：刘钢钦[1] 汪强[1] 

机构地区：[1]长沙大学计算机科学与技术系,长沙410003

出　　处：《计算机工程与应用》2005年第26期91-93,共3页Computer Engineering and Applications

摘　　要：提出了一种基于目标边界的不变特征提取方法。导出了用物体角点坐标表示的低阶边界矩的闭合形式,构造了基于边界矩的仿射变换不变量。该方法只需要对物体角点进行简单的代数运算,因此,该方法简单明了,计算量很小。实验结果证明了该方法的有效性。Method for invariant feature extraction based on shape boundaries are proposed.The closed forms of lower order boundary moments and the affine invariants are derived.This approach computes the affine invariants using only shape＇s comer pixels.Eexperiments results suggest that the affine invariants can be used as effective features for object discrimination or recognition.

关 键 词：特征提取 形状识别 矩不变量 仿射变换 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]