伪Zernike矩的不变性分析及其应用  

ANALYSIS AND APPLICATION OF INVARIANT PSEUDO-ZERNIKE MOMENTS

作　　者：左文明[1] 黎绍发[1] 曾宪贵[1] 

机构地区：[1]华南理工大学计算机学院,广东广州510640

出　　处：《计算机应用与软件》2005年第4期85-87,共3页Computer Applications and Software

摘　　要：本文从几何矩的概念出发,详细介绍了Zernike和伪Zernike矩。然后重点分析了伪Zernike矩的旋转、位移及尺度不变性。本文利用脱机手写签名图像对此进行了验证,实验结果证明了其不变性特征。故本文提出利用伪Zernike矩来进行脱机手写签名图像的特征提取。Firstly geometric moments,Zernike moments and pseudo-Zernike moments are introduced in detail in this paper.Then rotation invariance,translation invariance and scale invariance of pseudo-Zernike are mainly discussed.We testify them using offline handwritten signature images.And experiment results show the invariant characteristics of pseudo-Zernike moments.So we think pseudo-Zernike moments are approriate for feature extraction of handwritten signature.

关 键 词：Zernike矩 不变性分析 应用 手写签名 尺度不变性 不变性特征 详细介绍 特征提取 几何矩 脱机 图像 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TN911.6[自动化与计算机技术—计算机科学与技术]