机构地区: 华南理工大学计算机科学与工程学院
出 处: 《计算机应用与软件》 2005年第4期85-87,共3页
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.