一种基于局部Gabor滤波器组的手写体汉字识别方法  

Handwritten Chinese character recognition based on local gabor filter bank

作　　者：陈蓉[1] 邓洪波[2] 金连文[3] 

机构地区：[1]北京邮电大学电子工程学院,北京100876 [2]香港中文大学计算机科学与工程系 [3]华南理工大学电子与信息学院,广东广州510640

出　　处：《计算机应用》2007年第5期1222-1224,共3页journal of Computer Applications

基　　金：教育部新世纪优秀人才支持计划(NCET-050736)

摘　　要：针对单一尺度的Gabor滤波器组只对某一特定粗细的手写体汉字敏感的缺点,提出了一种新颖的多尺度局部Gabor滤波器组。为了评估该方法的识别性能,实现了一个基于Gabor特征的手写体汉字识别系统,实验表明多尺度全局Gabor滤波器组在识别性能上明显提高,局部Gabor滤波器组在基本保持识别性能的情况下,特征维数明显降低,计算量和内存需求减少。该方法选取局部Gabor滤波器,对863 HCL2000手写体汉字数据库的识别,最高平均识别率达到了92.32%,表明了该方法在手写体汉字识别中的有效性。This paper proposed a new local Gabor filter bank with multiple scales to, overcome the disadvantage of the traditional Gabor filter bank with a single scale, which is sensitive to the width variation of handwritten Chinese characters. In order to evaluate the performance of our method, a handwritten Chinese character recognition system based on Gabor feature was implemented. Experimental results show that the method is effective to both dimension reduction and recognition performance. The novelty of the method is to select partial Gabor filter bank with part of m scales and n orientations to extract Gabor feature. The best average recognition rate of 92. 32% was achieved, which indicates this method is suitable for handwritten Chinese character recognition.

关 键 词：GABOR滤波器 特征提取 线性判别分析 手写体汉字识别 

分 类 号：TP391.43[自动化与计算机技术—计算机应用技术]