| 结合Fisher判别的手写数字特征提取方法 |
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| 引用本文： | 周慧灿,刘琼,王耀南.结合Fisher判别的手写数字特征提取方法[J].计算机工程与设计,2007,28(8):1870-1872. |
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| 作者姓名： | 周慧灿 刘琼 王耀南 |
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| 作者单位： | 1. 湖南文理学院,计算机科学系,湖南,常德,415000
2. 湖南大学,电气与信息工程学院,湖南,长沙,410082 |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 在手写数字图像的特征提取中,提出一种结合Fisher线性判别的多分辨率Gabor滤波方法,在所有特征点上寻求特定滤波方向上的局部最优滤波频率,以获得最佳滤波效果,同时压缩不相关特征.在MNIST手写数字图像库上的识别实验表明:在小样本情况下,该方法能更准确地抽取手写数字图像特征,识别效果明显优于直接进行Gabor特征提取.
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| 关 键 词： | 多分辨率Gabor滤波 Fisher线性判别 手写数字识别 特征提取 LIBSVM 结合 Fisher 线性判别 手写数字 特征提取 滤波方法 features Method 识别效果 图像特征 抽取 情况 小样本 实验 图像库 不相关特征 压缩 滤波效果 最佳 滤波频率 |
| 文章编号： | 1000-7024（2007）08-1870-03 |
| 修稿时间： | 2006-05-16 |
Method for extracting features of handwritten numeral combining fisher's discriminant |
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| ZHOU Hui-can,LIU Qiong,WANG Yao-nan.Method for extracting features of handwritten numeral combining fisher''''s discriminant[J].Computer Engineering and Design,2007,28(8):1870-1872. |
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| Authors: | ZHOU Hui-can LIU Qiong WANG Yao-nan |
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| Affiliation: | 1. Department of Computer Science, Hunan University of Art and Science, Changde 415003, China; 2. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China |
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| Abstract: | In extracting the features of handwritten numeral,a method bases on multi-resolution Gabor filter which combined Fisher's linear discriminant is presented.According to the method,local optimum filtering frequencies in certain orientations is determined at all of the feature points.The purpose is to obtain the best filtering results and compress the irrelevant features.Experiments for handwritten numeral recognition to MNIST database indicates that the method can extract the features of handwritten numeral more efficiently and the effect of recognition is obviously better than directly extracting Gabor features conditions of small sample. |
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| Keywords: | multi-resolution Gabor filter fisher's linear discriminant handwritten numeral recognition features extracting LIBSVM |
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