| 航拍胶片注释信息字符识别方法 |
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| 引用本文： | 陈凯,曾庆业,庞怡杰,王晶,唐婷. 航拍胶片注释信息字符识别方法[J]. 计算机工程与应用, 2009, 45(7): 235-237. DOI: 10.3778/j.issn.1002-8331.2009.07.071 |
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| 作者姓名： | 陈凯 曾庆业 庞怡杰 王晶 唐婷 |
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| 作者单位： | 1. 中国科学院遥感应用研究所,北京,100101
2. 北京2861信箱6分箱,北京,000085 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目 |
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| 摘 要： | 航拍胶片中的注释信息记录着重要的成像参数。胶片数字化后需要自动识别出注释信息供后续处理使用。介绍了注释信息字符识别的主要步骤,包括字符区域定位、二值化、字符分割和基于神经网络的字符识别;重点研究了预处理过程,特别是注释信息块的二值化,提出了一种新的阈值方法。大量的实验表明,实现的系统总体上具有很高的识别率,该阈值方法的效果能与Sauvola算法和White算法相比,而所需时间却大大减少了。
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| 关 键 词： | 字符识别 阈值 字符分割 神经网络 |
| 收稿时间： | 2008-01-18 |
| 修稿时间： | 2008-6-13 |
Character recognition of comment information in aerial photos |
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| CHEN Kai,ZENG Qing-ye,PANG Yi-jie,WANG Jing,TANG Ping. Character recognition of comment information in aerial photos[J]. Computer Engineering and Applications, 2009, 45(7): 235-237. DOI: 10.3778/j.issn.1002-8331.2009.07.071 |
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| Authors: | CHEN Kai ZENG Qing-ye PANG Yi-jie WANG Jing TANG Ping |
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| Affiliation: | CHEN Kai,ZENG Qing-ye,PANG Yi-jie,WANG Jing,TANG Ping 1.Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101,China 2.P.O.Box2861-6,Beijing 100085,China |
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| Abstract: | In the comment information of aerial photos,there exist important imaging parameters.The comment information must be automatically recognized for later use.In this paper,the process of comment information is introduced,including character region location,binarization,character segmentation and character recognition based on neural network.Preprocessing is lucubrated, especially binarization of comment information block.A thresholding method is proposed.The experiments demonstrate that the system implemented... |
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| Keywords: | character recognition thresholding character segmentation neural network |
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