Metric Rectification of Curved Document Images
文献类型：期刊论文
| 作者 | Meng, Gaofeng1 ; Pan, Chunhong1; Xiang, Shiming1; Duan, Jiangyong1; Zheng, Nanning2
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| 刊名 | IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE
 |
| 出版日期 | 2012-04-01 |
| 卷号 | 34期号:4页码:707-722 |
| 关键词 | Document image analysis imaging geometry geometric correction shape-from-X mesh warping |
| 英文摘要 | In this paper, we propose a metric rectification method to restore an image from a single camera-captured document image. The core idea is to construct an isometric image mesh by exploiting the geometry of page surface and camera. Our method uses a general cylindrical surface (GCS) to model the curved page shape. Under a few proper assumptions, the printed horizontal text lines are shown to be line convergent symmetric. This property is then used to constrain the estimation of various model parameters under perspective projection. We also introduce a paraperspective projection to approximate the nonlinear perspective projection. A set of close-form formulas is thus derived for the estimate of GCS directrix and document aspect ratio. Our method provides a straightforward framework for image metric rectification. It is insensitive to camera positions, viewing angles, and the shapes of document pages. To evaluate the proposed method, we implemented comprehensive experiments on both synthetic and real-captured images. The results demonstrate the efficiency of our method. We also carried out a comparative experiment on the public CBDAR2007 data set. The experimental results show that our method outperforms the state-of-the-art methods in terms of OCR accuracy and rectification errors. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Computer Science, Artificial Intelligence ; Engineering, Electrical & Electronic |
| 研究领域[WOS] | Computer Science ; Engineering |
| 关键词[WOS] | PERSPECTIVE IMAGES ; SHAPE ; RESTORATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000300581700007 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/3713]  |
| 专题 | 自动化研究所_模式识别国家重点实验室_遥感图像处理团队 |
| 作者单位 | 1.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China 2.Xi An Jiao Tong Univ, Inst Artificial Intelligence & Robot, Xian 710049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Gaofeng,Pan, Chunhong,Xiang, Shiming,et al. Metric Rectification of Curved Document Images[J]. IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE,2012,34(4):707-722. |
| APA | Meng, Gaofeng,Pan, Chunhong,Xiang, Shiming,Duan, Jiangyong,&Zheng, Nanning.(2012).Metric Rectification of Curved Document Images.IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE,34(4),707-722. |
| MLA | Meng, Gaofeng,et al."Metric Rectification of Curved Document Images".IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE 34.4(2012):707-722. |
入库方式： OAI收割
来源：自动化研究所
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