| 基于消失点的场景文本透视变形校正方法 |
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| 引用本文： | 陈德运,尹芳,吴锐.基于消失点的场景文本透视变形校正方法[J].南京理工大学学报(自然科学版),2011(4). |
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| 作者姓名： | 陈德运 尹芳 吴锐 |
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| 作者单位： | 哈尔滨理工大学计算机科学与技术学院;哈尔滨工业大学计算机科学与技术学院; |
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| 基金项目： | 国家自然科学基金(60672090); 黑龙江省自然科学基金(QC2009C35); 黑龙江省教育厅科学技术研究项目(12511098) |
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| 摘 要： | 针对自然场景文本识别过程中文本图像的透视变形问题,提出一种有效的基于消失点的场景文本透视变形校正方法。该方法首先利用由文本字符边缘端点拟合得到的文本基线检测消失点,然后利用消失点信息估计单应矩阵部分参数,使用单应矩阵实现图像校正,得到正视的文本图像。与其他方法相比,该方法受文本版式的限制更少。实验结果表明,该方法能有效校正文字行数较少的场景文本,明显提高字符识别率。
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| 关 键 词： | 场景文本 透视变形 变形校正 消失点 |
Perspective Distortion Correction Method of Scene Text Based on Vanishing Point |
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| CHEN De-yun,YIN Fang,WU Rui.Perspective Distortion Correction Method of Scene Text Based on Vanishing Point[J].Journal of Nanjing University of Science and Technology(Nature Science),2011(4). |
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| Authors: | CHEN De-yun YIN Fang WU Rui |
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| Institution: | CHEN De-yun1,YIN Fang1,WU Rui2(1.School of Computer Science and Technology,Harbin University of Science and Technology,Harbin 150080,China,2.School of Computer Science and Technology,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | An effective perspective distortion correction method is presented to resolve the perspective distortion correction in text recognition of natural scene.A vanishing point is detected by text baseline obtained from the tip point of text character.A vanishing point position is used to get some deformation parameters of homography matrix,which is utilized to correct the image.The front view image is achieved using a homography matrix.Compared with other methods,this method is less restricted by text layout.Exp... |
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| Keywords: | scene texts perspective distortion distortion correction vanishing points |
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