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Document Localization Algorithms Based on Feature Points and Straight Lines

机译:基于特征点和直线的文档定位算法

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The important part of the system of a planar rectangular object analysis is the localization: the estimation of projective transform from template image of an object to its photograph. The system also includes such subsystems as the selection and recognition of text fields, the usage of contexts etc. In this paper three localization algorithms are described. All algorithms use feature points and two of them also analyze near-horizontal and near- vertical lines on the photograph. The algorithms and their combinations are tested on a dataset of real document photographs. Also the method of localization quality estimation is proposed that allows configuring the localization subsystem independently of the other subsystems quality.
机译:平面矩形对象分析系统的重要部分是定位:估计从对象的模板图像到其照片的投影变换。该系统还包括诸如文本字段的选择和识别,上下文的使用等子系统。在本文中,描述了三种定位算法。所有算法都使用特征点,其中两个还分析照片上的近水平线和近垂直线。这些算法及其组合在真实文档照片的数据集上进行了测试。还提出了定位质量估计的方法,该方法允许独立于其他子系统质量来配置定位子系统。

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