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Image Segmentation and Multiple skew estimation, correction in printed and handwritten documents

机译:图像分割和多重偏斜估计,打印和手写文档中的校正

摘要

Analysis of handwritten document has always been a challenging task in the field of image processing. Various algorithms have been developed in finding solution to this problem. The algorithms implemented here for segmentation and skew detection works not only on printed or scanned document images but for also handwritten document images which creates an edge over other methodologies. Here Line segmentation for both printed and handwritten document image is done using two methods namely Histogram projections and Hough Transform assuming that input document image consists of no major skews. For Histogram Projection to work correct, the document must not contain even slight skews. Hough transform gives better results than the former case. Word Segmentation can be done using the connected components analysis. Here, we first identify connected components in the printed or handwritten document image. A methodology is being used here which detects multiple skews in multi handwritten documents or printed ones. Using clustering algorithms, we detect multiple skew blocks in a handwritten document image or printed document image or a combination of both. The algorithm used here also works for skewed multi handwritten text blocks.
机译:在图像处理领域中,手写文档的分析一直是一项具有挑战性的任务。已经找到各种算法来寻找该问题的解决方案。此处实现的用于分段和歪斜检测的算法不仅适用于打印或扫描的文档图像,而且适用于手写文档图像,与其他方法相比,它具有优势。在此,假定输入文档图像不包含主要歪斜,则使用两种方法(直方图投影和霍夫变换)对打印的文档图像和手写的文档图像进行线分割。为了使直方图投影正常工作,文档不得包含甚至很小的歪斜。霍夫变换比前一种情况提供更好的结果。可以使用连接的组件分析来完成分词。在这里,我们首先确定打印或手写文档图像中的连接组件。此处使用一种方法来检测多个手写文档或打印文档中的多个歪斜。使用聚类算法,我们可以检测手写文档图像或打印文档图像或两者的组合中的多个歪斜块。此处使用的算法也适用于倾斜的多手写文本块。

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