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Multi-Oriented Text Extraction in Stylistic Documents

机译:文体文档中的多方向文本提取

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摘要

In many documents such as maps, engineering drawings and artistic documents, etc. there exist many printed as well as handwritten materials where text regions and text-lines are not parallel to each other, curved in nature, and having various types of text such as different font size, text and non-text areas lying close to each other and non-straight, skewed and warped text-lines. Optical character recognition (OCR) systems available commercially such as ABYY fine reader and Free OCR, are not capable of handling different ranges of stylistic document images containing curved, multi-oriented, and stylish font text-lines. Extraction of individual text-lines and words from these documents is generally not straight forward. Most of the segmentation works reported is on simple documents but still it remains a highly challenging task to implement an OCR that works under all possible conditions and gives highly accurate results, especially in the case of stylistic documents. This paper presents dilation and flood fill morphological operations based approach that extracts multi-oriented text-lines and words from the complex layout or stylistic document images in the subsequent stages. The segmentation results obtained from our method proves to be superior over the standard profiling-based method.
机译:在许多文件中,例如地图,工程图和艺术文件等,存在许多印刷品和手写材料,其中文本区域和文本线彼此不平行,自然弯曲并且具有各种类型的文本,例如不同的字体大小,文本和非文本区域彼此靠近,并且非直线,倾斜和扭曲的文本行。商业上可用的光学字符识别(OCR)系统(例如ABYY精细阅读器和Free OCR)无法处理包含弯曲,多方向和时尚字体文本行的不同范围的样式文档图像。从这些文档中提取单个文本行和单词通常是不直接的。报告的大多数细分工作都是在简单的文档上进行的,但要实现在所有可能的条件下都可以工作并给出高度准确的结果的OCR仍然是一项极富挑战性的任务,尤其是在样式文档的情况下。本文提出了一种基于膨胀和泛洪形态学运算的方法,该方法可在后续阶段从复杂布局或文体文档图像中提取多方向的文本行和单词。从我们的方法获得的分割结果证明优于基于标准配置文件的方法。

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