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首页> 外文期刊>International Journal of Image and Graphics >A ROBUST SYSTEM FOR THRESHOLDING AND SKEW DETECTION IN MIXED TEXT/GRAPHICS DOCUMENTS
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A ROBUST SYSTEM FOR THRESHOLDING AND SKEW DETECTION IN MIXED TEXT/GRAPHICS DOCUMENTS

机译:混合文本/图形文档中的阈值和斜率检测的鲁棒系统

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摘要

This article presents an automatic system that takes in grayscale scanned images, which could be mixed text/graphic documents, and performs thresholding and skew detection on the document images. The system consists of two major components; multistage thresholding and skew detection. The proposed skew detection algorithm has no restriction on detectable angle range and does not rely on large blocks of text. It works well on textual document images, graphical images and mixed text and graphic images. The performance of the systems was evaluated using over 60 images that consist of real life documents like envelopes and artificial mixed text/graphic icons. The superior performance of thresholding is clear compared to other techniques from the evaluation. The skew detection algorithm is robust when compared with other methods when very few text lines are present in the document image.
机译:本文介绍了一种自动系统,该系统可以接收灰度扫描的图像(可以是混合的文本/图形文档),并且可以对文档图像执行阈值化和倾斜检测。该系统由两个主要部分组成;多级阈值和偏斜检测。所提出的倾斜检测算法对可检测角度范围没有限制,并且不依赖于大文本块。它适用于文本文档图像,图形图像以及混合的文本和图形图像。系统使用超过60张图像进行了评估,这些图像由现实生活中的文件(如信封和人工混合的文本/图形图标)组成。与评估中的其他技术相比,阈值处理的优越性能显而易见。当文档图像中出现很少的文本行时,与其他方法相比,歪斜检测算法是可靠的。

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