历史文献图像的自适应增强

2007 IEEE International Symposium on Signal Processing and Information Technology Pub Date : 2007-12-01 DOI:10.1109/ISSPIT.2007.4458058

N. Kishore, P. Rege

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引用次数: 6

摘要

本文提出了一种简单且计算效率高的文档图像增强方法。我们使用非锐化遮罩来增强退化文档中的边缘细节信息。然后使用该图像来调整每个像素的局部阈值。并与拉普拉斯符号法和Otsu法进行了实验比较。结果表明，该方法可以使图像的清晰度提高近一半的计算时间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Adaptive Enhancement of Historical Document Images

In this paper we present a simple and computationally efficient method for document image enhancement. We use Unsharp masking to enhance the edge detail information in the degraded document. This image is then used to adjust the local threshold for each pixel. Proposed method is experimentally compared with Laplacian sign method and the Otsu method. It is shown that the method improves sharpness of the image with nearly half computational time.

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2007 IEEE International Symposium on Signal Processing and Information Technology

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