甲骨拓片字形图像复原方法

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中文信息学报 ›› 2010, Vol. 24 ›› Issue (2) : 116-122.

综述

甲骨拓片字形图像复原方法

顾绍通^1,2,3

作者信息 +

Character Image Restoration Algorithm of Jiagu Rubbings

GU Shaotong^1,2,3

Author information +

History +

摘要

提出了一种基于自适应阈值和分形几何的甲骨拓片字形图像复原方法。文章分析了甲骨拓片噪声的特点以及字形图像边缘的分形特征,通过计算自适应阈值对噪声区域进行填充。采用统计的方法计算甲骨拓片字形图像边缘的分形维数特征,对字形图像边缘进行压缩变换,进而对甲骨拓片字形图像边缘进行平滑。实验结果显示,这一方法的图像复原效果是比较明显的。

Abstract

A character image restoration of Jiagu rubbings method based on adaptive threshold and fractal geometry is proposed in this paper. The paper analyzes the characteristics of the image noise and the edges of the characters on Jiagu rubbings. Firstly, we estimate the adaptive threshold by means of Bayes risk function and clear the noise regions. Then we calculate the fractal dimension of the character edge on Jiagu rubbings by means of statistics. Finally, we perform the transformation to the character edges so as to smooth the character edges of Jiagu rubbings image. The experimental results show that the proposed method could smooth the character edge of Jiagu rubbings significantly.
Key wordscomputer application; Chinese information processing;Jiagu　rubbings; adaptive threshold; fractal geometry; fractal dimension; compression transformation; character image restoration

导出引用

顾绍通1,2,3. 甲骨拓片字形图像复原方法. 中文信息学报. 2010, 24(2): 116-122

GU Shaotong1,2,3. Character Image Restoration Algorithm of Jiagu Rubbings. Journal of Chinese Information Processing. 2010, 24(2): 116-122

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基金

国家自然科学基金资助项目(30740040);江苏省“333高层次人才培养工程”科研项目;江苏省社会科学基金项目(09YYB011);徐州师范大学人文社会科学研究基金重点资助项目(08XWA04)

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Received	Published
2009-01-18	2010-04-15
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2010-04-15

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