[1]野金花,侯杰.双阈值法在文字轮廓提取中的应用[J].哈尔滨理工大学学报,2009,(05):110-113.
 YE Jin-hua,HOU Jie.Application of Double Threshold Value Method in the Abstract of Character Figure[J].哈尔滨理工大学学报,2009,(05):110-113.
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双阈值法在文字轮廓提取中的应用()
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《哈尔滨理工大学学报》[ISSN:1007-2683/CN:23-1404/N]

卷:
期数:
2009年05期
页码:
110-113
栏目:
数理科学
出版日期:
2009-10-25

文章信息/Info

Title:
Application of Double Threshold Value Method in the Abstract of Character Figure
作者:
野金花; 侯杰;
黑龙江八一农垦大学文理学院;
Author(s):
YE Jin-hua; HOU Jie
School of Arts and Science; Heilongjiang August First Land Reclamation University; Daqing 163319; China
关键词:
小波变换 双阈值 边缘检测
Keywords:
wavelet transform double threshold value edge detection
分类号:
TP391.41
文献标志码:
A
摘要:
在图像的边缘检测中,利用模角分离的小波变换,结合尺度独立的算法区分了阶梯型边界和跳跃型边界,从而提取了阶梯型边界.上述算法中需选择峰值阈值,将小波变换系数较小的点滤掉,但是一幅图像中边缘的奇异性并不均匀,对变换后的整幅图像取固定阈值时,那么微弱边缘将会随着因灰度不均匀、噪声等一并被滤除.针对这一问题,在上述算法中用双阈值法代替固定阈值,在文字图像轮廓提取中取得了较好的效果.
Abstract:
In the image edge detection,the bounds of step-structure and dirac-structure are distinguished by using modular-angle-separated wavelet transform,or combining with scale-independent algorithm,thus obtaining the bounds of the step-structure.In order to filtrate the smaller point of the wavelet coefficient needs to chose threshold value of peak value used former algorithm,However,the singularity of the edge in a image is not uniform,the faintness edge will be filtered with the non-uniform of gray-scale and no...

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更新日期/Last Update: 2009-12-16