| 梯度熵改进边缘检测的自适应阈值曲面分割算法 |
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| 引用本文： | 魏颖,武林,贾同,林明秀.梯度熵改进边缘检测的自适应阈值曲面分割算法[J].东北大学学报(自然科学版),2011,32(6):781-785. |
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| 作者姓名： | 魏颖 武林 贾同 林明秀 |
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| 作者单位： | 东北大学医学影像计算教育部重点实验室,辽宁沈阳,110819 |
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| 基金项目： | 国家自然科学基金资助项目(60671050); 中央高校基本科研业务费专项资金资助项目(N100404010) |
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| 摘 要： | 光照不均匀往往造成背景亮度不均和灰度分布范围较大,会导致图像分割困难和不准确.考虑图像的边缘信息受光线变化相对不敏感,引入梯度熵信息对Canny算法进行改进提取准确合适的边缘.采用最小二乘法的多项式曲面拟合获得阈值曲面,进而提出了基于梯度熵改进边缘检测的自适应阈值曲面分割算法.对多种背景灰度分布不均匀的图像进行算法验证...
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| 关 键 词： | 梯度熵 边缘检测 阈值曲面 图像分割 |
An Adaptive Threshold Surface Segmentation Algorithm Based on Improved Edge Detection Using Gradient Entropy |
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| WEI Ying,WU Lin,JIA Tong,LIN Ming-xiu.An Adaptive Threshold Surface Segmentation Algorithm Based on Improved Edge Detection Using Gradient Entropy[J].Journal of Northeastern University(Natural Science),2011,32(6):781-785. |
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| Authors: | WEI Ying WU Lin JIA Tong LIN Ming-xiu |
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| Institution: | WEI Ying,WU Lin,JIA Tong,LIN Ming-xiu(Key Laboratory of Medical Imaging Calculation of the Ministry of Education,Northeastern University,Shenyang 110819,China.) |
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| Abstract: | To solve the segmentation problem of the non-uniform illumination and the wide range distribution of grayscale gradation in target and background,considering the information on edge of an image is insensitive to the change of light,quoting of gradient entropy to improve Canny algorithm to detect appropriate edge.Using polynomial curved surface fitting of least square method to get threshold surface to segment targets in the uneven background,so an adaptive threshold surface segmentation algorithm with impro... |
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| Keywords: | gradient entropy edge detection threshold surface image segmentation |
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