| 基于方向信息测度的自适应多级中值滤波器 |
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| 引用本文： | 杨海军, 梁德群, 江学峰. 基于方向信息测度的自适应多级中值滤波器[J]. 电子与信息学报, 2001, 23(12): 1326-1332. |
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| 作者姓名： | 杨海军 梁德群 江学峰 |
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| 作者单位： | 1. 西安交通大学图像处理与识别研究所,西安,710049
2. 大连海事大学信息工程学院,大连,116026 |
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| 摘 要： | 针对图像滤噪中滤除噪声和保护细节(边缘)的矛盾,本文提出一种新的基于方向信息测度的自适应多级中值滤波器。方向性是边缘和噪声的本质区别之一,通过基于方向信息测度所构造的自适应结构,决定中值滤波器的形式和滤波窗口尺寸的大小,而不需要图像和噪声的先验知识。文章比较了标准中值滤波器、单向多级中值滤波器、双向多级中值滤波器和本文方法的结果。实验表明本文方法具有更好的效果。
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| 关 键 词： | 图像滤噪 信息测度 中值滤波器 |
| 收稿时间： | 1999-06-11 |
| 修稿时间： | 1999-06-11 |
ADAPTIVE MULTILEVEL MEDIAN FILTER BASED ON DIRECTION INFORMATION MEASURE |
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| Yang Haijun, Liang Dequn, Jiang Xuefeng. ADAPTIVE MULTILEVEL MEDIAN FILTER BASED ON DIRECTION INFORMATION MEASURE[J]. Journal of Electronics & Information Technology, 2001, 23(12): 1326-1332. |
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| Authors: | Yang Haijun Liang Dequn Jiang Xuefeng |
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| Affiliation: | Inst. of Image Processing and Recognition Xi' an Jiaotong University Xi an 710049 China;College of Information Engineering Dalian Maritime University Dalian 116026 China |
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| Abstract: | This paper presents a new adaptive multilevel median filter based on direction information measure to solve the contradiction between noise attenuation and image details-preserving (edge-preserving). Direction is one of nature distinctions between noise and edge, and an adaptive algorithm based on direction information measure is constructed to decide the format and size of median filter without any knowledge of image and noise. A comparison of median filter, single direction multilevel filter, bidkection multilevel filter and the method in this paper has been done. The result indicates that the method has better effectiveness. |
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| Keywords: | Noise reducing of image Information measure Median filter |
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