遥感影像清晰度评价方法的比较 |
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引用本文: | 刘鹏,王荣彬,庞文婷,李慧芳,李平湘. 遥感影像清晰度评价方法的比较[J]. 地理空间信息, 2012, 0(2): 44-46 |
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作者姓名: | 刘鹏 王荣彬 庞文婷 李慧芳 李平湘 |
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作者单位: | [1]武汉大学资源与环境科学学院,湖北武汉430079 [2]武汉大学测绘遥感信息工程国家重点实验室,湖北武汉430079 [3]中国土地勘测规划院,北京100035 |
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基金项目: | 国家自然科学基金资助项目(41071269); 中国土地勘测规划院资助项目(20101709369); 中央高校基本科研业务费专项资助项目(2010-156) |
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摘 要: | 清晰度是反映影像质量的重要因素。首先对遥感影像的清晰度评价方法进行了总结,重点介绍了平均梯度、灰度-梯度共生矩阵和Q指数3种方法,并通过大量测试比较了3种方法的优劣。实验结果表明,Q指数要明显优于前2种方法,是一个较好的遥感影像清晰度评价指标。
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关 键 词: | 清晰度 平均梯度 灰度-梯度共生矩阵 Q指数 |
Comparative of Remote Sensing Image Clarity Evaluation |
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Abstract: | Image clarity is one of the important factors that reflect image quality.This paper firstly summarized the methods of image clarity evaluation.Then three important evaluation me-thods were introduced,which included average gradient,the gray level-gradient co-occurrence matrix(GLGCM) and Metric Q.Finally,a large number of tests were conducted which aimed to distin-guish the three methods.The result shows that Metric Q is significantly better than the first two methods and can be used to evaluate image clarity efficiently. |
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Keywords: | clarity average gradient GLGCM Metric Q |
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