| 掺气水流数字图像上气泡提取的二值化阈值确定 |
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| 引用本文： | 刘荣丽,戴光清,陈刚. 掺气水流数字图像上气泡提取的二值化阈值确定[J]. 水力发电, 2002, 0(11): 59-61 |
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| 作者姓名： | 刘荣丽 戴光清 陈刚 |
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| 作者单位： | 1. 四川大学,四川,成都,610065
2. 西安理工大学,陕西,西安,710048 |
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| 基金项目： | 国家自然科学基金 (5 0 0 790 2 0 )，四川大学高速水力学国家重点实验室访问学者基金的资助 |
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| 摘 要： | 随着数字图像相关技术的迅速发展，其在水工水力学精细测量中的应用越来越受到关注，但在掺气水流中的应用研究却很少。笔者结合掺气水流的特点，比较了3种从掺气水流数字图像中识别水和气的阈值确定算法，并通过试验验证其算法的可靠性。其成果为以后数字图像处理技术在测量气泡速度和掺气浓度中的应用打下了良好的基础。
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| 关 键 词： | 掺气水流 气泡 检测 图像二值化 阈值 迭代法 最大类间方差法 |
| 文章编号： | 0559-9342(2002)11-0059-03 |
| 修稿时间： | 2002-08-05 |
Calculation of binary threshold value to detect bubble from digital image of aeration water flow |
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| LIU Rong-li and DAI Guang-qing. Calculation of binary threshold value to detect bubble from digital image of aeration water flow[J]. Water Power, 2002, 0(11): 59-61 |
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| Authors: | LIU Rong-li and DAI Guang-qing |
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| Affiliation: | LIU Rong-li and DAI Guang-qing (Sichuan University) CHEN Gang (Xi'an Technology University) |
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| Abstract: | With the rapid development of digital image technique, it is highly concerned in the application to the fine measurement in hydraulics but few application and study in aeration water flow. Considering the features of aeration water, this paper discusses three calculation methods for finding out threshold to distinguish air bubbles from water in the digital image of aeration water flow and proves the reliability of such methods through a lot of experiments. These results lay good foundation for the application of the digital image processing technology in the bubble speed measurement and aeration consistency. |
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| Keywords: | aeration water flow bubble detection binary image threshold value ENT iteration method OTSU |
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