| 二维砂箱溶质示踪实验的图像分析法 |
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| 引用本文： | 宋小源,刘杰,郑春苗.二维砂箱溶质示踪实验的图像分析法[J].环境科学学报,2012,32(10):2470-2475. |
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| 作者姓名： | 宋小源 刘杰 郑春苗 |
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| 作者单位： | 北京大学工学院水资源研究中心,北京,100871 |
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| 基金项目： | 国家自然科学基金项目(No.40802053) |
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| 摘 要： | 有色示踪剂在砂箱溶质运移实验中有着广泛的应用,因此,本文介绍了一种通过对数字图像进行分析以确定多孔介质中有色示踪剂浓度分布的方法.在实验过程中,通过建立有色示踪剂浓度与图像颜色要素之间的定量关系,从而能够利用数字图像迅速确定某一时刻砂箱内部的示踪剂浓度分布.结果发现,与传统定点采样方法相比,图像分析法可以达到更高的空间和时间分辨率,从而观察到有可能被忽视的重要溶质运移过程,能够为地下水溶质运移实验研究提供了一种经济实用和高空间分辨率的数据采集手段.但由于色彩空间变化范围的限制,图像分析法只能在一定溶质浓度范围内适用.
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| 关 键 词： | 砂箱实验 图像分析法 溶质运移 |
| 收稿时间： | 2011/12/27 0:00:00 |
| 修稿时间： | 2012/2/12 0:00:00 |
Image analysis of concentration distribution in two-dimensional sandbox tracer experiment |
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| SONG Xiaoyuan,LIU Jie and ZHENG Chunmiao.Image analysis of concentration distribution in two-dimensional sandbox tracer experiment[J].Acta Scientiae Circumstantiae,2012,32(10):2470-2475. |
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| Authors: | SONG Xiaoyuan LIU Jie and ZHENG Chunmiao |
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| Institution: | Water Center, College of Engineering, Peking University, Beijing 100871;Water Center, College of Engineering, Peking University, Beijing 100871;Water Center, College of Engineering, Peking University, Beijing 100871 |
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| Abstract: | Dye tracer has been widely used in sandbox experiments of solute transport.This study uses image analysis to determine the concentration of dye tracer in porous media.By establishing a quantitative relationship between the concentration and the hue value of the dye tracer,the concentration distribution of the dye tracer can be quickly obtained.The image analysis provides a cost-effective and high-resolution method to quantify the solute concentration distribution in two-dimensional sandbox experiment for groundwater solute transport studies.Because the range of image hue values is limited,the image analysis method can only be applied to a certain range of solute concentration. |
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| Keywords: | Sandbox experiment image analysis solute transport |
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