| 基于数字图像处理技术的VCAmix量测方法 |
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| 引用本文： | 徐科,张肖宁,王端宜.基于数字图像处理技术的VCAmix量测方法[J].公路,2005(11):151-154. |
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| 作者姓名： | 徐科 张肖宁 王端宜 |
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| 作者单位： | 华南理工大学道路工程研究所,广州市,510641;华南理工大学道路工程研究所,广州市,510641;华南理工大学道路工程研究所,广州市,510641 |
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| 基金项目： | 国家自然科学基金资助项目（No.50278037） |
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| 摘 要： | 沥青混合料试件粗集料骨架间隙率（VCAmix）是沥青混合料试件的重要体积参数之一。长期以来，VCAmix的量测主要依赖于利用密度将重量换算为体积的计算法。由于转换过程的误差，加之吸附沥青的影响。导致计算值与实际值存有一定偏差。本文介绍了一种利用数字图像处理技术直接量测VCAmix的方法。该方法使用彩色石料区分粗、细集料，并利用彩色阀值直接分割图像。结果证明该方法准确性好。
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| 关 键 词： | VCAmix 数字图像处理 彩色石料 |
| 文章编号： | 0451-0712（2005）11-0151-04 |
| 收稿时间： | 2005-06-24 |
| 修稿时间： | 2005-06-24 |
A Measurement Method of Percent Voids in Coarse Mineral Aggregates in Asphalt Mixtures Based on Digital Image Processing Technique |
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| XU Ke,ZHANG Xiao-ning,WANG Duan-yi.A Measurement Method of Percent Voids in Coarse Mineral Aggregates in Asphalt Mixtures Based on Digital Image Processing Technique[J].Highway,2005(11):151-154. |
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| Authors: | XU Ke ZHANG Xiao-ning WANG Duan-yi |
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| Institution: | Road Research Institute, South China University of Technology, Guangzhou 510641, China |
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| Abstract: | Percent voids in coarse mineral aggregate in asphalt mixtures(VCA_(mix)) is one of the important volumetric properties of asphalt mixtures.The measurement of VCA_(mix) depends on transferring weight into volume by density for a long time.Due to the error of the transformation and the influence of asphalt absorption,it leads to deviation between calculation results and real results.In this paper,a method measuring VCA_(mix) based on digital image processing technique is presented.Coloured aggregates are used to distinguish the coarse and the fine aggregate and color threshold is used to segment the image in this method.The results show this method is more accurate. |
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| Keywords: | VCAmix digital image processing color aggregate |
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