基于数字图像处理技术的沥青路面构造深度评价方法研究

发布时间：2018-05-21 12:59

本文选题：道路工程 + 数字图像处理技术　；参考：《合肥工业大学学报(自然科学版)》2017年10期

【摘要】：文章依托济祁高速公路安徽省砀山段沥青混凝土路面施工项目,以单幅图像恢复物体形状原理计算沥青路面的数字图像构造深度,以灰度差来表征路面的凸起和凹下的高度差值,确定去噪预处理和灰度图像处理方法,研究了不同光照强度和不同拍摄高度对沥青路面数字图像构造深度的影响,提出了沥青路面数字图像构造深度的计算方法,并建立了沥青路面铺砂法构造深度与数字图像构造深度之间的关系模型。研究结果表明:在自然光条件下,9:00时刻拍摄数字图像的构造深度普遍大于其他时刻0.03~0.06mm,11:00和13:00拍摄数字图像的构造深度与其他时刻的一致性较差,最大差值为0.03 mm,而在15:00和17:00时3个测点的差值均在0.01mm范围内,一致性较好,建议在15:00~17:00进行数字图像的采集;拍摄高度在50~70cm范围内,数字图像构造深度变化幅度较小,差值介于0.02~0.04mm,推荐拍摄高度为60cm;沥青路面铺砂法构造深度与数字图像构造深度存在一定的线性相关,关系模型拟合效果良好,相关性系数平方为0.85。基于数字图像处理技术的沥青路面构造深度计算方法,实现了程序交互界面化,为实时连续检测评价沥青路面构造深度施工质量水平提供了条件。
[Abstract]:Based on the construction project of asphalt concrete pavement in Dangshan section of Jiqi Expressway in Anhui Province, this paper calculates the digital image construction depth of asphalt pavement by using the principle of restoring object shape by single image. The difference of elevation between convex and concave pavement is represented by gray difference. The methods of pre-processing and grayscale image processing are determined. The influence of different illumination intensity and shooting height on the construction depth of digital image of asphalt pavement is studied. This paper presents a method for calculating the depth of digital image structure of asphalt pavement and establishes a model of the relationship between the depth of sand laying method and the depth of digital image structure of asphalt pavement. The results show that the construction depth of the digital image taken at 9: 00 is generally greater than that of the other time (0.030.06mm-1: 00 and 13:00) under natural light, and the consistency between the depth of construction of the digital image taken at 9: 00 and 13:00 is worse than that at other times. The maximum difference is 0.03 mm, but at 15:00 and 17:00, the difference between the three measuring points is within the range of 0.01mm and the consistency is good. It is suggested that the digital image should be collected at 15: 00 or 17: 00. The height of the shooting is within the range of 50~70cm, and the variation of the depth of the digital image structure is relatively small. The difference is between 0.02 mm and 0.04 mm and the recommended shooting height is 60 cm. There is a certain linear correlation between the depth of asphalt pavement sand paving method and the depth of digital image structure. The fitting effect of the relationship model is good and the square of correlation coefficient is 0.85. The calculation method of asphalt pavement structure depth based on digital image processing technology realizes the interactive interface of the program and provides the condition for real-time continuous inspection and evaluation of the construction quality level of asphalt pavement structure depth.
【作者单位】：重庆交通大学土木工程学院;安徽省交通控股集团有限公司;河北交通职业技术学院土木工程系;
【基金】：安徽省交通科技基金资助项目(Ahjtkj20130022) 河北省科技计划资助项目(16211249) 河北省高等学校科学技术研究重点资助项目(ZD2017226)
【分类号】：U416.217

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