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Evaluation and Measurement Method for Texture Depth of Exposed-aggregate Cement Concrete Pavement Surface Based on Digital Imaging Technique

机译：基于数字成像技术的裸露骨料水泥混凝土路面纹理深度评价与测量方法

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摘要

In order to study the surface characteristics of exposed-aggregate cement concrete pavement, the measurement mechanism of surface texture depth was analyzed by using digital image technique. Based on the principle of least square and Table curve 3D software, two-dimensional digital image of road surface was reconstructed into three-dimensional space surface and a method of evaluating and measuring pavement surface texture depth was put forward. With this method, digital image samples were calculated and the results were compared with the results of conventional measurement method. The results indicate that exposed-aggregate cement concrete pavement has excellent road characteristics; there is a good correlation between the digital image technique and the traditional sand patch method and the relative error is less than 7 percent. Thus, the digital image technique is feasible in evaluating and measuring pavement surface texture depth.
机译：为了研究裸露骨料水泥混凝土路面的表面特性，采用数字图像技术分析了表面纹理深度的测量机理。基于最小二乘原理和Table Curve 3D软件的原理，将路面的二维数字图像重构为三维空间表面，提出了一种评价和测量路面表面纹理深度的方法。使用这种方法，可以计算数字图像样本，并将结果与​​常规测量方法的结果进行比较。结果表明，裸露集料的水泥混凝土路面具有优异的道路特性。数字图像技术与传统的沙斑方法之间有很好的相关性，相对误差小于7％。因此，数字图像技术在评估和测量路面表面纹理深度方面是可行的。

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