路面裂缝检测是路面检测的重要组成部分。针对传统裂缝检测易受到路面纹理及光照条件等干扰因素影响问题，进行了线结构光三维检测系统在裂缝检测方面的应用研究。其中，针对当前路面三维形貌表示方法不能很好地分离实际路面中裂缝细节信号和道路本身复杂的波动信号，提出一种将轮廓线相对拟合直线的高度作为深度值拼接成裂缝深度图像的方法。这种方法很好地克服了获得路面数据中的路面复杂的波动信号影响，突出了裂缝信号，更有利于后续裂缝提取。%Pavement crack detection is an important part of pavement detection. Because the traditional crack-detecting technique suffers from the influencing lactors of pavement markings,shadow and light condition,this paper studies the application of three-di￣mensional structured light detection system in its crack-detection. During studying the representation method of the three-dimension￣al shape of the pavement,this paper finds that the current methods cannot be used to keep the crack signal wel separate from com￣plex wave signa in the actual pavement. So it presents a method that the height between the original contour line and fitting straight line is used as the depth value of the crack depth image. This approach can be wel used to overcome the impact of complex wave signal of the pavement contour in the obtained data,highlight the crack signal and help the subsequent steps to detect the cracks in the depth image.
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