CAJ | 학술논문

经过研究给出了不均匀光照的路面裂缝图像识别的详细算法。算法采用多窗口中值滤波进行图像平滑，既能去除图像的噪声点，又较好地保留了裂缝的边缘信息；使用背景子集图像插值校正法进行灰度校正，有效地克服了不均匀成像对后期图像分割的影响；采用otsu阈值分割、形态学去噪及连通区域标记完成裂缝图像分割；选用连通区域个数、投影特征和分布密度3个参数完成裂缝分类；最后提取裂缝长度、宽度和破损面积等裂缝参数。实验结果显示分类准确率为94％，线状裂缝长度误差均值为7．2％，宽度误差均值为11．3％，非线状裂缝的面积误差均值为9．6％，表明这一方法有效、可靠。
경과연구급출료불균균광조적로면렬봉도상식별적상세산법。산법채용다창구중치려파진행도상평활，기능거제도상적조성점，우교호지보류료렬봉적변연신식；사용배경자집도상삽치교정법진행회도교정，유효지극복료불균균성상대후기도상분할적영향；채용otsu역치분할、형태학거조급련통구역표기완성렬봉도상분할；선용련통구역개수、투영특정화분포밀도3개삼수완성렬봉분류；최후제취렬봉장도、관도화파손면적등렬봉삼수。실험결과현시분류준학솔위94％，선상렬봉장도오차균치위7．2％，관도오차균치위11．3％，비선상렬봉적면적오차균치위9．6％，표명저일방법유효、가고。
An algorithm to automatically detect and classify pavement cracks is presented in this paper .First ,the multi-window median filter is used ,which can not only remove the noises but also reserve crack information .Second ,the background subset interpolation method is applied to dealing with non-uniform illumination in the post-segmentation step . After that ,the otsu threshold segmentation method ,morphologic method ,and connected components marking method are used sequentially to segment the crack image .Furthermore ,the number of connected components ,projection feature , and distribution density are selected to classify the cracks .Finally ,the main parameters for crack ,such as length ,width , and area ,etc .,are calculated .The results show that the classification can be as accurate as 94% ,with the crack's length error of 7 .2% ,width error of 11 .3% ,and area error of 9 .6% ,which demonstrates that the mehod is effective and relia-ble .