Inspection of cracks is an important process for properly monitoring and maintaining a building. However, manual crack inspection is time-consuming, inconsistent, and dangerous (e.g., in tall buildings). Due to the development of open-source AI technologies, the increase in available Unmanned Aerial Vehicles (UAVs) and the availability of smartphone cameras, it has become possible to automate the building crack inspection process. This study presents the development of an easy-to-use, free and open-source Automated Building Exterior Crack Inspection Software (ABECIS) for construction and facility managers, using state-of-the-art segmentation algorithms to identify concrete cracks and generate a quantitative and qualitative report. ABECIS was tested using images collected from a UAV and smartphone cameras in real-world conditions and a controlled laboratory environment. From the raw output of the algorithm, the median Intersection over Unions for the test experiments is (1) 0.686 for indoor crack detection experiment in a controlled lab environment using a commercial drone, (2) 0.186 for indoor crack detection at a construction site using a smartphone and (3) 0.958 for outdoor crack detection on university campus using a commercial drone. These IoU results can be improved significantly to over 0.8 when a human operator selectively removes the false positives. In general, ABECIS performs best for outdoor drone images, and combining the algorithm predictions with human verification/intervention offers very accurate crack detection results. The software is available publicly and can be downloaded for out-of-the-box use at: https://github.com/SMART-NYUAD/ABECIS
翻译:对裂缝的检查是适当监测和维护建筑物的一个重要过程,然而,人工裂缝检查是耗时、不连贯和危险的,因为人工裂缝检查是耗时、不连贯和危险的(例如高楼)。由于开发开放源码的AI技术、现有无人驾驶航空飞行器(UAVs)的增加以及智能手机摄像机的可用性,因此有可能使建筑物裂缝检查过程自动化。这项研究为建筑和设施管理人员开发了一个容易使用的、免费和开放源码的自动建筑大楼外部裂缝检查软件(ABECIS),使用最先进的电路分解算法查明混凝土裂缝隙,并产生定量和定性报告。由于开发了开放源码的AIA技术、在现实世界条件下现有无人驾驶航空飞行器和智能手机摄像机的图像,对ABSIS进行了测试。根据算法的原始输出,在受控的实验室环境中使用商用无人驾驶飞机进行室内裂缝检测实验 (1) 0.686,在建筑工场使用智能手机进行室内裂缝检测的0.186,在大学校园进行室内部裂缝查探查时,在使用最准确的室进行室检查时,在进行室室室室室室室室室室室室室室室室室室室室室室室室室内检查时使用最佳的检测,使用最佳的检测,在使用最佳机测测测测测测,在使用最佳的机内,在使用AMA舱内,在一般机校内,在进行。