CONSTRUCTION JOBSITE MONITORING WITH MULTIPLE VIDEO CAMERAS

该合作研究与开发（CR&D）项目的主要目标是创建一种基于视觉的新型原型，帮助hydro - quamesim监测建筑工地劳动力和设备资源的使用情况。目前，hydro - quemail主要依靠现场视察员的定期观察来手动进行现场监测。这种人工监控实践并不是在所有的建设项目中都可用。此外，它不能随时监控劳动力和设备资源。考虑到这些限制，hydro - quacimbec计划在工地安装多台录象机，以便利外地视察员的监测工作。在这个CR&D项目中创建的原型有望从这些摄像机拍摄的现场视频中自动检索劳动力和设备信息。它首先使用视频流生成工地的3D点云。然后，沿着时间线检测和跟踪点云中的建筑工人和设备。根据检测和跟踪结果，统计分析现场劳动力和设备资源的工作时间，并将其与现场工作区域相关联。通过这种方式，hydro - qu忧郁对每个工作区域的实际人工和设备成本有一个初步的了解，以便发现潜在的成本超支。与原型相关的主要好处有两个。首先，它将大大减少目前人工监测实践所需的人力和资金。此外，视频流监测可以帮助hydro - quamesim尽早发现设备和劳动力利用方面的潜在项目延误。

The main objective of this Collaborative Research and Development (CR&D) project is to create a novel vision-based prototype that could help Hydro-Québec monitor the use of labor and equipment resources at construction jobsites. Currently, Hydro-Québec mainly relies on the regular observations from field inspectors to manually perform jobsite monitoring. This manual monitoring practice is not available in all construction projects. Also, it could not monitor the labor and equipment resources all the time. Considering these limitations, Hydro-Québec plans to install multiple video cameras at the jobsites to facilitate the monitoring work of the field inspectors. The prototype created in this CR&D project is expected to automatically retrieve the labor and equipment information from the jobsite videos captured by these cameras. It first uses the video streams to generate the 3D point cloud of the jobsite. Then, construction workers and equipment in the point cloud are detected and tracked along the timeline. Based on the detection and tracking results, the working hours of the labor and equipment resources at the jobsite are statistically analyzed and associated with the jobsite work zones. This way, Hydro-Québec has a preliminary idea about the actual labor and equipment costs incurred in each work zone for the sake of detecting potential cost overruns. There are two major benefits associated with the prototype. First, it will significantly reduce the manpower and money required in the current manual monitoring practice. In addition, the monitoring with video streams could help Hydro-Québec detect potential project delays in terms of equipment and labor utilization as early as possible.