Relationship evaluation of subject and dependence of construction site work based on alignment of motion data

Abstract

From the viewpoint of safety and quality in construction sites, it is not desirable that the motion of multiple workers are not coordinated. Previously, we proposed a method to evaluate the relationship of construction worker’s motion in videos. Specifically, the previous method calculated DTW distance of motion features based on body skeleton positions obtained by utilizing OpenPose. As a result, it became possible to quantitatively grasping whether multiple workers are aware of each other when performing work. On the other hand, the previous method have not yet achieved a quantitative understanding of the subjects and dependencies of coordinated motions. In this paper, it becomes possible to quantitatively understand the subjects and dependencies of coordinated motions by calculating an index that focuses on the time difference of the associated elements for the alignment results obtained by utilizing DTW. It is expeted that evaluation of the relationship between the subject and dependencies of coordinated work by the proposed method will lead to a quantitative understanding of the safety and quality of construction sites.