Determination of Interactions With Predefined Volumes of Space Based on Automated Analysis of Volumetric Video

One or more image and/or depth cameras capture images and/or depths of a physical environment over time. A computer system processes the images to create a static 3-dimensional (3D) model representing stationary structure and a dynamic 3D model representing moving or moveable objects within the environment. The system visually overlays the dynamic 3D model over the static 3D model in a user interface. Through the user interface, a user can create virtual spatial interaction sensors, each of which is defined by a volume of space within the environment. A virtual spatial interaction sensor can be triggered, based on analysis of the dynamic 3D model by the computer system, whenever a moveable object within the environment intersects the defined volume of the sensor. Times and durations of intersections can be logged and used for process refinement.