VR Simulator for Scene Investigation Based on Real 3D Panoramas
摘要
Virtual reality (VR) is widely used in various fields, including training law enforcement officers. The paper discusses the directions and advantages of using VR for training law enforcement officers, provides a list and description of VR applications developed for training. This paper describes the development of a virtual reality simulator designed for crime scene inspection using 3D panoramic reconstruction. The functional requirements for the VR application are presented, the system architecture is described, including the VR application, RESTful Web API and Web client. A description and requirements for each component of the developed simulator are provided separately. Sequence diagrams and precedents for the cadet and educator on using the VR simulator and Web client are provided. A list of technical support for the VR simulator is provided, as well as tools for creating 360 photographs and a method for converting them into a 3D panorama. Methods for recognizing speech in a VR headset and creating inspection reports based on audio and photo comments are presented. The structure of the database is presented, which stores information about scenes, as well as data on the passage of cadets’ task of inspecting a specific scene of an incident, including fragments of photographs taken using a VR headset and comments recorded to photographs, both voice and recognized and converted into text. The article contains the results of testing the simulator at the Volgograd Academy of the Ministry of Internal Affairs. As a result of the tests, the effectiveness of using the simulator was confirmed. At present, the Academy of the Ministry of Internal Affairs uses the developed simulator, including at the state final certification.