VR Technology-Based Audio and Video System Design and Face Authentication Assisted Multi-Modal Data Model

Based on VR and 3D modeling technology, this paper studies the multi-modal identity authentication system of face recognition, and solves the problem that identity recognition is affected by distance. By analyzing the dynamic characteristics, static characteristics, and walking directions of pedestrians in a gait cycle, construct a long-distance identity authentication scheme based on gait; construct a short-distance identity authentication scheme based on multi-posture face detection and sparse representation of facial components Face recognition method. Combining gait and face recognition to realize distance-independent identity authentication, realizes the design of audio and video s system; simulation results show that the effect of this system and data model has increased by 7.2%