In response to the problem of the small field of vision in 3D reconstruction. a 3D reconstruction system based on a catadioptric camera and projector was built by introducing a traditional camera to calibrate the catadioptric camera and projector system. Firstly. the intrinsic parameters of the camera and the traditional camera are calibrated separately. https://lockdownsecuritycanada.shop/product-category/turn-signal-video-interface/