Device and method for testing brake performances based on stereoscopic vision

The invention relates to a device and a method for testing brake performances based on stereoscopic vision, and belongs to vehicle performance testing road test equipment. The device reconstructs a vehicle body contour line three-dimensional coordinate according to vehicle body images shot by two cameras and by utilizing a computer image processing technique to obtain motion trails of a vehicle in the brake process; and speed, braking deceleration and braking deviation displacement are calculated in real time, so that vehicle braking performances are evaluated. The device comprises two DH-HV3150 UC cameras, two stepping motors, two tensioning wheels, a camera support, an industrial control computer, a millimeter-wave radar, three calibrated drones of a same specification and the like. According to the device and the method for testing brake performances based on stereoscopic vision, motion trails of the vehicle in the brake process can be calculated in real time. The method design idea is unique, the testing accuracy and the repeatability are good, and further, the structure is simple, and the installation is convenient. Research results have certain theoretical values and economic values and have good application and promotion prospects.