Wide-baseline Stereo Vision for Long-range Target Position Measurement
Stereo vision measurement,as a kind of passive detection technology,is widely used in the field of position measurement. Aiming at the problem that traditional stereo vision is limited in target position measurement in long-distance environment,a wide-baseline stereo vision long-distance target position measurement method is proposed. Based on the principle of three-point fixed-plane measurement,the mathematical model of position measurement is constructed,and the decoupling strategy of camera parameters is adopted to calibrate the required parameters of the measurement system;coop-erative targets that are easy to be identified in the long-distance scene are designed,and the targets are imaged with two cameras,and the resolution of target position under the long-distance environment is accomplished by calculating the three-dimensional spatial coordinates of the centroid of the cooperative targets. The experimental results show that at a distance of 75～85 m,the accuracy of this method is better than 0.5％,the root-mean-square (RMS) error in the X and Y directions is better than 7.3 mm,and the RMS error in the Z direction is better than 22.6 mm,which is effectively applicable to the application of target position measurement at long distances.
万方数据
维普
