Weighted bundle adjustment method in optical measurement system

The measuring accuracy of optical measurement system can be improved by reasonable weighted bundle adjustment technique. In this paper, weighted bundle adjustment techniques have been reviewed, and then a robust weighted bundle adjustment has been provided. In every iteration, image points with big error were removed firstly by statistical analysising the residual error, then sectional weighted bundle adjustment have been carried out considering the significance level of correction. Real experiments show that the method we provided can remove image points with big error effectively, and can achieve more robust results than Helmert weighted method, selecting weight iteration method and backprojection weighted method.