High-precision calibration method for multi-view-structure-based optical system

The invention discloses a high-precision calibration method for a multi-view-structure-based optical system. A bundle adjustment model based on a plane distance constraint is constructed by using control points in a planar calibration object and an observation value correction process is constrained by using accurate distance information between control points, so that the parameter correction precision is improved. With a projection point as a calibration point, a true value based on a plane distance constraint adjustment model is obtained according to the error-free characteristic of the pixel point coordinate of the projection point, thereby providing a reference for observation value correction. During the adjustment process, the spatial coordinate of the projection point is corrected to reduce the influence the spatial position error of the projection point on the calibration accuracy and improve the calibration accuracy of the multi-view-structure-based optical system. Meanwhile, since the method only n