Efficient and high-precise re-calibration method for structural light three-dimensional measurement system

The invention discloses an efficient and high-precise re-calibration method for a structural light three-dimensional measurement system. The method comprises the following steps: normalizing various image plane matching image point coordinates and using critical distance as the constraint to perform basic matrix solving, wherein the process can automatically reject the mismatched point or the point containing large error, thereby reducing the influence on the calibration precision by the noise; secondly, solving a scale factor by utilizing space field constraint, and importing feature size constraint or/and space relative distance constraint in a measurement space, and solving the scale factor according to the standard size or/and space relative distance and a measurement value, and endowing weight on the a multi-view measurement system according to each monocular scale factor and performing weighting to obtain a global scale factor, thereby improving the solving precision of the system local parameter and pr