1、At the same time, the features of the same object in two-dimensional plane and three-dimensional space are extracted, and technical means such as rotation, scaling, and projection are used to obtain the matching relationship between two-dimensional features and three-dimensional features, thereby calculating the transformation matrix of the space and plane coordinate systems.

2、Using a combination of line laser and plane camera, it combines the technology of laser three-dimensional imaging to capture corner features and plane camera to capture plane peripheral features. Through calibration, the transformation matrix of the three-dimensional and two-dimensional coordinate systems is obtained, and the features in the three-dimensional coordinate system are Projected into a two-dimensional coordinate system.