The accuracy analysis of point-point distance calculated by 3D coordinates;

This paper states the principles of rapid obtaining the 3D coordinates of each point in an image based on the spectrometry.

The effect of the optical error of the cat’s eye retro-reflector on the laser tracking 3D coordinates measuring system and the main sources of the optical error of the cat’s eye retro-reflector are introduced.

In the laser tracking 3D coordinate measuring system,the self-calibration should be made before measurement that would take effect mostly on the result.

The working principle,main functions and characteristics of a laser tracking 3D coordinate measuring system are introduced;the design of laser tracking interferometer which constructs the system is dissertated.

By the total station 3D coordinate method, measuring 3D coordinate of random four points on the surface of ball, the 3D coordinate of ball center can be got after calculation.

The three-dimensional coordinates of the workpieces were worked out.

By GPS positioning, we can obtain the three-dimensional coordinates of stations: latitude B, longitude L and ellipsoidal height H.

Computation and programming of three-dimensional coordinate transform;

In order to examine the setting conditions of the bar-mat reinforcement shell of a spherical cinema and its offset deviation from the designed spherical center,a three-dimensional coordinate system of the framework joints was set up.

Large-scale murals lofting is involved in the lofting of spatial modeling and three-dimensional coordinate.