Data Normalization of Single Camera Visual Measurement Network System

With the development of visual measurement system, the visual measurement system of single camera which applied in the imaging theory of optical feature points, it has been widespread used in the modern production. Due to the limit of the environment in scene, the visual measurement system of single camera could not measure the shield between the measured objects each other. Focus on this problem, present a kind of the the knowledge of measurement network based on the visual measurement of single camera, set up the measurement network system via the multi-control points. Measure the optical feature points in every network control point via the visual measurement system of single camera; Normalize the measured coordinates into the same world coordinate system, then get the global data, and achieve the overall measurement; Apply in the three coordinate measuring machine(CMM) to have the simulation experiment, the result indicates that the maximum absolute tolerance between the normalization coordinates via the center of point set and the ones measured by CMM directly is 0.058mm; But the one between the coordinate repeatedly measured at the position of one network control point is 0.066mm; So the data normalization has the advantage of more high precision.