Technique of Unifying the Coordinates of Multi-Sensor Visual Measuring System

Each sensor of multi-sensor visual measuring system has its own local three dimension coordinate system and implements relative measurement, but to process the measurement results, its measuring data must be transformed into a global coordinate system, that is to say, the local sensor system must be unified into the global coordinate systems. A technique of unifying the coordinates of multi-sensor visual measuring system based on theodolite coordinate measuring system and targets is introduced. Two unification methods, direct and indirect methods, are detailed and testified by experiments.