Overall measurement system calibration method based on vision calibration and coordinate transformation

2015 
The invention provides an overall measurement system calibration method based on vision calibration and coordinate transformation. The overall measurement system calibration method comprises the following steps: calibrating internal parameters and external parameters of a camera; performing hand-eye calibration on the relationship Hrc between a turntable coordinate system and a camera coordinate system; calibrating the transformation relationship Hpr between the turntable coordinate system and a place coordinate system or the transformation relationship Hrg between the turntable coordinate system and a ground coordinate system; on the basis of the acquisition of the Hrg, the Hpr and the Hrc, unifying the four coordinate systems of a camera, a turntable, a place and the ground; controlling the turntable to shoot a target, and mapping related information about the target to a specific coordinate system by combining the information about turntable azimuth, pitch angle and lens focal length, thus realizing a scheduled mask. An overall automatic tracking and measurement system can be calibrated by adopting the method; during the tracking and measuring process, the measurement precision of the system is ensured, and effective guarantee is provided for flight safety.
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