| 摘要 |
The present invention provides a system and method for generating camera calibrations for a vision system camera along three discrete planes in a 3D volume space, which uses at least two (e.g. parallel) object planes at different known heights. For any third (e.g. parallel) plane of a specified height, the system and the method then automatically generate calibration data for the camera by interpolating/extrapolating from the first two calibrations. This alleviates the need to set the calibration object at more than two heights, speeding the calibration process and simplifying the user′s calibration setup, and also allowing interpolation/extrapolation to heights that are space-constrained and are not readily accessible by a calibration object. The calibration plate can be calibrated at each height using a full 2D hand-eye calibration or using a hand-eye calibration at the first height and then at a second height with translation to a known position along the height (e.g. Z) direction. |
