Study The Effects Of Camera Misalignment On 3d Measurements For Efficient Design Of Vision-Based Inspection Systems
ARTIFICIAL INTELLIGENCE: METHODS AND APPLICATIONS(2014)
摘要
Vision based inspection systems for 3D measurements using single camera, are extensively used in several industries, today. Due to transportation and/or servicing of these systems, the camera in this system is prone to misalignment from its original position. In such situations, although a high quality calibration exists, the accuracy of 3D measurement is affected. In this paper, we propose a statistical tool or methodology which involves: a) Studying the significance of the effects of 3D measurements errors due to camera misalignment; b) Modelling the error data using regression models; and c) Deducing expressions to determine tolerances of camera misalignment for an acceptable inaccuracy of the system. This tool can be used by any 3D measuring system using a single camera. Resulting tolerances can be directly used for mechanical design of camera placement in the vision based inspection systems.
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关键词
Camera calibration, Vision based inspection systems, Camera misalignment and Regression models
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