Calibration of dual resolution dual camera structured light systems,“ (2024)

Y. Yang, I. Bortins, D. Baldwin, and S. Zhang, “Calibration of dual resolution dual camera structured light systems,“ Optics and Lasers in Engineering, 182, 108472, (2024)

Abstract

This paper introduces a calibration framework designed for dual-resolution dual-camera structured light systems. The calibration process for each camera-projector pair adheres to a conventional pixel-wise calibration method for structured light systems. To align the two cameras' coordinate system, the method employs a white planar object and virtual feature points. These points are generated based on the dual-directional absolute phase maps obtained from each camera. By leveraging the pixel-wise calibration results from both single camera-projector pairs, this approach determines the geometric relationship between the camera coordinates via rigid transformation. Experimental results demonstrate the proposed method's high calibration precision for each camera-projector pair and the accurate alignment of coordinates between these two cameras.