Flexible structured light system calibration method with all digital features

We propose an innovative method for single-camera and single-projector structured light system calibration in that it eliminates the need for calibration targets with physical features. Instead, a digital display such as a liquid crystal display (LCD) screen is used to present a digital feature pattern for camera intrinsic calibration, while a flat surface such as a mirror is used for projector intrinsic and extrinsic calibration. To carry out this calibration, a secondary camera is required to facilitate the entire process. Because no specially made calibration targets with real physical features are required for the entire calibration process, our method offers greater flexibility and simplicity in achieving accurate calibration for structured light systems. Experimental results have demonstrated the success of this proposed method. (c) 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Automated summary

The article introduces an innovative method for calibrating a single-camera and single-projector structured light system without the need for physical calibration targets. Instead, a digital display is used for camera calibration and a flat surface is used for projector calibration. The method requires a secondary camera to facilitate the process. The proposed method offers flexibility and simplicity in achieving accurate calibration for structured light systems, as demonstrated by experimental results.