期刊
SENSORS
卷 21, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/s21030765
关键词
optical sensor; laser sensor; calibration; 3D reconstruction
This paper presents a method for calibrating multi-camera and multi-laser 3D triangulation systems, utilizing a conical calibration object and stepped line patterns for calculating camera-laser homographies. The experiments demonstrate a precision of 0.1 mm for the proposed system, showing its effectiveness in calibrating scanners for revolving surfaces.
This paper describes a method for calibrating multi camera and multi laser 3D triangulation systems, particularly for those using Scheimpflug adapters. Under this configuration, the focus plane of the camera is located at the laser plane, making it difficult to use traditional calibration methods, such as chessboard pattern-based strategies. Our method uses a conical calibration object whose intersections with the laser planes generate stepped line patterns that can be used to calculate the camera-laser homographies. The calibration object has been designed to calibrate scanners for revolving surfaces, but it can be easily extended to linear setups. The experiments carried out show that the proposed system has a precision of 0.1 mm.
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