With outstanding features of high resolution and high acquisition rate, line-scan imaging holds great potentials for high-speed applications. This paper presents a stereo line-scan system for 3D shape measurement of fast moving objects. The principle and key technologies are addressed. The system setup and 3D imaging model are introduced first and the stereo matching scheme and calibration approach are described subsequently. The system is verified by experiments. The results demonstrate the validity and accuracy of the proposed system.
The flexible coordinate measurement system based on robot which is applicable to multi-model vehicle
is designed to meet the needs of online measurement for current mainstream mixed body-in-white(BIW)
production line. The moderate precision, good flexibility and no blind angle are the benefits of this
measurement system. According to the measurement system, a monocular structured light vision sensor
has been designed, which can measure not only edges, but also planes, apertures and other features.
And a effective way to fast on-site calibration of the whole system using the laser tracker has also been
proposed, which achieves the unity of various coordinate systems in industrial fields. The experimental
results show satisfactory precision of ±0.30mm of this measurement system, which is sufficient for the
needs of online measurement for body-in-white(BIW) in the auto production line. The system achieves
real-time detection and monitoring of the whole process of the car body's manufacture, and provides a
complete data support in purpose of overcoming the manufacturing error immediately and accurately
and improving the manufacturing precision.
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