The development of systems based on the projecttion of laser stripes is very interesting under the education point of view. Students must learn about active triangulation principles, imaging techniques, programming techniques, and metrology.
In addition, computer vision is required for the calibration of the camera projector pair. This article reports examples of this type of projects.
The first one is the development of a laser slit system for the measurement of the central profile of small buttons. The system has been completely developed in LabView.
The students are Emanuele Ferrari and Paolo Bellandi. In this presentation one can learn how they worked for the development of the demonstrator.
The second project deals with the development of a system based on the projection of two laser stripes and the use of a single camera. The aim is to add redundancy to decrease the influence of shadow, which inherently decrease the performances of the measurement.
Two Ph. D. students are being working at this project: Paolo Bellandi and Gianluca Cavagnini. The first results are available in the presentation.