The aim of the course is to give students the basic elements to understand the most important aspects, applications and problems of 3D vision systems. The 3D topics include the foloowing arguments:
Active triangulation based systems;
Passive triangulation systems;
Light coding methods;
Calibration methods of the camera-projector optical head;
Whole field profilometers;
Laser slits;
Interferometers;
Velocimeters;
Vibrometers;
Interferometers for calibration.
Students will learn basic concepts in the following fields:
3D sensor technologies;
Design techniques for 3D sensors;
Market available devices;
3D sensor applications: in manufacturing, medicine and cultural heritage
Principle of measurement of surface roughness based on light scattering. Standards. Typology of optical sensors for industry.
Triangulation principle. Passive and active sensors. Single point, multi-point and whole field sensors. Projection of structured light. Camera calibration techniques. Calibration of the camera-projetor pair. Light coding techniques.
Telemeters: measurement principles. Typology of sensors. Long range scanners. Industrial applications.
Other sensors: optical micrometers, wavefront splitting, Biris pronciple.
INTERFEROMETERS
Measurement principles.
Interferometers for the measurement of distance, velocity and vibration.
Couse Material: tutorial and presentations downloadable from the e-learning site. The theory about Interferometers is from ?Optics, 4Th edition', author: Eugene Hecht, Eds: Addison Wesley
Classroom and laboratory lessons: programming techniques in the LabView platform are used to experimentally verify the theory.
The course is oriented to a practical implementation of the theory. Theory and implementation are mixed-up and directly experienced in the laboratory. Students have two options to make the exam. The former is based on (i) a written exam, with questions of theoretical and practical nature, and (ii) the design and the implementation of a simple vision system. The latter consists of the design, the implementation and the test of a medium-complexity 3D vision system.
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