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Risorse bibliografiche
Risorsa bibliografica obbligatoria
Risorsa bibliografica facoltativa
Scheda Riassuntiva
Anno Accademico 2017/2018
Scuola Scuola di Ingegneria Industriale e dell'Informazione
Insegnamento 097457 - VISION BASED 3D MEASUREMENTS
Docente Zappa Emanuele
Cfu 6.00 Tipo insegnamento Monodisciplinare

Corso di Studi Codice Piano di Studio preventivamente approvato Da (compreso) A (escluso) Insegnamento
Ing Ind - Inf (Mag.)(ord. 270) - BV (483) MECHANICAL ENGINEERING - INGEGNERIA MECCANICA*AZZZZ097457 - VISION BASED 3D MEASUREMENTS

Programma dettagliato e risultati di apprendimento attesi

Goals of the course

The course is aimed at studying the vision-based 3D measuring techniques by means of the analysis of the theory and immediate application of it in the development of 3D scanning prototypes in the laboratory. This hands-on approach allows the students to participate actively to the lessons. The first part of the course develops the basic concepts related to the image acquisition and processing techniques. These concepts are used in the second part of the course to develop prototypes of scanners working with different approaches. The course will include the description of many real applications of 3D vision systems developed by the professor and his staff in cooperation with other Universities and Companies.

 

Main topics of the course

  • Image acquisition techniques and systems: introduction to the image acquisition techniques, line scan and area scan sensors, CCD and CMOS technologies, frame grabbers, buses to connect digital cameras to the image processing units (USB, IEEE 1394, GigaEthernet, CameraLink). Smart cameras.
  • Image preprocessing: operators on single pixels, on image subsets and on the full image. Convolution operators and image transformation. 2D camera calibration to compensate for perspective and distortion due to the lens. 
  • Image processing algorithms for measurements: description and use of the state of the art image processing techniques to extract measurements from images: edge detection, blob analysis, pattern matching and geometric matching. 
  • 3D scanning of shapes. Theory of image generation: pinhole cameras, optical aberration modelling. Techniques for the calibration of stereoscopic system and algorithms for 3D measurements. Structured light scanners and Fourier Trasnform Profilometry.
  • 3D Digital image correlation: the digital image correlation for 3D shape recovery and for the estimation of 3D strain field. Techniques to enhance the accuracy of the measurement result in DIC. Effect of motion on scanning accuracy.
  • 3D data processing and storage: algorithms for point clouds processing, standard file formats for 3D data managment and storing (VRML, IGES, STL,…).

 

Note that the slides used during the lesson will be available for the students in advances. The slides contain all the information needed for the course. The support books listed in the references can be useful for further analysis of the topics but are not compulsory.


Note Sulla Modalità di valutazione

The students, alone or in small group of 2 or 3 people, will be asked to develop a project in the ambit of the course. The professor will assign the topic of the project also considering the main interest of the student. The professor, to offer the students the necessary support, will periodically review the development of the projects. The final exam will focus on the discussion of the project.


Bibliografia
Risorsa bibliografica facoltativaRichard E. Woods Rafael C. Gonzales, Digital Image Processing, Editore: Pearson, ISBN: 9789332570320
Risorsa bibliografica facoltativaHubert Schreier, Jean-Jos© Orteu, Michael A. Sutton, Image Correlation for Shape, Motion and Deformation Measurements, Editore: Springer US, Anno edizione: 2009, ISBN: 978-0-387-78746-6 http://link.springer.com/book/10.1007%2F978-0-387-78747-3
Note:

In particular chapter 5 is useful for the course.


Mix Forme Didattiche
Tipo Forma Didattica Ore didattiche
lezione
38.0
esercitazione
5.0
laboratorio informatico
0.0
laboratorio sperimentale
15.0
progetto
0.0
laboratorio di progetto
0.0

Informazioni in lingua inglese a supporto dell'internazionalizzazione
Insegnamento erogato in lingua Inglese
Disponibilità di materiale didattico/slides in lingua inglese
Disponibilità di libri di testo/bibliografia in lingua inglese
Possibilità di sostenere l'esame in lingua inglese
Disponibilità di supporto didattico in lingua inglese
schedaincarico v. 1.6.5 / 1.6.5
Area Servizi ICT
15/04/2021