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Secondly, we want to thanks our supervisor Anna Runemalm, she is really kind, nice and patient. In the process of the project, we have met many problems and she always help us, when we have no idea about our project, she gives good help for us.
Thirdly, we want to appreciate Appelgren Anders, when we try our experiments, he gives us lot of help for the equipment and the thoughts of our test.
Fourthly, we want to thanks University West to give us such a good chance to try our best to do this thesis project.
Then, we want to appreciate the company AvenPallen trust us and give us this chance to have this thesis project.
Finally, we want to thank ourselves, although there also are some shortcuts, we also try our best to do this project and have such a nice experience.
Contents
Summary i
摘要ii
Preface iii
Symbols and glossary vi
1 Introduction 1
1.1 Background 1
1.2 Problem description 1
1.3 Scope 1
2 Methodology 1
3 Theory 2
3.1 Mechanical inspection 2
3.2 Optical inspection 3
3.2.1 The optical alarm 3
3.3 Vision technique 3
3.3.1 The introduction of vision technique 3
3.3.2 The type of application 4
3.4 3D laser scanning 5
3.4.1 The type of 3D laser scanning technology 5
4 Design 5
4.1 Mechanical inspection system 6
4.1.1 The suggested mechanical inspection 6
4.2 Optical inspection system 7
4.2.1 The suggested optical inspection system 7
4.3 Suggested vision technique 8
4.3.1 The suggested vision technique system 8
4.4 Suggested 3D laser scanning 9
4.4.1 The suggested laser scanning system 9
4.5 Improve system 10
4.5.1 Improvement of optical inspection system 11
4.5.2 Improvement of vision technique system 12
4.6 Comparison of four systems 13
5 Evaluate of system performance 14
5.1 The test of optical inspection system 15
5.2 The test of shadow inspection system 17
6 Image analysis 21
6.1 Direct measured method 21
6.2 Software measured method 21
7 Results 24
7.1 The results of optical inspection system 24
7.2 The results of the shadow inspection system 25
8 Conclusions and future work 26
References 27
Appendices.Appendix
A. First appendix
B. Second appendix
C. Third appendix
Symbols and glossary
CCD camera: Charge Coupled Device camera.
PLC: Programmable Logic Controller.