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3D scaning with range camera in mining applications
2002 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

When you blast in the mountain, some of the rocks turn out to be to large for transport. To deal with this, rockbreakers are placed at the top of the mine shafts to crush these before transport. The reasons for having a rock breaker is to prevent large boulders to block the ore shafts, crushes or the filling station. This also gives a opportunity to discover unwanted objects such as rock bolts and other metal objects. Today it takes quite a lot of time to steer the rockbreaker arm into the right position. The operator also has to check every bucket emptied by the loader, on the grizzly. If the grizzly is empty, the operator gives a clear signal. There is not a range camera on the market today that can meet the requirement that are needed for scanning such a large area in such environment. The project consists of constructing a range camera, made of a CCD camera and a light projector, in order to get a 3D image over the rock. The report is describing the range camera and the possible setups and alterations for it. The image quality will vary a lot, so a discussion on how to filter the images in the most effective way is presented. Methods of visualization is also included. A complication is that some times the rock is not with the optimal position upwards. So finding the right angle of attack is important.

Place, publisher, year, edition, pages
2002.
Keyword [en]
Technology, Range camera, 3D, 3D image, laser camera, triangulation, rockbreaker, ellipsoidal reflector spotlight, mine, mining, boulder, Delaunay, mesh plot, gobo, visualize, 3D, visualization, scanning
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-43538ISRN: LTU-EX--02/338--SELocal ID: 168c0201-ab6a-445e-be3a-d5b88c4dbc6dOAI: oai:DiVA.org:ltu-43538DiVA: diva2:1016771
Subject / course
Student thesis, at least 30 credits
Educational program
Electrical Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

Open Access in DiVA

fulltext(1292 kB)33 downloads
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File name FULLTEXT01.pdfFile size 1292 kBChecksum SHA-512
cebea4eb4b483b341e67d4b905053f6248056353186e8af53c17771d0ceaad5b3ab5731c2fd3be4a3155bf563683d6836e69a76a3e367283d76a75dd6075e296
Type fulltextMimetype application/pdf

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Total: 33 downloads
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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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