Change search
CiteExportLink to record
Permanent link

Direct link
Cite
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
  • rtf
Simplifying stereo camera calibration using M-arrays
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology.
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Digitization of objects in three dimensions, also known as 3D scanning, is becoming increasingly prevalent in all types of fields. Ranging from manufacturing, medicine, and even cultural heritage preservation. Many 3D scanning methods rely on cameras to recover depth information and the accuracy of the resulting 3D scan is therefore dependent on their calibration. The calibration process is, for the end-user, relatively cumbersome due to how the popular computer vision libraries have chosen to implement calibration target detection. In this thesis, we have therefore focused on developing and implementing a new type of calibration target to simplify the calibration process for the end-user. The calibration board that was designed is based on colored circular calibration points which form an M-array, where each local neighborhood uniquely encodes the coordinates. This allows the board to be decoded despite being occluded or partially out of frame. This contrasts the calibration board implemented in most software libraries and toolboxes which consists of a standard black and white checkered calibration board that does not allow partial views. Our board was assessed by calibrating single cameras and high FOV cameras and comparing it to regular calibration. A structured light 3D scanning stereo setup was also calibrated which was used to scan and reconstruct calibrated artifacts. The reconstructions could then be compared to the real artifacts. In all experiments, we have been able to provide similar results to the checkerboard, while also being subjectively easier to use due to the support for partial observation. We have also discussed potential methods to further improve our target in terms of accuracy and ease of use.

Place, publisher, year, edition, pages
2019. , p. 80
Series
IT ; 19064
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-397003OAI: oai:DiVA.org:uu-397003DiVA, id: diva2:1369898
Educational program
Master Programme in Computer Science
Supervisors
Examiners
Available from: 2019-11-13 Created: 2019-11-13 Last updated: 2019-11-13Bibliographically approved

Open Access in DiVA

fulltext(81900 kB)0 downloads
File information
File name FULLTEXT01.pdfFile size 81900 kBChecksum SHA-512
fffedc4ab2fa042d2a4bf7f07ec5c8f095e632053d4799a1f80b01995de008ba5b0bbfbb79a1cd425b772f077e833108364fd925f2d43d0e7b77e23f107d83d9
Type fulltextMimetype application/pdf

By organisation
Department of Information Technology
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 11 hits
CiteExportLink to record
Permanent link

Direct link
Cite
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
  • rtf