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
Automatic detection of surface defects
2007 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

A commonly occurring problem when manufacturing panels in certain polymeric composites is the occurrence of pores in the surface. At SICOMP AB there is a project with the aim of developing a system that can detect these pores that are not necessarily visible to the human eye. This thesis presents a method for processing the measurement data in order to have the system produce high level results such as position and size of detected pores. The measurement method is based on observing how a liquid applied to the surface evaporates. It uses the fact that complete evaporation will take longer time in the pores than elsewhere since liquid will have gathered there. The proposed processing method continuously determines what areas were recently wet. In data from these areas the pores will be detectable and therefore it is saved for post processing. For the post processing a simple linear filter and thresholding was found to be sufficient. The method has been implemented in a prototype system where it has proved to work well.

Place, publisher, year, edition, pages
2007.
Keyword [en]
Technology, Bildbehandling, Laserfotografering, Kompositmaterial
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-47154ISRN: LTU-EX--07/130--SELocal ID: 4bc0fdfb-f058-4592-924f-f838e7951ac9OAI: oai:DiVA.org:ltu-47154DiVA: diva2:1020473
Subject / course
Student thesis, at least 30 credits
Educational program
Computer Science and Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

Open Access in DiVA

fulltext(380 kB)29 downloads
File information
File name FULLTEXT01.pdfFile size 380 kBChecksum SHA-512
ad6081a0576c802c2667cf394466dc7c7e51cd873183622d509a5fabd9111b9c6279f88cc6e435648044e0d179a4117b724e6523b7db6b1daa135815e27bb687
Type fulltextMimetype application/pdf

Search outside of DiVA

GoogleGoogle Scholar
Total: 29 downloads
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: 6 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