https://www.mdu.se/

mdh.sePublikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
FAULT DETECTION OF PROJECTION ON CURVED SURFACE
Mälardalens universitet, Akademin för innovation, design och teknik.
Mälardalens universitet, Akademin för innovation, design och teknik.
2022 (engelsk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
Abstract [en]

In this thesis a system that evaluates projection systems is designed and tested. The type of projection systems of concern feature display surfaces that are curved in two axes. The system uses a calibration image featuring evenly spaced circles. This image is projected onto the display surface. Photos of the projection, captured using a camera placed in the design eye position of the projection, are stitched into an equirectangular projection of the display surface. The resulting system identifies both absolute and relative pixel position errors of the projection by comparing the location of the projected circles with their intended location. The developed system can detect faults in systems projecting on curved surfaces. There are several sources of error in the resulting system. The panoramic stitching and is a minor source of error. The largest source of error is the Hough transform used to detect and locate circles in the projection. This transform is not very robust. In pixel perfect images the system returns perfect measurements, however, if images are captured by a camera, the Hough transform lacks accuracy. The largest measured measurement error for the absolute pixel position error is approximately 10.6 arcminutes. For the relative pixel position error the largest measured measurement error is approximately 0.85 arcminutes per degree. The developed system can be used to acceptance test projection systems as well as indicate needs for maintenance of them.

sted, utgiver, år, opplag, sider
2022. , s. 61
HSV kategori
Identifikatorer
URN: urn:nbn:se:mdh:diva-59299OAI: oai:DiVA.org:mdh-59299DiVA, id: diva2:1676070
Eksternt samarbeid
SAAB AB Aeronautics
Veileder
Examiner
Tilgjengelig fra: 2023-05-08 Laget: 2022-06-23 Sist oppdatert: 2023-05-08bibliografisk kontrollert

Open Access i DiVA

Fault_detection_of_projection_on_curved_surface(41886 kB)181 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 41886 kBChecksum SHA-512
480eb5c4e730f378655c7284812d1b679e928f7c687d4620ecc0dd5c3c11260186ff12c6781847cb3293b4953c1bf1ab0ca3c0e7b4b71d6a2e14e2e843f5f4e9
Type fulltextMimetype application/pdf

Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 181 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

urn-nbn

Altmetric

urn-nbn
Totalt: 222 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf