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Seamless Automatic Projector Calibration of Large Immersive Displays using Gray Code
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Visual Information and Interaction.
2013 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Calibrating multiple projectors to create a distortion free environment is required in many fields e.g. simulators and the calibration may be done in a series different ways.

This report will cover an automatic single camera projector calibration algorithm.The algorithm handles multiple projectors and can handle projectors covering bigger field of view than a camera by supporting image stitching. A proof of concept blending algorithm is also presented. The algorithm includes a new developed interpolation method building on spline surfaces and an orientation calculation algorithm that calculates the orientation difference between two camera views.

Using the algorithm to calibrate, gives pixel accuracy of less than 1 camera pixel after interpolation and the relation between two views are calculated accurately. The images created using the algorithm is distortion free and close to seamless.

The algorithm is limited to a controlled projector environment and calibrates the projectors for a single viewpoint. Furthermore, the camera needs to be calibrated positioned in the sweet spot although it can be arbitrary rotated.

Place, publisher, year, edition, pages
2013. , 40 p.
UPTEC F, ISSN 1401-5757 ; 13032
Keyword [en]
Projector Calibration, Seamless, Automatic, Gray Code, Multiple Projectors, Blending, Image Stitching
Keyword [sv]
Projektorkalibrering, projektor, kalibrering
National Category
Engineering and Technology
URN: urn:nbn:se:uu:diva-207956OAI: oai:DiVA.org:uu-207956DiVA: diva2:650544
External cooperation
Sjöland & Thyselius
Educational program
Master Programme in Engineering Physics
Available from: 2013-09-23 Created: 2013-09-22 Last updated: 2013-09-23Bibliographically approved

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