In-operation calibration of clock-bias and intrinsic parameters for pan-tilt-zoom cameras based on keypoint tracking

Author
Larsen, Martin Vonheim
Haavardsholm, Trym Vegard
Mathiassen, Kim
Date Issued
2020-09-20
Keywords
Kamera
Kalibrering
Sensorer
Bildebehandling
Permalink
http://hdl.handle.net/20.500.12242/2797
DOI
10.1117/12.2573611
Collection
Articles
Description
Larsen, Martin Vonheim; Haavardsholm, Trym Vegard; Mathiassen, Kim. In-operation calibration of clock-bias and intrinsic parameters for pan-tilt-zoom cameras based on keypoint tracking. Proceedings of SPIE, the International Society for Optical Engineering 2020 ;Volum 11538:115380D. s. 1-17
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Abstract
We propose a method for jointly estimating intrinsic calibration and internal clock synchronisation for a pantilt- zoom (PTZ) camera using only data that can be acquired in the field during normal operation. Results show that this method is a promising starting point towards using software to replace costly timing hardware in such cameras. Through experiments we provide calibration and clock synchronisation for an off-the-shelf low-cost PTZ camera, and observe a greatly improved directional accuracy, even during mild manoeuvres.
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