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

Martin Vonheim Larsen; Trym Haavardsholm; Kim Mathiassen

doi:10.1117/12.2573611

20 September 2020 In-operation calibration of clock-bias and intrinsic parameters for pan-tilt-zoom cameras based on keypoint tracking

Martin Vonheim Larsen, Trym Haavardsholm, Kim Mathiassen

Author Affiliations +

Proceedings Volume 11538, Electro-Optical Remote Sensing XIV; 115380D (2020) https://doi.org/10.1117/12.2573611
Event: SPIE Security + Defence, 2020, Online Only

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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Citation Download Citation

Martin Vonheim Larsen, Trym Haavardsholm, and Kim Mathiassen "In-operation calibration of clock-bias and intrinsic parameters for pan-tilt-zoom cameras based on keypoint tracking", Proc. SPIE 11538, Electro-Optical Remote Sensing XIV, 115380D (20 September 2020); https://doi.org/10.1117/12.2573611

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