Title:
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POLAR MOTION STATION-WEBCAM CALIBRATION FOR SOLAR TRACKING |
Author(s):
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Miguel Romero, Rafael Lemuz, Carlos Guillén, Cesar Bautista, Irene Ayaquica, Daniel Valdés |
ISBN:
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978-972-8939-48-9 |
Editors:
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Yingcai Xiao |
Year:
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2011 |
Edition:
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Single |
Keywords:
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Solar tracking, motion station-camera calibration, surface fitting |
Type:
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Short Paper |
First Page:
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287 |
Last Page:
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291 |
Language:
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English |
Cover:
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Full Contents:
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click to dowload
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Paper Abstract:
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In this work we propose a calibration algorithm for a high precision solar tracking system. The main goal of the proposed system is to automatically direct a motion stage that continuously capture solar images where the sun appears in the center of the image. A calibration algorithm is proposed to accurately model the transformation from pixel displacements viewed by the camera to the angular parameters of the motion stage. A low cost solar tracking platform integrating a polar motion stage and a webcam is used to assess the accuracy of the proposed algorithm. Results are presented to show the feasibility of our approach to circumvent camera lens distortion and mechanical instabilities of the low cost tracking system. |
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