Calibration of a Stereo Radiation Detection Camera Using Planar Homography
| Autor: | Soon-Yong Park, Pathum Rathnayaka, Seung-Hae Baek |
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| Rok vydání: | 2016 |
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Article Subject
Stereo cameras business.industry Computer science Epipolar geometry ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Stereopsis Control and Systems Engineering Camera auto-calibration 030220 oncology & carcinogenesis lcsh:Technology (General) lcsh:T1-995 Computer vision Artificial intelligence Electrical and Electronic Engineering business Instrumentation Stereo camera Computer stereo vision Camera resectioning Homography (computer vision) |
| Zdroj: | Journal of Sensors, Vol 2016 (2016) JOURNAL OF SENSORS |
| ISSN: | 1687-7268 1687-725X |
| DOI: | 10.1155/2016/8928096 |
| Popis: | This paper proposes a calibration technique of a stereo gamma detection camera. Calibration of the internal and external parameters of a stereo vision camera is a well-known research problem in the computer vision society. However, few or no stereo calibration has been investigated in the radiation measurement research. Since no visual information can be obtained from a stereo radiation camera, it is impossible to use a general stereo calibration algorithm directly. In this paper, we develop a hybrid-type stereo system which is equipped with both radiation and vision cameras. To calibrate the stereo radiation cameras, stereo images of a calibration pattern captured from the vision cameras are transformed in the view of the radiation cameras. The homography transformation is calibrated based on the geometric relationship between visual and radiation camera coordinates. The accuracy of the stereo parameters of the radiation camera is analyzed by distance measurements to both visual light and gamma sources. The experimental results show that the measurement error is about 3%. |
| Databáze: | OpenAIRE |
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