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Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array
Bibliography: pages 106-109.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Electrical Engineering
2016
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| _version_ | 1867614125123698688 |
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| access_status_str | Open Access |
| author | Reddy, Praven |
| author2 | De Jager, Gerhard |
| author_browse | De Jager, Gerhard Reddy, Praven |
| author_facet | De Jager, Gerhard Reddy, Praven |
| author_sort | Reddy, Praven |
| collection | Thesis |
| description | Bibliography: pages 106-109. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/22231 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:47:04.088Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Electrical Engineering |
| publisherStr | Department of Electrical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/22231 Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array Reddy, Praven De Jager, Gerhard Electrical Engineering Digital Image Processing Bibliography: pages 106-109. This thesis describes techniques for the correction of spatial noise artifacts in a mercury cadmium telluride infrared camera system. The spatial noise artifacts are a result of nonuniformities within the infrared focal plane detector array. The techniques presented dispense with the need for traditional temperature references, and provide nonuniformity compensation by using only the statistics of the moving infrared scene and motion of the camera assembly for calibration. Frame averaging is employed, assuming that all of the detector pixels will eventually be irradiated with the same levels of incident flux after some extended period of time. Using a statistical analysis of the camera image data, the correction coefficients are re-calculated and updated. These techniques also ensure that the calculated coefficients continually track the variations in the dark currents as well as temperature changes within the dewar sensor cooling vessel. These scene-based reference free approaches to the calculation of compensation coefficients in the infrared camera are shown to be successful in compensating for the effects of fixed pattern spatial noise. 2016-10-21T07:32:18Z 2016-10-21T07:32:18Z 1998 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/22231 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Electrical Engineering Digital Image Processing Reddy, Praven Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array |
| thesis_degree_str | Master's |
| title | Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array |
| title_full | Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array |
| title_fullStr | Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array |
| title_full_unstemmed | Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array |
| title_short | Fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array |
| title_sort | fixed pattern noise compensation in a mercury cadmium telluride infrared focal plane array |
| topic | Electrical Engineering Digital Image Processing |
| url | http://hdl.handle.net/11427/22231 |
| work_keys_str_mv | AT reddypraven fixedpatternnoisecompensationinamercurycadmiumtellurideinfraredfocalplanearray |