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320×240 적외선 배열검출기를 이용한 고분해능 열상 신호처리기 구현
홍석민,유위경,윤은숙 한국군사과학기술학회 2006 한국군사과학기술학회지 Vol.9 No.2
This paper describes the design principles and methods of electronic processor for thermal imager with 320×240 staring array infrared detector. For the detector's nonuniformity correction and excellent image quality, we have designed the multi-point correction method using the defocusing technique of the optics. And to enhance the image of low contrast and improve the detection capability, the new technique of histogram processing has been designed. Through these image processing techniques, we have developed the high quality thermal imager and acquired a satisfactory thermal image. The result of MRTD (Minimum Resolvable Temperature Difference) is 0.1℃ at 4 cycles/mard.
송인섭,유위경,윤은석,홍영철,홍석민 대한전자공학회 1994 전자공학회논문지-B Vol.b31 No.1
This paper describes the design principles and methods of electronic processor for thermal imager with the SPRITE detector, operating in the 8-12 micron band. The thermal imager consists of a optical scanner containing the detector and an electrical signal processor. The optical scanner utilizing rotating polygon and oscillating mirror, is 2-dimensional serial/parallel scan type using 5 elements of the detector. And the electronic processor has pre-processing of 5 chnanel's thermal signal from the detector, and performs digital scan conversion to reform the parallel data stream into serial analog data compatible with conventional RS-170 video. Through the designed electronic processor, we have acquired a satisfactory thermal image. And the MRTD (Minimum Resolvable Temperature Difference) is 0.5$^{\circ}$K at 7.5 cycles/mm.
홍석민,유위경,윤은숙,Hong Seok Min,Yu Wee Kyung,Yoon Eun Suk 한국군사과학기술학회 2004 한국군사과학기술학회지 Vol.7 No.4
This paper has presented to the design results of the analog and digital signal processor for the 2nd generation thermal imaging system using $480\times6$ infrared focal plane array In order to correct non-uniformities of detector arrays, we have developed the 2-point correction method using the thermo electric cooler. Additionally, to enhance the image of low contrast and improve the detection capability, we developed the new technique of histogram processing being suitable for the characteristics of contrast distribution of thermal imagery. Through these image processing techniques, we obtained a high qualify thermal image and acquired good result.