發(fā)布時(shí)間：2018-03-18 18:43

  本文選題：紅外焦平面陣列　切入點(diǎn)：FPGA　出處：《南京理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著紅外成像技術(shù)的快速發(fā)展,紅外成像系統(tǒng)在軍事和民用上都發(fā)揮著重要作用。本文從我國(guó)軍事應(yīng)用的實(shí)際要求出發(fā),就“制冷型紅外成像系統(tǒng)電路研究”這一項(xiàng)目,利用國(guó)產(chǎn)的制冷型紅外焦平面陣列探測(cè)器,以小型化、低功耗、實(shí)時(shí)性為目標(biāo),設(shè)計(jì)一套紅外圖像處理系統(tǒng)。本文在介紹國(guó)內(nèi)外紅外成像技術(shù)發(fā)展應(yīng)用的基礎(chǔ)上,分析了紅外圖像的特點(diǎn)和影響紅外圖像質(zhì)量的因素,探討了非均勻校正、盲元替換和圖像增強(qiáng)等圖像處理算法,為系統(tǒng)的設(shè)計(jì)和研發(fā)提供了理論指導(dǎo)。針對(duì)探測(cè)器與紅外圖像特點(diǎn)和項(xiàng)目的實(shí)際要求,設(shè)計(jì)了基于現(xiàn)場(chǎng)可編程門陣列(FPGA)的小型化、低功耗硬件成像電路,其中包括焦平面探測(cè)器驅(qū)動(dòng)電路、模擬信號(hào)調(diào)理電路、A/D數(shù)據(jù)采集電路、基于FPGA的數(shù)字信號(hào)處理電路、視頻編碼電路、測(cè)溫電路和電源電路。在硬件電路的基礎(chǔ)上,配合算法模塊,完成了對(duì)紅外圖像非均勻性校正、盲元替換、圖像增強(qiáng)等處理,得到了符合要求的紅外圖像。最終,完成整個(gè)制冷型小型化紅外成像系統(tǒng)的調(diào)試與測(cè)試。得到了清晰的紅外圖像,并且整個(gè)紅外成像系統(tǒng)體積小、功耗低、信號(hào)處理速度快,基本達(dá)到了項(xiàng)目要求的目標(biāo)。
[Abstract]:With the rapid development of infrared imaging technology, infrared imaging system plays an important role in both military and civil applications. A set of infrared image processing system is designed with the aim of miniaturization, low power consumption and real time using domestic refrigerated infrared focal plane array detector. The development and application of infrared imaging technology at home and abroad are introduced in this paper. The characteristics of infrared image and the factors affecting the quality of infrared image are analyzed, and the image processing algorithms such as non-uniform correction, blind element replacement and image enhancement are discussed. It provides theoretical guidance for the design and development of the system. According to the characteristics of detectors and infrared images and the actual requirements of the project, a miniaturized, low-power hardware imaging circuit based on FPGA (Field Programmable Gate Array) is designed. It includes focal plane detector driving circuit, analog signal conditioning circuit and A / D data acquisition circuit, digital signal processing circuit based on FPGA, video coding circuit, temperature measuring circuit and power supply circuit. With the algorithm module, the processing of infrared image nonuniformity correction, blind element replacement, image enhancement and so on is completed, and the infrared image that meets the requirements is obtained. The whole refrigeration miniaturized infrared imaging system is debugged and tested. A clear infrared image is obtained, and the whole infrared imaging system is small in size, low in power consumption, fast in signal processing, and has basically reached the goal of the project.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN219

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本文編號(hào)：1630834