红外亚成像关键技术研究
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摘要
红外制导技术是当今精确制导武器的一个研究热点,而双色红外玫瑰线扫描亚成像制导技术是红外制导技术的重要发展方向。本文以国防重点预研课题-毫米波/红外双模导引头为背景,重点对双色红外玫瑰线扫描亚成像系统的几个关键技术进行了研究:
     基于对红外亚成像机理及其目标识别跟踪特征的分析,提出了红外亚图像目标识别跟踪模型。
     对红外亚成像目标识别算法及其软件进行了研究,给出了具体的红外亚成像目标识别软件流程和部分关键模块的实现说明。
     对红外成像的压缩技术进行了研究,将SPIHT算法导入目标检测系统,模拟结果显示图像数据存储空间得到极大地压缩。
     基于SPIHT算法,提出了ROI编码方法和针对识别算法的知觉调整算法,其中ROI算法可在关注区域获得质量良好的图像;知觉调整算法可获得更多的边界信息,二者均可提高系统的目标识别率。
The infrared guiding technique is the research focus of precise guiding weapon and the infrared sub-imaging guiding technique has become an important developing branch of infrared guiding technique. The study about the key techniques of infrared sub-imaging has been carried out in the following aspects:
    Based on the principle of rosette scan sub-imaging and the analysis of the target recognition and tracking features, the model of infrared sub-imaging target recognition and tracking is built up in this dissertation.
    The target recognition algorithm of infrared sub-imaging has been studied and its software has been developed. The flow diagram and implement of several important module of target recognition software is brought forward in this dissertation.
    Compression codec has been studied and SPIHT codec is introduced into the image guidance system. The simulated result shows that the memory space is maximally compressed.
    Based on SPIHT, the ROI codec and perceptually-tuned algorithm aiming at recognition system are put forward in this dissertation. The former improve probability of target recognition through advancing image quality of region of interest, but the latter through attaining more edge information.
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