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交互式自动报靶系统的设计与实现

Design and Implementation of Interactive Automatic Target-scoring System

【作者】 葛启东

【导师】 余仲秋;

【作者基本信息】 解放军信息工程大学 , 光学工程, 2010, 硕士

【摘要】 自动报靶系统实现了射击训练中示靶、判靶、报靶、成绩记录的自动化,从技术上避免了人工报靶方式带来的主观性和安全隐患,有效提高了射击训练的效率和质量。然而,现有的自动报靶系统研究成果不同程度地存在结构复杂、便携性差、成本高昂、缺乏交互性等多方面的不足,不能很好地满足部队野外射击训练的需求。本文针对部队射击训练的实际需求,结合嵌入式技术、图像处理技术以及声源定位技术,提出了交互式自动报靶系统的设计方案。该方案以轻武器实弹射击训练为研究对象,目标是研制一套便携性强、性能稳定可靠并具有一定交互功能的自动报靶系统。其实现思路是:分别设计图像采集模块和交互终端,二者通过网络接口进行数据传输,共同完成靶面图像的采集、处理工作。图像采集模块置于靶板前下方用于采集靶面图像,交互终端是具有输入输出功能的终端设备,置于射击位置由射击人员使用,实现自动示靶、判靶、报靶以及其它用户功能。其设计特点是:采用嵌入式系统设计方法,将报靶系统小型化成为手持式终端设备,进而增强系统的便携性和交互性。论文的主要工作反映在以下几个方面:1、研究了基于ARM微处理器的嵌入式系统设计原理,结合军用报靶系统的应用特点,提出了交互式自动报靶系统的总体设计方案,并详细论述了各个模块的软硬件实现方法;2、研究了Linux平台下使用Qt/Embedded设计开发GUI交互程序的方法,设计完成了自动报靶系统的应用程序,软件的主要功能包括图像采集传输、图像校正、弹孔识别、重叠弹孔区分、靶心提取、靶值计算等;3、研究了弹孔成像的特点,提出了基于颜色相似性度量的弹孔识别方法,该方法能够对与背景颜色差异大于2%的弹孔目标准确识别;4、提出了根据目标几何特征进行重叠弹孔区分的算法,该算法能够有效区分重合度低于70%的重叠弹孔,提高了系统的识别能力;5、对声源定位原理进行了研究,并将其运用到了靶位辨认功能的实现中,有效提高了系统的自动化程度。

【Abstract】 Automatic Target-scoring System can display, inspect, report and record the target automatically which avoids the subjective and waste problem of human-aided target report and improves the efficiency of training. However, there are many disadvantages in existing system, such as complicated structure, high cost, low adaptability and bad-interaction, so it can not satisfy the need of field-traing environment.Aiming to the actual requirements of target-scoring system, combining with Embedded Technology, Image Processing Technology and Sound Localization Technology, a target-scoring system called Interactive Automatic Target-scoring System is designed and implemented which has good portability、high reliability and interactive characteristic. This system implements these functions of display, inspection and report of the target by using image acquisition and processing system. Based on the design principle of embedded system technology, the system is designed to be a hand-hold terminals equipment, which can improve the portability and interactivity of system is enhanced in this way.The main works of this thesis are as follows:1. After studying the design principle of Embedded System using ARM micro process, the whole frame of IATSS is put forward, and the hardware and software of all modules are detailed; 2. After studying the method of designing GUI interactive program with the Qt/Embedded in Linux platform, The program of Automatic Target Scoring System is implemented. The main functions of this program include image acquisition and communication, image rectification, the bullet holes recognition, serried bullet-holes partition and scoring, etc; 3. After analysing the imaging characteristics of bullet holes, a new method of recognizing the bullet holes based on color similarity measurement is proposed, which can recognize the bullet holes which has 2% differences between background, but also meets the color visual characteristics of human; 4. A new algorithm of distinguishing serried bullet holes based on geometry property is presented, which can distinguish the serried bullet the degree of overlap is less than 70%; 5. Sound Localization Technology is studied which is applied to resolve power for shot location, in this way, the automation level of the system is raised highly.

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