【作者】 邹伟；

【导师】 曹丹华；

【作者基本信息】 华中科技大学 ， 物理电子学， 2006， 硕士

【摘要】 随着经济的飞速发展,人们的生活水平不断提高,安全防范意识不断增强。近年来逐渐出现了视频监控系统,视频监控系统以其直观性、实时性、可靠性等优点,在安防领域受到了高度的重视。本文主要研究基于DSP的视频人体侦测系统的算法与软件实现。系统包括四个模块:人体识别模块、图像压缩模块、文件管理模块、以及人机接口模块。在分析实时监控系统图像序列特性的基础上,完成了快速高效的运动人体检测算法设计;在研究和分析常用目标描述方法的基础上,建立了可靠的人体特征描述体系;通过对大量特定场景下运动人体特征的分析,归纳出运动人体特有的特征参量函数关系式,建立了运动人体识别的数学模型;设计了高效可靠的重点区域设防算法以及运动人体跟踪算法;利用图像压缩编码技术,实现了现场图像的JPEG压缩编码;针对NAND Flash存储器的特性,设计并实现了基于NAND Flash的文件管理系统;利用键盘和显示器,设计并实现了方便、实用的人机接口模块。在CCS编译环境下,利用C语言及汇编语言编程实现了所有算法及模块,并对软件进行了优化,最大程度的提高了程序的运行效率,完成了高效可靠的系统软件设计。在多种情况下对系统进行了测试,实验测试表明:基于DSP的视频人体侦测系统能够快速准确的识别入侵者,并在异常情况下进行报警,对于非人因素造成的影响具有较强的抗干扰能力;系统所有模块具有高效性和实用性。实验系统运行稳定、可靠。更多还原

【Abstract】 With the rapid development of economy, people’s standard of living has improved, and the consciousness of security is increasing. Recently, video surveillance system has been developing quickly. Video surveillance system is the most favorite because of its prominent characteristics such as intuitive displaying, real-time performance and reliability.Author is engaged in designing the video surveillance system of human detection based on DSP. It involves man-machine communication module, human detection module, JPEG image compress module and file management module.Based on analyzing the characteristics of image sequences in the real-time surveillance system, a fast and efficient algorithm of moving objects detection is accomplished. Based on studying and analyzing typical objects describing methods, a reliable human character describing system is established. After analyzing intensively the characters of moving human in the specific scene, the equations of character parameters are concluded and the mathematic model of moving human detection is set up. Reliable and efficient algorithm of important area fortification and moving human tracking is designed. Using the JPEG format, the image data is compressed. Based on analyzing the characteristics of NAND Flash memory, an efficient file management system is accomplished. Using the key buttons and monitor, a convenient man-machine communication module is accomplished. All the modules are programmed in C language and assembly language in the CCS compiler.Tested in various circumstances, the results of the experiments show that the video surveillance system of human detection based on DSP can recognize the inbreaking man exactly and quickly, and give an alarm at an abnormal instance. It has the strong anti-jamming ability to the interference caused by non-human factors. All the modules function well. The experiments show that the system is efficient and reliable.更多还原