【作者】 鱼军；

【导师】 张二虎；

【作者基本信息】 西安理工大学 ， 信号与信息处理， 2008， 硕士

【摘要】 作为信息传媒的载体之一,印刷品在人们的生活中有着不可或缺的地位。在现今数字信息技术和计算机多媒体技术高速发展的时代,人们对印刷品的质量有了更高的要求。随着计算机直接制版工艺的发展,印刷过程的质量控制对检测技术的要求也不断提高。印版网点数据检测仪器的研发,使快速精确检测印版网点数据成为可能,对印刷复制过程的规范化、数据化和提高印刷质量具有重大意义。在数字信息技术和网络技术高速发展的后PC时代,嵌入式系统已经广泛渗透到科学研究、工程设计、军事技术等领域以及人们日常生活的方方面面中。并且,嵌入式系统以其特有的优点,使其应用在各个方面。为此,本课题提出把嵌入式应用于网点检测方面,目的开发设计出基于ARM嵌入式的网点检测系统。本课题研究了基于ARM嵌入式的网点检测系统的设计与实现方法,构建了基于ARM芯片的嵌入式LINUX操作系统,在其基础上,用USB摄像头作为图像采集设备,实现网点的图像采集功能,再利用数字图像处理技术解决印版网点图像的分割(二值化)等处理,从而进行印版网点面积率、网点圆形度、加网角度等的计算,实现印版网点的检测系统。同时,采用MINIGUI实现了系统界面。实验结果表明这种设计切实可行,完全可以达到预期的系统开发的目的,能够完成网点图像检测的功能。本文从印版网点检测出发,研究了基于ARM嵌入式的网点检测系统的开发,对网点检测系统方面进行研究探索。同时,也是数字图像处理技术在网点检测系统中的应用的研究。把嵌入式LINUX操作系统引入网点检测方面,也是嵌入式系统在印刷工业方面的一个开发应用,对相关方面的研究与开发有重要的参考价值。更多还原

【Abstract】 As one of the medium which carriers the information and media, printing product is so important in our daily life. And the high speed developer of the digital information and multimedia technology, make people want to have more better qualities, As the detection and measuring technique develop speedily, it made it is possible to design new instrument that is used on detection and measuring, and it has the great signification. As the post-PC times, along with the high developer of the information and networking, The Embedded operation system is extensively using in the area of science research, engineering design, military and our daily life. Also with the special advantages, The Embedded operation system is almost using everywhere. This paper studied the Embedded LINUX operation system based on the ARM chip. On this system we make a series of function using the digital image processing technology, such as calculating the dot area percentage, image partition and so on. Then we made the GUI using on this system based on MINIGUI.This papers studied on the image processing technique using in the Embedded operation system, and the dot detection and measuring .It is the using of the digital image processing technique on the dot detection and measuring, and also the Embedded operation system using on the printing area, It is a explore of the Embedded operation system using on such research and has importantly reference value on such area.更多还原