【作者】 刘奕；

【导师】 王景存；

【作者基本信息】 武汉科技大学 ， 计算机应用技术， 2005， 硕士

【摘要】 设计独立于PC机平台的视频图像采集、处理系统是数字视频理论与图像处理理论与嵌入式技术的综合运用。研制出这样的系统并使其具有功能强、性价比高是本毕业设计课题立意之所在。本文对视频信号采集系统进行了硬件设计和软件开发。 使用基于RTOS的开发给嵌入式系统设计引入的一个直接问题,此问题就是如何使具备一定硬件独立性的实时操作系统在特定的用户硬件板上顺利运行而不必对RTOS本身进行太多改动。在现代RTOS设计中,普遍采用的方法是板级支持包(BSP)。本论文以一个图像采集硬件平台为例,详细研究了WinCE下BSP基本概念。然后对实时操作系统WinCE下BSP开发的过程进行了详细分析,内容包括内存配置、串口驱动设计、时钟驱动设计和中断控制器驱动设计等,在此基础上讨论了BSP与RTOS的接口问题及如何设置BSP中的相关参数以使系统整体性能达到最优。 本文描述的设计思想、设计方法、运用的手段和工具及给出的实际硬件和软件实现对彩色视频图像采集和处理的研发具有实用意义。在本系统硬件平台的基础上,配上适当的应用软件,可方便地应用于安保监控、指纹、文物及首饰鉴定等领域,具有广阔的应用前景。更多还原

【Abstract】 It’s very significant to design a video sample, processing system which is independent of PC platform. Designing the system needs to grasp video theory, image processing theory and embedded microprocessor technology. The main objective of this thesis is to accomplish the research and design of the system characterizing its powerful function and high performance-to-price ratio. Hardware design and software development the video sample system are shown in the thesis.One of main problems is directly involved with the current embedded system project based on development of RTOS. The question is how to well run the real-time system on user’s hardware board whilst the RTOS can not be largely modified. Among such RTOS-based systems, Board Support Package (BSP) is also an important factor. Then the thesis studies the basic concept of BSP for WinCE in case video sample hardware platform and analyzes detailedly the process of BSP development, including memory configuring, drive design of UART, clock and interrupt controller. The thesis expounds the interface between BSP and RTOS and explains that how to optimize the whole system performance through setting the correlative parameters.All the ideas, methods, tools and the realizations of hardware and software discussed in the dissertation are described in researching and developing the color video sample, processing system, which is significant in practicality. Based on the hardware platform, equipped suitable software, it can be easily applied in many fields, such as safety and supervise monitor, fingerprint, cultural relic and jewelry authentication.更多还原