视频监控_毕业论文

视频监控毕业论文

目录

目录............................................................................................................................................... I 摘要............................................................................................................................................... I II Abstract ........................................................................................................................................... I V 第一章绪论.. (1)

1.1 研究背景及现状 (1)

1.1.1 研究背景 (1)

1.1.2 视频监控的现状 (1)

1.2 研究目的和意义 (2)

1.3 本论文主要工作 (3)

1.4 论文总体结构 (4)

第二章视频采集编码系统的硬件开发平台 (5)

2.1 硬件平台综述 (5)

2.2 硬件模块介绍 (5)

2.2.1 ARM11处理器介绍 (5)

2.2.2 摄像头介绍 (8)

2.3 内核、文件系统及各驱动移植 (10)

2.3.1 Linux内核的移植 (10)

2.3.2 Linux 文件系统移植 (12)

2.3.3 Linux设备驱动 (13)

2.3.3.1 Linux设备驱动的简介 (13)

2.3.3.2 摄像头设备驱动 (15)

2.3.3.3 MFC模块的驱动 (17)

2.4 本章小结 (19)

第三章H.264视频编码标准 (20)

3.1 H.264标准概述 (20)

3.2 H.264编码新特性 (20)

3.2.1 帧内预测编码 (20)

3.2.2 帧间预测编码 (21)

3.2.3 整数变换和量化 (22)

3.2.4 熵编码 (22)

3.3 H.264码流结构分析 (23)

3.4 H.264网络传输适应性 (23)

3.5 本章小结 (25)

第四章视频采集与编码的软件设计 (26)

4.1 系统总体介绍 (26)

4.2 基于V4L的视频采集设计 (27)

4.2.1 V4L标准的介绍 (27)

4.2.2 V4L支持的数据结构及其用途 (27)

4.2.3 视频采集流程 (29)

4.3 H.264编码设计 (34)

4.4 本章小结 (37)

第五章结束语 (38)

5.1 总结 (38)

5.2 工作展望 (39)

参考文献 (40)

致谢 (42)

翻译 (43)

译文 (43)

H.264/A VC适合无线视频传输的特征及功能 (43)

摘要

随着电子信息技术、网络技术、图像处理等技术的飞速发展，嵌入式无线视频监控技术应运而生。基于嵌入式技术的无线视频监控以其灵活性、高集成性、便捷性等诸多优点必将取代现有的有线视频监控。

本文针对视频监控的实际需求，结合嵌入式技术、图像处理技术，设计并实现了一种可靠性高、成本低的基于ARM11的嵌入式视频采集及压缩系统，它是视频监控的前端，是无线视频监控的一个子系统。论文首先描述了视频监控系统研究的背景，分析了国内视频监控系统的现状和发展趋势，并阐述了视频监控系统研究的目的和意义。然后，介绍了新一代视频压缩标准H.264的技术特点，详细阐述了H.264出色的压缩效率和良好的网络适应性，并进一步研究了H.264标准的编码特性和码流结构。最后，提出了嵌入式视频监控系统的软、硬件总体架构，并逐步对硬件平台和软件模块设计进行了选择和优化。其中，根据视频数据采集以及压缩处理的需要选择摄像头和微处理器，搭建好硬件平台。在软件设计方面，首先完成了嵌入式系统的交叉开发环境搭建，然后完成了在开发板上操作系统内核、文件系统和设备驱动的移植，最后完成了Linux下基于V4L的视频采集和基于H.264的视频压缩编码。

关键词：嵌入式系统，ARM11，S3C6410，V4L,H.264

Abstract

With the development of electronic information technology, network technology and image processing technology, embedded wireless video monitoring technology appears.In the future,Wireless video monitoring system ,with many advantages such as agility,integration,convenience and so on,will replace existing wired video monitoring system inevitably.

Aiming at actual demand of video monitoring,this paper designs and realizes a reliable and cheap embedded video capturing and compression system based on ARM11, with the combination of embedded technology and image processing technology.This system is the front end of video monitoring and a subsystem of wireless video monitoring system.This paper firstly describes the background of video monitoring system study, analyzes the status and development trend of video monitoring system at home and mainly expounds the purpose and significance of video monitoring system study.Secondly, this paper introduces technical features of the newest video-coding standard---H.264, discusses higher coding efficiency and better adaptability to various networks of H.264 in detail,and makes a further study on the feature and stream structure of H.264. Finally, this paper proposes the general frames of both software and hardware of embedded video monitoring system, and gradually chooses and optimizes the design of hardware platform and software modules. According to the need of picture capturing and video encoding, I choose appropriate camera and microprocessor to build a hardware platform.During the software design process,I firstly finish the building of cross-development environment, then the transplant of embedded Linux, and finally the development of Linux driver programs, and the development of video capturing application based on V4L and video encoding application based on H.264.

Key Words:Embedded system, ARM11, S3C6410, V4L, H.264