视频图像采集电路的设计

电气自动化论文编号:ZD529 论文字数:18316,页数:39，有开题报告，任务书，文献综述

目 录

第一章 视频图像处理基础知识 1
 1.1 人眼的视觉 1
 1.2 图像视频知识 2
 1.3 视频采集卡简介 2
第二章 视频图像采集系统方案论证 3
 2.1 摄像机原理与选型 3
 2.1.1 CCD工作基本原理 3
 2.2 实时视频图像采集卡 7
 2.3 视频图像采集系统的设计 8
 2.3.1 系统原理 8
 2.3.2 系统组成 9
 2.4  技术方案与系统结构 11
 2.4.1 视频采集与数字化模块 11
 2.4.2 视频帧缓存模块 12
 2.4.3 实时视频处理模块 13
 2.4.4 目标缓存模块 14
第三章 视频图像采集系统及其组成 15
 3.1  AL422B存储电路的设计 15
 3.1.1  AL422B 15
 3.1.2 数据锁存模块设计 18
 3.2 可编程视频信号输入处理器SAA7111 21
 3.2.1 SAA7111总述 21
 3.2.2  SAA7111A片子的功能及其应用 21
 3.2.3 结构原理 24
 3.2.3.1 SAA7111的结构原理 24
 3.2.3.2 模拟输入处理及控制 25
 3.2.3.3 芯片连接应用图 27
 3.3 SAA7111与锁存器74HC574的接口 28
 3.4  接口芯片简介 28
 3.4.1 PCI 9030接口芯片 29
 3.4.2  局部设计 29
第四章 小结与致谢 31
参考文献 32
附录(电路设计图) 33
附录2  SAA7111设计电路 34

摘  要：本论文主要介绍进行实时图像信息获取的图像采集卡的分析与设计,从由摄像机、图像采集电路、存储电路、接口电路和计算机几个主要部分介绍并设计视频图像采集电路。 主要由菲利浦的数字视频解码器SAA7111A、视频存储器FIFO、锁存器PCF74HC574和单片机组成。整个卡的工作，是实时采集分辨率为720×576的完整图像。
 本课题是进行实时图像信息获取的视频采集电路的设计：由CCD摄像机得到模型的模拟信号，经A/D转换后形成数字信号，然后存入存储器FIFO中，最后将采集到的图像信息传送给主机软件系统进行高级处理（三维重建）。锁存器对转换后的数字信号进行锁存，单片机通过I2C总线完成对SAA7111A芯片的初始化。
关键词：视频图像；SAA7111A；图像采集；3DLCS；I2C；FIFO

 The design of video image capture circuit
ABSTRACT：What the thesis is mainly introduced is the analysis and design of the card of image collection. The card is used to capture pictorial information at any time. It respectively introduces the pickup camera, the circuit of image collection, the store circuit, the interface circuit and the major parts of computer, and the collective circuit of VIDEO IMAGE is designed. It mainly consists of the Phillips’digital video decoder—SAA7111A、video memory FIFO、flip-latch PCF74HC574 and single chip microcomputer. The whole system is to collect integrated images whose resolving power is 720×567 an any time.
 Its chief purpose is that the model signals, picked up by CCD pick up camera, are transformed by A/D from simulation to digital form, then written in frame memory FIFO, at last the pictorial information collected is transmitted to the software system of main engine in which advanced processing is made (Three dimensional rebuilding). Flip-latch earmarks the digital signals for storage, and the one-chip computer finishes initializing the chip SAA7111A through I2C bus.
KEYWORDS: VIDEO IMAGE;SAA7111A; MAGE SAMPLING;3DLCS;I2C;FIFO