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三维内窥镜立体图像处理技术研究

Research on the Technology of Stereo Picking up Images and Display

【作者】 王爱国

【导师】 卢栋;

【作者基本信息】 长春理工大学 , 电子与通讯, 2007, 硕士

【摘要】 随着成像技术和计算机处理技术的发展,二维图像远不能满足人们追求立体视觉的要求。尤其在医学领域,对手术用的显示系统要求日益提高,从而推动了立体摄像显示技术的研究与发展。本文正是针对这种需求借助立体电视技术的成果,结合计算机立体显示技术,设计了一整套立体摄像显示系统。本文简要地介绍了立体视觉的基本原理和模拟实现手段,着重论述了采用双CCD摄像系统和立体图像形成及处理系统的硬件实现方法,在微处理器CPU的控制下,通过I~2C总线完成对视频信号处理的技术,并应用场存储器,低速存入高速取出的方法,将视频信号场周期20ms压缩为10ms。应用时分制的原理读取一路信号的奇数场信号和另一路信号的偶数场信号合成立体信号。合成后的立体视频信号再经过D/A数模转换和后级视频信号处理,图像将达到三维立体的效果。而后通过液晶调制屏与无源偏振眼镜相结合使观察者获得立体感受。本项技术已达到了实用的程度,目前已用于医疗器械方面。不仅可以用于立体观察而且还可以进行工程检测,在视频娱乐和教育领域本技术也有很大的应用前景。

【Abstract】 With the development of the imaging technology and computerprocessing technology, the two-dimensional picture can not be satisfied bypeople who pursue the stereoscopic vision. Especially in the field of medicine,the request of display system which is used in operation is enhancedincreasingly. So the research and development of stereo picking up imagesand display technology is impelled. This paper is designed to be a whole setof stereo picking up images and display system precisely in view of this kindof demand with the aid of stereo television technology achievement andcombining the computer stereo display technology.In this paper, the fundamental of stereoscopic vision and the realizationmeans is introduced briefly. It is discussed in detail that using of the doubleCCD picking up images system and the hardware realization method ofstereo images forming and processing system.Under the microprocessor CPUcontrol, it completed video signal processing technology through the I~2C mainline. And though the method of memory and the low speed stores and highspeed takes out,it compressed the video signal field cycle 20ms into10ms.Two groups video signals will separately pass through the D/Aconverter and the latter level video signal processing again,and applicatetime-system principle synthesising three-dimensional signal,the picture willachieve the three dimensional effect. Then the stereo feeling is gained by theobserver through combining the LCD modulation screen with the passivepolarized glasses.This technology has reached to the applied degree and been used inmedical appliance at present. It can be used not only in the stereo observationbut also in the project detection. And it has the much application foregroundin the field of video entertainment and education.

【关键词】 立体图像双CCD摄像机图像压缩
【Key words】 stereo-imagetwo-CCD cameraimage compression
  • 【分类号】TP391.41
  • 【被引频次】2
  • 【下载频次】248
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