| Along with the development of technology and the advance of social productivity, the technology of TV and computer have been mostly method of modern information social spread and dealing with information. Video image addition is one of the multimedia technology application fields; it is the associative production of the TV technology and computer technology. The technology of drawing beeline machine is a part of video signal processing. It is used in the multimedia surveillance system, the real time surveillance system, etc.It adds beeline information to video image, then the monitor display the image which is added beeline.It needs control system control produce flow in industry production, and adjust at any moment in order to ensure the process of production. The drawing beeline machine is used to monitor the process of production real time. In control equipment, the drawing beeline is very important, it display the object which is controlled and compare with the standard to adjust the object real time.Based on the analysis of the theory of image overlapping, this dissertation designed a drawing beeline machine. Under the control of the microprocessor, the system can draw aclinic and upright beeline on video pictures. So it can contrast with object intuitively. This system provides friendly graphic interface making users' control easier and more flexible.This system's final aim is to carry out require below:(1)The adding signal must be synchronization with image signal. Display the adding content stably in screen.(2)Confirm the position and precision of the beeline.(3)The adding content can move around and fluctuate in screen in some scope, and the lightness of adding content can adjust exterior.The drawing beeline machine designed this dissertation has the advantage of small space, high reliability, easily operation.This dissertation describes the scheme design of the system, the circuit design of each part, the function and principle of CMOS chip. |
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