一种低成本的视频数字图象获取方法在微计算机系统中的实现
A method for Video Digital Image Acquisition at Low Cost and its Implementation in Microcomputer System
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摘要: 本文阐述一种用二值影象组合装配获取视频数字图象的方法.按照这一方法,用标准电 视摄象机和八位微处理器实现了一个价廉而灵活的微计算机图象处理系统.文中给出了系统 视频图象输入接口结构框图及软件操作命令.该系统获取图象的最大能力为256×256,十六 灰度级;具有两种可以灵活选择的程序控制方式;以每灰度级40ms的速度输入局部图象,或 以每灰度级1800ms的速度(采用2MHz的8080A MPU)获取整幅图象.Abstract: In this paper, a method for acquiring video digital image by combining and assembling binary images is described. An inexpensive and flexible microcomputer image processing system has been implemented by means of the method, using a standard telecamera and an 8-bit microprocessor. Its hardware is introduced in terms of a blockdiagram description and some operating commands of the software are given. At its maximum capability, the system is able to acquire a 256×256 image with 16 gray levels, and two programmable control modes can b selected flexibly: acquiring local 128×128 pixels in 40 msec per gray level or total 256×256 pixels when used with a 2MHz 8080A MPU--in 1800 msec per gray level on an image.
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