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介绍了一种新型、高精度、实时伪彩色图像采集系统的原理、构成和特点。该系统采用１０ｂｉｔＡ／Ｄ转换器，使得高性能图像分析与处理成为可能。系统采样频率为１４．７５ＭＨｚ，对于标准ＰＡＬ制电视信号，可以保证采样后像素的横纵比为１∶１。由于采用最新ＥＰＬＤ编程技术，使得系统体积减小，可靠性显著提高。可输出标准ＰＡＬ制黑白全电视信号、ＲＧＢ分量彩色信号、Ｙ／Ｃ分量彩色信号及复合视频信号。该系统通过标准ＩＳＡ总线与计算机接口，帧存直接映射计算机内存地址空间，存取速度快。本系统特别适合于高精度的图像测量应用
The principle, composition and characteristics of a new type of high precision and real time pseudo color image acquisition system are introduced. The system uses 10bitA / D converter, making high-performance image analysis and processing possible. System sampling frequency of 14.75MHz, for standard PAL TV signal, you can ensure that the pixels after sampling aspect ratio of 1: 1. Thanks to the latest EPLD programming technology, the system size is reduced and reliability is significantly improved. Can output standard PAL black and white TV signal, RGB component color signal, Y / C component color signal and composite video signal. The system through a standard ISA bus and computer interface, frame memory directly mapped computer memory address space, access speed. The system is particularly suitable for high-precision image measurement applications