摘要
以CCD传感器扫描图像的频率和MC9S12DG128单片机A/D端口采集数据的速度为出发点,阐述了用I/O端口查询的方式来采集经二值化处理后的视频信号的方法,解决了A/D端口采集速度慢而致使图像像素低的问题.该方法可提高数据的采集精度和处理速度,并且具有更高的可靠性和抗噪能力,提高了系统的整体性能.
Based on the scanning frequency of CCD sensor and speed of data collection from the A/D port of Mcgs12DG128 mieroeontroller, the method using I/O port of the MCU to collect video signals after the proeess by binaryzation was described, which can greatly enhance the speed. As a result, accuracy of data collecting has higher reliability and anti-noise capability and capacity of the whole system are improved. Experiments show that this method has greater superiority for its good stability, convenience in processing data and easy control of cars＇ driving.
出处
《成都大学学报（自然科学版）》
2009年第4期322-325,共4页
Journal of Chengdu University（Natural Science Edition）
