摘要
介绍了机载偏振成像系统中的 3路 CCD相机同步控制 PCI图像采集卡的工作原理 ,详细阐述了图像数据采集系统的硬件结构设计和图像采集卡的驱动编程方法 ,介绍了为实现高速图像数据传输需求所采用的 DMA、多线程和双缓冲技术。本系统实现了 Windows2 0 0 0操作系统下同步控制 3路 CCD相机 ,以 2 0 MB/ s数据率完成高速数据的传输与存储。
The principle of the PCI image acquisition card is introduced,and three synchronization CCD cameras of airborne polarized image system are controled by the card. This paper explains the hardware structure of the acquisition system and the methods for driver programming,and presents how to use the technique of DMA,multi-thread,and double buffers to realize the recording of high speed image data. This device realizes the synchronized acquisition, transmission and storage of three CCD cameras at the rate of 20 MB/s with Pentium IV based on the operational system of Windows2000.
出处
《数据采集与处理》
CSCD
2004年第2期228-230,共3页
Journal of Data Acquisition and Processing
基金
国家 8 63基金 ( 2 0 0 1 AA1 3 1 0 40 )资助项目
