摄像头与图像采集卡结合的图像采集在各种图像处理系统特别是涉及到动态视频的应用中是获取图像数据的一种主要方式。提出了一种基于PCI总线的1:1方式图像采集卡的设计方案,选择合适的采样时钟频率,使得采集的图像在水平、垂直方向像素点间距之比为1:1,有效地解决了常规图像采集卡采集图像的几何形变问题。1:1方式图像采集卡采集的图像数据,无需经过软件几何校正,可广泛应用于实时图像处理系统,提高了系统性能。 Image acquisition combined with a camera and image acquisition card is one of the major ways to capture image data in a variety of image processing systems, especially applications that involve motion video. A design scheme of 1: 1 image capture card based on PCI bus is proposed. Selecting the appropriate sampling clock frequency, the ratio of the pixel pitch in the horizontal and vertical directions is 1: 1, which effectively solves the conventional Image acquisition card acquisition images of the geometric deformation problem. The image data collected by the 1: 1 mode image acquisition card can be widely used in the real-time image processing system without the need of software geometric correction to improve the system performance.