多通道嵌入式高速图像采集存储系统的研究

Study of multi-channel high-speed embedded image capture and storage system

实时图像采集存储设备作为视觉处理系统中最前端的组成部分,其性能在很大程度上决定了后续任务的难易程度。随着近年来图像传感器分辨率的提高和摄像机阵列结构的广泛采用,图像采集存储系统性能也在向高速高分辨率方向发展。采用FPGA阵列协同处理,设计了并行多SD卡控制结构,实现了一种多通道模块化的嵌入式高速实时图像采集存储系统,能够对单通道速率达660 Mb/s的图像数据流进行多通道实时数据采集和存储操作,进而为使用多摄像机阵列结构设计的应用和研究提供了有效的平台保障。

Real-time image capture and storage device,as the headmost part of vision processing system,determines the resultant quality of the following tasks,such as target tracking,image segmentation,and etc.Recently,the resolution of image sensors has been increased rapidly and the structure of camera array has been adopted in many wide field-of-view applications,and image capture and storage system is developing along the direction of high-speed and high-resolution.In this paper a parallel multi-SD card control structure with FPGA array is designed to implement a modular multi-channel embedded high-speed real-time image capture and storage system,which can process single channel image data stream up to 660Mb/s with real-time data capture and storage capability.The proposed new system provides an efficient platform for camera array system applications and researches.