基于XScale的图像采集与传输系统的设计与实现

Design and implementation of image gather and transfer system based on XScale

相对传统图像采集系统功耗和体积比较大的特点,介绍了基于XScale的图像采集与网络传输系统。该系统以IntelPXA270嵌入式微处理器为硬件核心,采用Linux嵌入式操作系统,重新编译并配置了内核,以驱动网络摄像头、图像采集卡,成功实现了基于视频接口Video for Linux Two的图像采集功能以及视频图像的网络传输,并且能够成功地在远程PC机上显示、播放,利用重建后的视频图像做图像处理和视频检测。该系统是小型无人机自主导航与控制中视觉导航以及以无人机为平台的灾害检测的基础,有广阔的应用前景。

Compared to high power and huge volume features of traditional image gather system, a new image gather and transfer system based on XScale is introduced. The system makes use of Intel PXA270 embedded microprocessor as its hardware core and adopts the embedded Linux operating system. To drive the web camera and image capturing card, the operating system＇ s kernel has to be recompiled and re-configured. Image capturing based on video for Linux two video interface and video image＇ s transmission is successfully implemented. Images are received by remote PC, they can is shown and played on remote PC. These received video and images is used in image processing and video detection after reconstruction. It is used as the basement ofvisual navigation and disaster detection, where small UAVs are requested and applied as implementation platform, has broad application prospects.