基于嵌入式系统的二维条码数据采集器

Two-dimensional bar codes data acquisition based on the embedded system

本文设计了一种基于Intel XScale PXA255硬件平台和嵌入式操作系统WinCE的二维条码数据采集器,可以有效地进行二维条码信息的译码。将应用程序分解成多任务,简化了应用系统软件设计。使用CMOS数字图像传感芯片,获取二维条码的原始图像,再由硬件平台中的图像处理程序对图像数据进行处理,然后在条码中定位单个码字符号的图像,利用算法识别出单个码字符号。

This paper describes a new design of two-dimensional bar codes ＇data acquisition, which adopts Intel XScale PXA255 as hardware plat and embedded operation system WinCE as software plat, and may carry on the decoding of two-dimensional bar code information effectively. The application is divided into multi-task,which simplifies the software design of application system. The primitive picture of two-dimensional bar codes is gained by use of the CMOS numeral picture sensor chip, again the image data is carried on processing by the image processing program in the hardware platform, then the picture of the single symbol mark in the bar code is located,and the single symbol mark is distinguished using the algorithm.