基于FPGA的安检机图像数据排序算法实现

Implementation of image data sorting algorithm based on FPGA

安检机作为保证公共安全的主要设备,在飞机场、火车站、汽车站等人流量大的公共场合起着至关重要的作用。随着人们对出行安全的高度重视,因此对安检设备提出了更高的要求,尤其对安检速度提出了更高的要求。文中针对提高基于双能X射线安检机安检速度的目的,通过FPGA以及双口RAM将前端双能X射线探测器采集到的高低能像素数据在FPGA中进行排序来降低上位机处理大量无序图像数据所消耗的时间,达到提高整体图像采集处理的速度。文中提出的基于FPGA的图像数据排序算法使安检机的数据采集处理速度得到很大提高,并通过Modelsim仿真验证了本论文像素排序算法的正确性。

As the main equipment to ensure the public safety, the security checking machine plays animportant role in the public places such as airports, railway stations, bus stations and so on. As peoplepay great attention to the safety of travel, so the security equipment put forward higher requirements,especially on the speed of the security. This article aims at improving the speed of security based on dualenergy X-ray inspection machine, the high and low pixel data collected by the front-end dual energy Xray detector can be sorted in the FPGA by the FPGA and dual port RAM, and it reduces the time ofworking the large number of unordered image data to improve the overrall image acquisition andprocessing speed. In this paper, the image data sorting algorithm based on FPGA makes the dataacquisition and processing speed of the security machine improved greatly, and the correctness of thealgorithm is verified by the Modelsim simulation.