近红外静脉显像方法及系统

Near Infrared Venous Imaging Method and System

摘要: 本文提出一种近红外静脉显像装置及方法。采用搭载Xilinx公司Zynq-7000系列FPGA和Cortex-A9双核ARM的Zedboard开发板搭建图像处理通路，将近红外摄像头采集到的近红外图像，经USB口传输到SOC系统的FPGA上进行图像处理，利用FPGA优异的并行处理速度，可以快速完成滤波、增强、分割等处理流程，处理后的图像经HDMI口传输到以LightCraft4500接口控制电路和DMD芯片共同组成的投影仪中，最终由DMD投影仪将处理后的实时静脉图像经组合光路重新投回到手背表面，实现精确定位静脉血管位置的目的。本装置及方法具备低成本，低功耗，实时显像，操作简单的特点。

Abstract: This paper involves a near-infrared venous imaging system and method. This program uses the Zed board development board taking Zynq-7000 series of FPGA and the A9 dual-core ARM of Xil-inx company to buildup image processing circuits. After the near-infrared camera catches figures, they were sent through the USB port into FPGA on the SOC system for image filtering, enhancement and segmentation. By using the excellent parallel processing speed of FPGA, the processing can be finished quickly, figures will be transmitted via HDMI port, LightCraft4500 interface controller into DMD chip projector, eventually DMD projector will project these processed venous figures on opisthenar in real time via the light path, so as to achieve the purpose of accurate position of veins. This device and the method have the characteristics of low cost, low power consumption, real time and simple operation.