基于Zynq的医用内窥镜视频流采集与处理系统设计与研究  

Design and Implementation of Video Stream Acquisition and Processing System for Medical Endoscopes Based on Zynq

作　　者：王云峰 何鑫 范正吉 景金荣 洪应平[1] WANG Yunfeng;HE Xin;FAN Zhengji;JING Jinrong;HONG Yingping(MOE Key Laboratory of Instrumentation Science and Dynamic Measurement,North University of China,Taiyuan Shanxi 030051,China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《电子器件》2023年第6期1726-1733,共8页Chinese Journal of Electron Devices

基　　金：国家自然科学基金青年科学基金项目(51705475)。

摘　　要：设计了基于Zynq的医用内窥镜视频流采集与处理系统,本系统在Xilinx公司推出的Zynq系列ARM+FPGA SoC平台上进行软硬件协同设计,充分发挥Zynq集成的ARM和FPGA的处理优势,完成医用内窥镜解码采集、处理与显示。本系统由FPGA采集以OV6946为核心的医用内窥镜经OV426桥接IC转码后的数字信号图像,通过AXI4总线缓存到ARM端的DDR3,经ARM做部分处理后再次缓存并由VDMA读出并转换为AXI4-STREAM。通过Vivado HLS编写输入输出接口均为AXI4-STREAM的视频流处理算法,固化到FPGA端运行,经过HDMI显示。实验结果表明,在HDMI显示器可以观察到经算法实时处理的OV6946的视频流,保证低功耗的同时也完成了高性能、实时的视频流处理。A video stream acquisition and processing system for medical endoscopes is designed,which performs software and hardware co-design on the Zynq series ARM+FPGA SoC platform launched by Xilinx,and fully utilizes the processing advantages of Zynq’s inte-grated ARM and FPGA to complete the decoding,processing and display of medical endoscopes.This system collects the digital signal image of the medical endoscope with OV6946 as the core after transcoding through OV426 bridge IC by FPGA,and buffers it to DDR3 on the ARM side through the AXI4 bus.The digital signal image is partially processed by ARM,buffered again,read out by VDMA,and transferred to AXI4-STREAM.The video stream processing algorithms with both the input and output interfaces being AXI4-STREAM are written through Vivado HLS,solidified to the FPGA side to run,and displayed through HDMI.The experimental results show that the video stream of the OV6946 processed in real time by the algorithm can be observed on the HDMI display,which ensures low power consumption and completes high-performance,real-time video stream processing.

关 键 词：内窥镜 视频流 ZYNQ FPGA 视频图像处理 

分 类 号：TN911.73[电子电信—通信与信息系统]