基于FPGA与Sobel算法的实时图像处理  

Real Time Image Processing Based on FPGA and Sobel Algorithm

作　　者：王强 冀苗苗 刘立培 骆滔 乔可 WANG Qiang;JI Miao-miao;LIU Li-pei;LUO Tao;QIAO Ke(School of Physics and Information Engineering,Shanxi Normal University,Linfen 041004,Shanxi)

机构地区：[1]山西师范大学物理与信息工程学院,山西临汾041004

出　　处：《电脑与电信》2020年第5期24-28,共5页Computer & Telecommunication

基　　金：山西师范大学教学改革创新项目《电子信息专业实践教学体系改革的研究与实践》,项目编号:2017JGXM-06;山西省教学改革创新项目《电子信息专业实践教学体系改革的研究与实践》,项目编号:J2018094。

摘　　要：如今,图像处理算法的复杂度越来越高,图像处理的数据量越来越大,图像处理的实时性显得十分重要。为了解决图像预处理、视频流数据实时性存在的问题,给出了一种基于FPGA和OV5640以Sobel算子进行边缘检测的图像采集与处理系统设计方法,FPGA将OV5640摄像头采集到的视频流数据传送至SDRAM,由Sobel算子模板处理后通过VGA显示视频图像。该设计基于Intel公司的Cyclone IV系列FPGA芯片EP4CE10F17C8进行了验证。实验结果表明,基于FPGA和Sobel边缘检测算法,使用流水线设计和乒乓操作,可实现视频流数据处理的实时性。Nowadays,the complexity of image processing algorithm is more and more high,the amount of data in image processing is more and more large,and the real-time performance of image processing is very important.In order to solve the problems of image preprocessing and real-time video stream data,this paper presents a method of image acquisition and processing system based on FPGA and OV5640 using Sobel operator for edge detection.FPGA transmits the video stream data collected by OV5640 camera to SDRAM,which is processed by Sobel operator template and then is displayed through VGA.The design is based on EP4 CE10 F17 C8,which is the FPGA chip of the Cyclone IV series of Intel company.The experimental results show that the realtime processing of video stream data can be realized by using pipeline design and ping-pong operation based on FPGA and Sobel edge detection algorithm.

关 键 词：FPGA OV5640 SOBEL算法 VGA显示 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]