基于FPGA的图像光点中心坐标提取  

Spot Center Coordinate Extraction System Based on FPGA

作　　者：王院生[1] 余娟[1] 路桂英[1] 张永权[1] 

机构地区：[1]中国地质大学(武汉)机械与电子信息学院

出　　处：《电视技术》2015年第3期39-42,共4页Video Engineering

摘　　要：设计了两轴转台的一部分,主要实现图像的采集、处理和光点中心坐标提取的功能。系统利用FPGA作为核心控制器,通过Verilog硬件描述语言设计出视频采集模块、PLL锁相环时钟管理模块、I2C总线模块、SDRAM存储模块和LCD显示驱动控制模块;光点中心坐标提取时,先对图像进行4邻域平均法滤波,然后求取光点图像块的中心位置作为光点的中心坐标,实现十字光标的跟踪;最后通过实验调试,验证了系统功能。The system is designed as a part of the two-axis turntable in this paper, which realizes the functions of image acquisi- tion, processing and spot center coordinates extraction, which uses FPGA as the core control devices. It is designed video capture module, PLL phase-locked loop clock management module, IIC bus module, SDRAM video data processing module and LCD dis- play drive control module through Verilog hardware description language. When the center coordinates of the spot is extracted, the image is filtered firstly by 4 point neighborhood average. Then the center position of the light spot image block is taken as the center coordinates of the light spot, achieving a cross cursor tracking. Finally, functions of the system are tested through experimental de- bugging.

关 键 词：FPGA 图像采集 图像处理 邻域平均 光电跟踪 

分 类 号：TN919.81[电子电信—通信与信息系统]