工控系统中数字视频叠加的设计

Industrial Solution of Digital OSD System

提出工控系统中视频叠加的设计方案,并采用该方案构建了视频叠加系统。系统基于FPGA实现了编解码芯片接口模块、视频叠加模块以及工控系统接口模块。存储器映射架构的灵活运用使系统易于修改,系统可重用性强。彩色视频叠加效果使叠加信息与图像背景的对比度更强。单像素叠加精度的实现,使系统能精确定位目标。该系统适合于恶劣环境下的工业级应用。

This paper introduces a industrial solution of digital OSD system and constructs a system using the solution, The system implements video interface module,on screen display module and memory map module by utilizing FPGA, Memory map module as a interface for industrial system and FPGA is a successful solution,which makes the system modifiable and reusable.The colorful OSD gives the displayed information high contrast.The system can precisely lo- cate the target for the implement of one-pixel OSD resolution.The system is adaptive to kinds of industrial application under wretched circumstances.