应用于图象融合的高集成度视频信号采集系统  

High Integrated Video Signal Grabbing System for Multi-Spectrum Image Fusion

作　　者：方庆喆 倪国强[1] 蒲恬[1] 

机构地区：[1]北京理工大学光电工程系,北京100081

出　　处：《中国图象图形学报（A辑）》2002年第2期196-200,共5页Journal of Image and Graphics

基　　金：国家高技术 86 3计划 ( 86 3-30 8-18-0 4( 3) ) ;国家重点预研项目

摘　　要：为配合多波段图象实时融合系统的研制 ,设计和开发了高速、高集成度 ,并具有广泛通用性的前端视频信号采集系统 .该系统的设计和开发采用了专用视频解码芯片和大规模可编程逻辑器件 (EPL D)以及 VHDL 语言 .系统具有集成度高、可靠性好、性能优良、体积小、接口简单、采样参数在线可编程修改等特点 .其应用于多波段图象采集和融合系统中 ,作为前端图象采集部分取得了良好的效果 .同时 。In the design of a front end of a real time image fusion system, a high speed, high integrated, general purpose video signal grabbing system has been developed by using one integrated video decoder, a large scale EPLD device. The EPLD device is configured by a program written in the VHDL language. The grabbing system can provide randomly continually data buffer memory access without waiting by using two buffer memory banks, which map to same address space. The grab parameters, for example, the beginning point, the dimension of grab window, can be change on line. It has following advantages: high integration and reliability, small dimensions, simple interfaces and in system programmability, etc. The system can be realized in one EPM7064SLC84 EPLD device without I 2C interface. The full function EPLD chip with I 2C interface is implemented in one EPM7160SLC84 and successfully applied to a multi channel image grabbing and fusion system. The on chip resource usage rate is 80%. On the other hand, the design can be also applied to the other image processing systems as a high integrated video signal grabbing front end without hardware change. The need change can be implemented by change the VHDL program which configures the EPLD device.

关 键 词：EPLD VHDL 图象采集 图象融合 数字图象处理 视频信号采集系统 

分 类 号：TN911.73[电子电信—通信与信息系统]