基于FPGA+DSP的实时图像消旋系统  

A Real-Time Eliminating Image Rotation System Based on FPGA+DSP

作　　者：陈二瑞[1,2] 乔永明[2] 梁雁冰[2] 王晨[2] 田广元[2] 王鲜红[2] 

机构地区：[1]中国科学院研究生院,北京100039 [2]中国科学院西安光学精密机械研究所,西安710119

出　　处：《传感技术学报》2010年第4期538-542,共5页Chinese Journal of Sensors and Actuators

摘　　要：针对两轴电视经纬仪动基座跟踪目标时,视轴无法隔离载体扰动造成图像旋转现象,提出一种基于数学平台的电子消旋方法,采用捷联式惯导+DSP+FPGA的硬件系统通过反向旋转和双线性插值对图像进行消旋和填充,完成视频恢复,该系统已成功应用于小型舰载经纬仪上,可完成720×576×24大小彩色视频图像的恢复,图像质量良好,输出帧频25f/s,系统自身的输出误差在1个象元内。An electronic elimiating rotation method based on mathematic platform is put forward,which can be used on image rotation by carrier perturbation when the video theodolite tracks target on the active pedestal. The hardware system with strapdown inertial navigation equipment,DSP and FPGA,can elimate rotation and fill the image by reverse rotation and bilinear interpolation.This system developed has successfully applied in minitype shipboard theodolite,can complete the restoration of 720×576×24 color video image,and achieve frame frequency with 25 frame/s for one fine quality image and less then one pure pixel level of maximum pixel error.

关 键 词：电子消旋 电视经纬仪 DSP+FPGA 数学平台 双线性插值 

分 类 号：TN911.73[电子电信—通信与信息系统]