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.
出处
《传感技术学报》
CAS
CSCD
北大核心
2010年第4期538-542,共5页
Chinese Journal of Sensors and Actuators
关键词
电子消旋
电视经纬仪
DSP+FPGA
数学平台
双线性插值
electronic elimiating rotation
video theodolite
DSP＋FPGA
mathematics platform
bilinera interpolation
