彩色遥感图像的几何校正

遥感成像时,由于飞行器的姿态(侧滚、俯仰、偏航) 、高度、速度等因素的变化及传感器自身特性造成图像像素相对于地面目标的几何畸变。利用由惯性导航系统同步记录的CCD 线阵传感器的外方位元素和在实验室标定的CCD 像元的内方位元素建立3 条CCD 线阵传感器成像的几何校正模型,通过仿真实现了遥感成像的几何 畸变及几何校正。
关键词: 几何校正;共线性方程; 内方位元素; 外方位元素
Abstract : When remote sensing ,the change of the aircraft’s attitude data (roll ,pitch , yaw) , height , speed and the property of sensor itself causes the geometric distortions of image pixels relative to surface objects. A geometric correction model of tri2CCD line sensor imaging is established by use of outer orientation elements synchronously recorded by IMU and inner orientation elements cali2 brated in the lab. At last geometric distortions and geometric corrections are simulated on the computer.
Keywords : Geometric correction ; Collinearity equation ; Inner orientation element ; Outer orientation element