彩色大面阵CCD相机的像移补偿技术

IMC Technology of the Area Scan color CCD Camera

航空相机在拍照瞬间由于飞机飞行运动和姿态变化而产生像移,要提高照相分辨力需通过像移补偿实现;在分析像移产生原因,再结合彩色大面阵CCD相机的特点,确定采用三轴陀螺稳定平台结合摆扫扫描镜头的方法补偿像移,并分析计算了补偿后的像移残差,结果满足残差小于1/3像元的指标要求,证明本文论述的像移补偿技术正确可行。

Because that the image motion is brought out in aeroplane＇s continuing flight and the change of airplane＇s gesture angles which includes roll,pitch and yaw,it is necessary to enhance the image resolution of the camera in photographing by image motion compensation （IMC）. Based on the analysis of image motion reasons ,recombined with characters of area scan color CCD ,a IMC method that three-axis gyro body stabilized platform in conjunction with the circumvolving pitch is used.According to the analysis,the remain image motion with IMC is less than 1/3 pixel size ,and this meets the desire to image quality. So the IMC method is right and efficient.