摘要
航空相机拍照时难免会产生像移,要提高成像质量和相机分辨力必须进行像移补偿。推导出前向像移、飞行器俯仰、滚动和偏航产生的像移及其误差计算公式,以美国 KS-146 航空侦察相机为例,计算出前向像移的大小数量级在 10-3,而其它像移量大小则为 10-4数量级,提出在航空垂直拍照时前向像移占主导地位,应作为像移补偿的主要方向,同时提出在航空相机设计中通过缩短曝光时间和提高快门精度等途径来减小像移、增强航摄图像的清晰度。
It is inevitable to bring image motion during photographing of aerospace camera. It is necessary to compensate image motion to improve imaging quality and resolution Formulas of image motion and their errors caused by aircraft’s forward flight and its pitching, rolling and sheering are given in the paper. Taking KS-146 camera as an example, the forward image motion is 10-3 magnitude while the other image motions reach 10-4 magnitude. It is proposed that the forward image motion is the key factor to be compensated by means of shortening exposure time and improving shutter precision for the purpose of minimizing image motion and enhancing image clarity.
出处
《光电工程》
CAS
CSCD
北大核心
2004年第B12期12-14,共3页
Opto-Electronic Engineering
关键词
航空相机
像移补偿
曝光
像移误差
Aerial cameras
Image motion compensation
Exposure
Image motion errors
