摘要
针对胶片型画幅式遥感器倾斜成像时产生图像畸变、在航拍后图像处理中景物无法拼接的问题进行了研究。介绍了该遥感器所采用的焦面帘幕式快门的工作原理,分析了遥感器在飞机姿态变化时的像移补偿。由于在曝光过程中的像移补偿误差使地面景物在像面上存在像移、以及焦面帘幕式快门的分时曝光特性,使地面景物变形,导致图像畸变。通过对产生畸变原因进行分析、计算,给出计算图像畸变量的公式,为航拍图像后处理时校正图像畸变提供技术支持。
The research was based on that the scene images couldn＇t be mosaiced well in aerophotograph,which aimed at the image distortion of certain film aerial camera in oblique imaging.The principle of the focal plane curtain shutter used in the camera was introduced and the image motion compensation was analyzed while altering the plane＇s posture.The scenery and the images＇ distortion were caused by the compensation error to the image motion in exposure and the time-sharing characteristic of focal plane curtain shutter.The calculation formula of image distortion was given by analyzing the reason,providing the technology support for correcting the image distortion in latter aerial image processing.
出处
《光机电信息》
2010年第9期39-43,共5页
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