基于POS系统和SIFT特征的无人机遥感影像拼接方法

A Mosaic Method of UAV Romote Sensing Images Based on POS System and SIFT Features

传统的无人机遥感影像拼接采用的是航空摄影流程,这种方法拼接合成的图像几何精度比较高,但是拼接过程复杂、拼接速度非常慢、要求拍摄方式为垂直下视、无法进行实时拼接。基于POS系统和SIFT特征进行的遥感影像拼接,实时情况下能够完成无人机实时下传的垂直下视遥感影像的拼接,事后情况下能够完成垂直下视、摆扫模式遥感影像拼接,在拼接时还可以根据具体情况对图像进行降采样提高图像拼接速度。

The traditional UAV remote sensing image mosaic is based on aerial photography process.This method has higher geometric accuracy,but the process of mosaic is complex,the speed of mosaic is very slow,the shooting mode is vertical down-looking,and the real-time mosaic is impossible.The remote sensing image mosaic based on POS system and SIFT features can complete the real-time download of UAV vertical down-looking remote sensing image mosaic,perform the vertical down-looking after the event and swing mode remote sensing image mosaic,and can also improve image mosaic speed by downsampling.