大疆无人机影像POS数据空三加密预处理方法

DJI Drone POS Image Data Aerial Triangulation Encryption Preprocessing Method

以大疆无人机影像数据为例,通过分析影像自带POS线元素的特点,提出了将线元素空三加密前提取并转换至工程坐标系的预处理方式,在空三加密时使影像中的像控标识与像控点位置接近,便于正确快速刺点。实践证明,该预处理方法可实现大疆无人机航测刺点的正确率和效率,为大疆无人机数据处理提供一条新的处理思路。

Taking the image data of DJI drones as an example,by analyzing the characteristics of the POS line elements in the image,a preprocessing method is proposed to extract and convert the line elements to the engineering coordinate system before the aerial triangulation encryption which enables the image control mark in the image close to the position of the image control point,thus to facilitate quick and correct pinpoint.Engineering practice has proved that this preprocessing method can achieve the accuracy and efficiency of DJI UAV aerial survey pinpoint,and provide a new concept for DJI UAV data processing.