基于大疆智图和Pix4Dmapper的Mavic 3无人机航摄精度分析
首发时间:2024-01-22
摘要:测图精度是决定无人机航摄成果质量的关键指标,在进行大规模应用前需要开展实证研究。针对大疆公司最新发布的Mavic 3行业无人机,基于大疆智图和Pix4Dmapper两个无人机影像处理平台,对有/无控制点条件下的航摄成果进行了详细的定位精度验证与分析。结果表明:(1) 在RTK模式、免像控条件下,两个平台输出的影像均能满足1:500比例尺制图精度的要求。其中,绝对/相对定位精度在水平方向上中误差绝对值均不超过0.05 m,在垂直方向上中误差绝对值均不超过0.15 m。添加适量像控点并不能明显提高绝对定位精度。(2) Pix4Dmapper在成图精度方面优于大疆智图,但在处理效率上明显不及后者。本研究可为基于Mavic 3行业无人机的大比例尺制图应用提供参考。
关键词: Mavic 3 RTK 测图精度 大疆智图 Pix4Dmapper
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Mavic 3 UAV aerial photography accuracy analysis based on DJI Terra and Pix4Dmapper
Abstract:Mapping accuracy is the key indicator determining the quality of unmanned aerial vehicle (UAV) aerial photography results, and empirical research should be carried out before large-scale applications. Based on two UAV image processing platforms of DJI Terra and Pix4Dmapper, the positioning accuracy of aerial photography results with or without control points is verified and analyzed in detail for the newly released Mavic 3 industrial UAV by DJI. The results show that: (1) Under the conditions of RTK mode and no ground control points, the output images of the two platforms can meet the requirements of 1:500 scale mapping accuracy. Among them, the absolute value of the root mean square error (RMSE) of the absolute/relative positioning accuracy does not exceed 0.05 m in the horizontal direction, and does not exceed 0.15 m in the vertical direction. Adding appropriate ground control points can not improve the absolute positioning accuracy. (2) Pix4Dmapper outperforms DJI Terra in terms of mapping accuracy, but it is obviously inferior to the latter in processing efficiency. This study can provide a reference for large-scale mapping applications based on Mavic 3 industrial drones.
Keywords: Mavic 3 RTK Mapping accuracy DJI Terra Pix4Dmapper
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基于大疆智图和Pix4Dmapper的Mavic 3无人机航摄精度分析
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