正射影像图制作及数据采集影响因素探讨

Discussion on Influencing Factors of Field Data Collection and Orthophoto Map

近年来,消费级无人机由于价格低廉、作业灵活方便,逐渐成为小区域航空摄影测量的主要作业方式。正射影像图作为摄影测量常见的工作内容之一,在国家和地方高精度空间基础数据数字化中有着广泛应用。如何以消费级无人机为基础,生产出高质量的正射影像图对提升城市空间数字化发展水平至关重要。本文从像控点数量、影像重叠率和飞行时间三方面探讨相关因素对正射影像图质量的影响,可为消费级无人机外业高标准数据采集提供参考价值。

In recent years,consumer UAV has gradually become the main operation mode of small area aerial photogrammetry due to its low price and flexible and convenient operation.As one of the common work contents of photogrammetry,orthophoto map is widely used in national and local high-precision spatial basic data digitization.How to produce high-quality orthophoto map based on consumer UAV is crucial to improve the development level of urban spatial digitization.This paper discusses the influence of relevant factors on the quality of orthophoto map from the number of image control points,image overlap rate and flight time.The research results have a certain reference value for high standard field data acquisition of consumer UAVs.