无人机视频流时空地理编码方法研究  

Research on spatiotemporal geocoding method of UAV video stream

作　　者：任亚锋 刘飞 薛艳丽[3] 张研霞 马新辉 REN Yafeng;LIU Fei;XUE Yanli;ZHANG Yanxia;MA Xinhui(China TopRS Technology Co.Ltd.,Beijing 100039,China;School of Geomatics and Urban Spatial Informatics,Beijing University of Civil Engineering and Architecture,Beijing 102616,China;Chinese Academy of Surveying and Mapping,Beijing 100036,China)

机构地区：[1]中测新图(北京)遥感技术有限责任公司,北京100039 [2]北京建筑大学测绘与城市空间信息学院,北京102616 [3]中国测绘科学研究院,北京100036

出　　处：《测绘科学》2024年第6期154-160,共7页Science of Surveying and Mapping

基　　金：国家自然科学青年基金项目(42104017);国家重点研发计划课题项目(2023YFC3803905);北京建筑大学“双塔计划”项目(JDYC20220825)。

摘　　要：针对视频测绘产品空间定位信息缺失或者精度较低的问题,该文提出了无人机视频流时空地理编码技术方法,研制了视频流时空同步编码装置,建立了基于高频显示装置的时空编码同步性检测方法和技术流程,可实现时钟同步精度为10 ms量级的视频流与时空信息融合编码结果。经实时视频测绘精度验证,正射影像平面精度为4.69 m,相关成果能够为应急等场景提供实时、高精度、高分辨率数据支撑。Addressing the issue of missing or low-accuracy spatial positioning information information in video mapping products, this paper proposes a spatiotemporal geocoding technology method for UAV video streams. A device for synchronous encoding of video streams in space and time was developed. A method and technical process for checking the synchronicity of spatiotemporal encoding using high-frequency display devices was established, capable of achieving video stream and spatiotemporal information fusion encoding results with a clock synchronization precision of the order of 10 ms. Real-time video mapping accuracy verification showed that the orthoimage planimetric accuracy is 4.69 m. The related achievements can provide real-time, high-precision, and high-resolution data support for scenarios such as emergency response.

关 键 词：视频测绘 时空地理编码 视频流 同步编码 

分 类 号：P231[天文地球—摄影测量与遥感] P237[天文地球—测绘科学与技术]