干旱区生态环境知识资源中心(Arid): User-Driven Geolocation of Untagged Desert Imagery Using Digital Elevation Models.

Arid

报告编号	ADA586695
	User-Driven Geolocation of Untagged Desert Imagery Using Digital Elevation Models.
	Tzeng, E; Zhai, A; Clements, M; Townshend, R; Zakhor, A.
英文摘要	We propose a system for user-aided visual localization of desert imagery without the use of any metadata such as GPS readings, camera focal length, or field-of-view. The system makes use only of publicly available digital elevation models (DEMs) to rapidly and accurately locate photographs in non-urban environments such as deserts. Our system generates synthetic skyline views from a DEM and extracts stable concavity-based features from these skylines to form a database. To localize queries, a user manually traces the skyline on an input photograph. The skyline is automatically refined based on this estimate, and the same concavity-based features are extracted. We then apply a variety of geometrically constrained matching techniques to efficiently and accurately match the query skyline to a database skyline, thereby localizing the query image. We evaluate our system using a test set of 44 ground-truthed images over a 10;000 km2 region of interest in a desert and show that in many cases, queries can be localized with precision as fine as 100m2.
英文关键词	Photographs Deserts Elevation Image processing Dem(Digital elevation models) Geolocation
出版年	2013
语种	英语
国家	United States
来源学科分类	82B - Photographic Techniques & Equipment
URL	http://r.cnki.net/KCMS/detail/detail.aspx?DbCode=KJBG&dbname=KJBGW&filename=59faffc131c97d1d549dac6e
来源机构	Non Paid ADAS
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/273880
推荐引用方式 GB/T 7714	Tzeng, E,Zhai, A,Clements, M,et al. User-Driven Geolocation of Untagged Desert Imagery Using Digital Elevation Models.,2013.