Item Infomation


Title: Co-registration of multitemporal UAV image datasets for monitoring applications :a new approach
Authors: Aicardi. I.
Issue Date: 2016
Citation: In: Proceedings of the XXIII ISPRS Congress : From human history to the future with spatial information : Commission I /ISPRS Archives Volume XLI-B1 (2016), pp. 901-907.
Abstract: In the last years we have witnessed a rapid development of UAVs (Unmanned Aerial Vehicles), especially for image collection. One of the advantages is the possibility to perform high resolution and repeated flights in a cheap way to detect changes over time. Thus, dynamic scenes can be monitored acquiring image blocks in different epochs in a flexible way. Anyway, most of UAVs are not able to provide accurate direct geo-referencing information, so image blocks from different epochs still need to be co-registered to efficiently detect changes. This task is mostly completed using GCPs (Ground Control Points), although this approach is time consuming as manual intervention is needed. This paper aims at investigating new techniques to automate the co-registration of image blocks without the use of GCPs, just relying on an image based co-registration (IBCR) approach. The image alignment is initially performed on a reference (anchor) epoch and the registration of the following (slave) epochs is performed including some (anchor) images from the reference epoch with fixed external orientation parameters. This allows constraining the Bundle Block Adjustment of the slave epoch to be consistent with the reference one. The study involved the use of 10 multi-temporal image block over a large building construction site, and spanning a time frame of 2 years. Different tests have been performed for the reference image choice with a manual approach and then evaluating the reached accuracy. The performed tests on the chosen test site have shown that the accuracy of the proposed methodology provides results comparable to the common GCPs registration approach.
URI: http://tailieuso.tlu.edu.vn/handle/DHTL/4560
Source: http://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLI-B1/757/2016/isprs-archives-XLI-B1-757-2016.pdf
Appears in Collections:Tài liệu mở
ABSTRACTS VIEWS

33

VIEWS & DOWNLOAD

0

Files in This Item:
There are no files associated with this item.

Bạn đọc là cán bộ, giáo viên, sinh viên của Trường Đại học Thuỷ Lợi cần đăng nhập để Xem trực tuyến/Tải về



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.