Abstract
Abstract. Oblique airborne photogrammetry is rapidly maturing and being offered by service providers as a good alternative or replacement of the more traditional vertical imagery and for very different applications (Fig.1). EuroSDR, representing European National Mapping Agencies (NMAs) and research organizations of most EU states, is following the development of oblique aerial cameras since 2013, when an ongoing activity was created to continuously update its members on the developments in this technology. Nowadays most European NMAs still rely on the traditional workflow based on vertical photography but changes are slowly taking place also at production level. Some NMAs have already run some tests internally to understand the potential for their needs whereas other agencies are discussing on the future role of this technology and how to possibly adapt their production pipelines. At the same time, some research institutions and academia demonstrated the potentialities of oblique aerial datasets to generate textured 3D city models or large building block models. The paper provides an overview of tests, best practices and considerations coming from the R&D community and from three European NMAs concerning the use of oblique aerial imagery.
Highlights
Oblique airborne photogrammetry is quickly growing and entering the workflow of service providers which are trying to complement the more traditional pipeline based only on vertical images
In Fritsch et al (2012) the name “All-In-One Photogrammetry” was proposed as oblique aerial photogrammetry offers more potential for information extraction to provide - besides 3D point clouds, detailed Digital Surface Model (DSM) and true orthoimages, 3D roof structures and corresponding 3D building models needed for updating 3D urban databases
One potential use of oblique imagery is the capture of topographic vector data directly from a 3D point cloud generated by image matching on oblique imagery
Summary
Oblique airborne photogrammetry is quickly growing and entering the workflow of service providers which are trying to complement (or replace) the more traditional pipeline based only on vertical images. It is clear that a better mapping, understanding and management of the urban ecosystem is required including new environmental applications that allow us to characterize our cities for better planning of urban growth. In such a context, the need for a realistic (3D) modelling of cities, including all its volume and morphology for overlaying and exploiting all thematic and administrative information becomes evident. From an economic point of view, Smart Cities are expected to be a 1.5 trillion-dollar market in 2020, with a 25% of growth rate per year (Frost & Sullivan, 2013) The studies are driven by the clear problems in processing oblique image blocks and by the numerous applications opened-up by oblique aerial views
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
