Towards a Sub-decimetric Georeferencing of Ground-based Mobile Mapping Systems in Urban Areas: Matching Ground-based and Aerial- Based Imagery Using Roadmarks

We propose a novel image-based strategy for a sub-decimetre quality georeferencing of Mobile Mapping Systems in urban areas. The presented approach uses very high resolution multiple-view calibrated aerial images to extract a database of 3D invariant objects, namely road marks. These objects are also extracted in 3D in the ground-based imagery and are matched with the aerial data source. These road features can then be used as Ground Control Objects for a photogrammetric resection to finely register the images of a terrestrial mobile mapping system. All the results in this paper will be shown on a “zebra crossing” road mark. Nevertheless, the process we describe could be applied to any other road mark.