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Distribution of semantic annotations towards a set of spatially-oriented photographs

Today with the development of new information technologies, the domain of conservation and promotion of cultural heritage benefits from new tools to disseminate knowledge on heritage buildings. These tools are intended to help experts to enrich and access information about buildings. This paper describes this critical issue and proposes an approach permitting the automatic transfer of annotations in a set of oriented photographs (whose positions and orientations in space are known) by using 3D information. First of all, photographs are processed with an automated image-based 3D reconstruction method to produce 3D information (specifically 3D coordinates). Then, 3D information is used in the process of annotations’ transfer between images. Finally, with this process, the modification of annotations can be easily implemented. As a consequence, this process provides a simple way to annotate blocs of images all at once instead of one by one.