Three dimensional building models have become important during thepast years for visualization of touristic or historicobjects. Detailed facade models are essential for realistic impressionson a terrestial observer. Such models require both ageometric component that describes the shape of the building or partsof it as well as a texture component that providescolor information and depicts details that have not been incorporatedin the geometric model.Textures for building facades are typically extracted from imagestaken by ground based cameras. For very high demandson photorealistic quality, textures mapped on simple geometric modelslike polyhedra or regular surfaces are not suf?cientbecause relief structure is not preserved. This leads to an unrealisticand arti?cial impression on close-up views. Reliefstructures are bene?cial for large scale models that are closely inspectedwithin a limited area in a virtual world.Facade relief information can be extracted by measurement of depthinformation using a terrestrial laser scanner or byphotogrammetric analysis of the same images also acquired for texturemapping. Video sequences or photographs mightbe the only source of information available, if facades have beendestroyed or otherwise changed or if costs are a limitingfactor.In this paper the re?nement of a coarse wire-frame model is described.Given several views of a building along with someoutline polygons for its facades, textured relief maps will be addedto the model. The depth information is recovered fromthe images by correlation, where the given polygons provide guidanceto reduce the number of outliers.Results are given for a set of images taken by a hand held video camera.They show that relief structure due to windowholes or ornaments can be retrieved but that the overall geometricquality is limited by the resolution of the camera.
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