Panorama Photogrammetry for Architectural Applications

• Autores: Thomas Luhmann
• Localización: Mapping, ISSN 1131-9100, Nº 139, 2010, págs. 40-45
• Idioma: inglés
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• Resumen

  • The paper discusses the potential of photogrammetric multistation panorama processing for the 3D reconstruction and documentation of architectural objects. It is a summary of various paper by the author dealing with panorama imaging, mathematical models and photogrammetric processing.. Panorama images can be generated by any kind of digital cameras. If, as usual, cylindrical panoramic images are desired, they can be acquired if a suitable camera mount is used. In this case single image frames can easily be stitched together to a complete or partial panorama under consideration of the strict camera model (calibration parameters). Alternatively, a rotating linescanner camera can be used that may produce very high resolution images. The mathematical model of cylindrical panoramas is presented. If at least three different panoramas have been generated from different local stations, they can be oriented by bundle adjustment. Due to the stable geometry of the cylindrical panorama model the bundle adjustment can be performed with very few object points. Once each panorama is oriented with respect to global coordinate system, photogrammetric object reconstruction procedures such as space intersection or a moving floating mark can be applied. Three practical examples demonstrate the process of panorama object recording and modeling. The entrance hall of the university has been reconstructed in 3D yielding a wireframe model of the interior. For the Great Hall of the Oldenburg castle again four panoramas have been processed whereby special effort has been spent to produce a high-quality colour panorama. Finally, a historical wall mosaic has been recorded and orthorectified.