Even with the eminent development of digital documentation techniques, persist difficulties in the virtualization of objects with poor radiometric information (for image-based information capture) or certain properties of materials and their textures (for range-based information capture). The present study compares in a practical manner the use, scope and result of two methods that extract and manage images in a substantially different way: based on the correspondence of stereo pairs of pixels and its neighborhood, shape from stereo; based on the extraction of silhouettes by interpretation of the figure, shape from silhouette. The proposed case study collects some chalk sculptures of Jorge Oteiza, chosen for their special features for this purpose, ie parts of a uniform color textures, especially black, or reflective or shiny.
Análisis de dos métodos de digitalización tridimensional aplicados a superficies con mala información radiométrica
BARBA, SALVATORE
2014
Abstract
Even with the eminent development of digital documentation techniques, persist difficulties in the virtualization of objects with poor radiometric information (for image-based information capture) or certain properties of materials and their textures (for range-based information capture). The present study compares in a practical manner the use, scope and result of two methods that extract and manage images in a substantially different way: based on the correspondence of stereo pairs of pixels and its neighborhood, shape from stereo; based on the extraction of silhouettes by interpretation of the figure, shape from silhouette. The proposed case study collects some chalk sculptures of Jorge Oteiza, chosen for their special features for this purpose, ie parts of a uniform color textures, especially black, or reflective or shiny.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
