Acquiring, stitching and blending diffuse appearance attributes on 3D models

A new system for the construction of highly realistic models of real free-form 3D objects is proposed, based on the integration of several techniques (automatic 3D scanning, inverse illumination, inverse texture-mapping and textured 3D graphics). Our system improves the quality of a 3D model (e.g. acquired with a range scanning device) by adding color detail and, if required, high frequency shape detail. Detail is obtained by processing a set of digital photographs of the object. This is carried out by performing several subtasks: to compute camera calibration and position, to remove illumination effects obtaining both illumination-invariant reflectance properties and a high resolution surface normal field, and finally to blend and stitch the acquired detail on the triangle mesh via standard texture mapping. In particular, the smooth join between different images that map on adjacent sections of the surface is obtained by applying an accurate piecewise local registration of the origin...

• Type: Journal
• Year: 2002
• Where: VC
• Authors: Claudio Rocchini, Paolo Cignoni, Claudio Montani, Roberto Scopigno
• Keywords: Illumination-invariant Reflectance Properties, Standard Texture Mapping, Surface Normal Field, VC 2002