Objects with mirroring optical characteristics are left out of the scope of most 3D scanning methods. We present here a new automatic acquisition approach, shape-from-distortion, that focuses on that category of objects, requires only a still camera and a color monitor, and produces range scans (plus a normal and a reflectance map) of the target. Our technique consists of two steps: first, an improved environment matte is captured for the mirroring object, using the interference of patterns with different frequencies to obtain sub-pixel accuracy. Then, the matte is converted into a normal and a depth map by exploiting the self-coherence of a surface when integrating the normal map along different paths. The results show very high accuracy, capturing even smallest surface details. The acquired depth maps can be further processed using standard techniques to produce a complete 3D mesh of the object.
|Data di pubblicazione:||2005|
|Titolo:||3D Acquisition of Mirroring Objects using Striped Patterns|
|Digital Object Identifier (DOI):||10.1016/j.gmod.2004.11.002|
|Codice identificativo ISI:||WOS:000229664700001|
|Codice identificativo Scopus:||2-s2.0-18844413224|
|Parole Chiave:||3D Scanning,Mirroring surfaces,Shape from shading,Shape from distortion,Image based Acquisition|
|Appare nelle tipologie:||Articolo su Rivista|