The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2013
Filed:
Dec. 23, 2009
Axel Schwotzer, Groβ-Gerau, DE;
Konrad Klein, Heidelberg, DE;
Axel Schwotzer, Groβ-Gerau, DE;
Konrad Klein, Heidelberg, DE;
Sirona Dental Systems GmbH, Bensheim, DE;
Abstract
For the purpose of 3D scanning the surface of an object by optical double triangulation using the phase-shifting method, more particularly for dental purposes, at least two 3D scans of the same object () are carried out at different triangulation angles (θ1, θ2), the first angle of which is known and the second angle of which is known at least approximately. For each pixel (B) of the phase related image (φ1(x,y)), a wave number (wz(x,y) is determined using the second phase related image, the integral portion of which is equal to the order (n) of the uniqueness range (E1) in which the respective pixel (B) is located. The wave number (wz(x,y)) is optimized, at least for a random sample of m pixels (B), by minimizing a non-integral portion of the wave number (wz (x,y)−[wz(x,y)]).