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:
Nov. 09, 2021
Filed:
Nov. 07, 2019
The University of Tokyo, Tokyo, JP;
Mitutoyo Corporation, Kanagawa, JP;
Yutaka Ohtake, Tokyo, JP;
Yukie Nagai, Tokyo, JP;
Tomonori Goto, Hokkaido, JP;
Seiji Sasaki, Saitama, JP;
Masato Kon, Kanagawa, JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
MITUTOYO CORPORATION, Kanagawa, JP;
Abstract
An isosurface mesh M is generated by extracting voxels having a certain CT value from volume data obtained by X-ray CT. A gradient vector g of a CT value is calculated at each vertex p of the isosurface mesh M. A plurality of sample points S are generated in positive and negative directions of the calculated gradient vector g. Gradient norms N of CT values at the respective generated sample points S are calculated. The vertex p of the isosurface mesh is moved and corrected to a sample point Sm having the maximum norm Nm calculated.