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:
Oct. 08, 2019
Filed:
Nov. 09, 2016
Cognex Corporation, Natick, MA (US);
Matthew R. Reome, Framingham, MA (US);
Ali M. Zadeh, Greenville, SC (US);
Robert A. Wolff, Sherborn, MA (US);
Ruibing Wang, Framingham, MA (US);
Aaron S. Wallack, Natick, MA (US);
David J. Michael, Wayland, MA (US);
Hongwei Zhu, Natick, MA (US);
Benjamin D. Klass, Worcester, MA (US);
Cognex Corporation, Natick, MA (US);
Abstract
This invention provides a system and method for reading and decoding ID features located on a surface of a curved, sloped and/or annular object, such as a tire moving on a conveyor. A plurality of 3D sensors are operatively connected to a vision system processor. The sensors are calibrated by calibration parameters to generate a stitched-together 3D image of a field of view in a common coordinate space. A motion conveyance (e.g. a conveyor) causes the object and the 3D sensors to move in relative motion, and the conveyance provides motion information to the vision system processor. An ID finder locates ID features within a version of the 3D image and a decoder (e.g. an OCR reader) generates data from the ID features. The ID finder can locate a trained portion of the ID and the search for variable code elements at a known orientation relative to the trained portion.