System and method for reading and decoding ID codes on a curved, sloped and/or annular object
US10438036B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2016 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Nov 9, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/1491
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.