Image transformation for indicia reading
US10249030B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2015 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Mar 30, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10028
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Obtaining a good image is important for reading indicia. Often, however, objects are not well aligned with an indicia reader's digital imager. This misalignment may lead to images in which an indicium may appear distorted due to perspective. This perspective distortion makes indicia reading difficult. In general, perspective distortion of an imaged object may be corrected using knowledge of the true size, shape, and/or orientation of the physical object. The present invention embraces the use of a dimensioning system to obtain the 3D information necessary to provide this knowledge. Then, using this knowledge, to transform a distorted image of an indicium into a corrected image of the indicium without distortion. This corrected image may then be processed to read the undistorted indicium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.