Correcting perspective distortion in double-page spread images
US10140691B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2016 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Aug 23, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/247
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A distortion correction component of a mobile device receives an image of a spread open multi-page document, determines a binding edge line of the spread open multi-page document, determines a first set of substantially vertical straight lines lying left of the binding edge line and a second set of substantially vertical straight lines lying right of the binding edge line. The distortion correction component then determines a first vanishing point based on the first set of substantially vertical straight lines and a second vanishing point based on the second set of substantially vertical straight lines. A first quadrangle is determined based on the first vanishing point and a second quadrangle is determined based on the second vanishing point. A corrected image for the first page is generated based on the first quadrangle and a corrected image for the second page is generated based on the second quadrangle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.