Flattening and rectifying a curved image
US10275858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2017 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Jan 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10024
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Representative embodiments disclose mechanisms to flatten an image comprising at least one curved or bent edge. An image is received from a capture device and a UI is presented that allows a user to define a general vicinity of an item in the image to be flattened. The system analyzes pixels in the general vicinity to identify the highest probability of a corner in each general vicinity. The gradient of pixels between the corners is calculated and pixels scores are calculated based on the gradient. The pixels with the lowest scores between each corner are used as an edge. Smoothing is applied to each edge. Dimensions of the flat representation are calculated and the system maps pixels bounded by the edges and corners to pixels in the flat representation and copies the mapped pixels to the flat representation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.