Identifying document forms using digital fingerprints
US10083353B2 · kind B2 · utility
2Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2016 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Mar 23, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques are disclosed to identify a form document in an image using a digital fingerprint of the form document. To do so, the image is evaluated to detect features of the image and generate a boundary around each feature. For each boundary, dimensions of the boundary may be stored in a color channel of a pixel in a second image. Thus, the color of the pixel represents the size of the boundary. The second image is the digital fingerprint of the form. To identify the form corresponding to the digital fingerprint, the digital fingerprint may be compared to digital fingerprints of known forms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.