Systems and methods for efficiently capturing high-quality scans of multi-page documents with hand-held devices
US9007633B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Jul 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0452
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Capturing a sequence of images of a multi-page printed document is performed by a handheld device, such as a Smartphone. The device has one or more processors, memory, and a digital image sensor. The device monitors preview images of a first printed page of the multi-page printed document, where the preview images are generated by the digital image sensor. Without user indication of when to capture an image, the device captures a still image of the first printed page when a first quality metric of the preview images exceeds a first quality threshold. The device repeats the monitoring and capturing of additional pages until receiving indication from the user that capturing images is complete. In response to receiving indication from the user that capturing images is complete, the device concatenates the captured still images into a single digital document and stores the single digital document.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.