Handheld scanner with high image quality
US8441695B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2010 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Apr 16, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0414
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer peripheral that may operate as a scanner. The scanner captures image frames as it is moved across an object. The image frames are formed into a composite image based on computations in two processes. In a first process, fast track processing determines a coarse position of each of the image frames based on a relative position between each successive image frame and a respective preceding image determine by matching overlapping portions of the image frames. In a second process, fine position adjustments are computed to reduce inconsistencies from determining positions of image frames based on relative positions to multiple prior image frames. When the determined position of multiple image frames overlap, pixels in the composite image may be formed by combing values of pixels in the image frames, which improves image quality of the composite image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.