Method and apparatus for removing noise from a digital image
US8064721B2 · kind B2 · utility
1Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2009 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Dec 28, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention provides a system that removes noise from an image. During operation, the system first identifies blobs in the image, wherein a blob is a set of contiguous pixels which possibly represents a character or a portion of a character in the image. Next, the system analyzes the blobs to dynamically determine a “noise threshold” for the blobs. The system then removes blobs from the image which are below the noise threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.