System, method and computer program product for document image analysis using feature extraction functions
US8379980B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2011 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Jul 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/413
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems and computer program products to improve the efficiency and computational speed of an image enhancement process. In an embodiment, information that is generated as interim results during feature extraction may be used in a segmentation and classification process and in a content adaptive enhancement process. In particular, a cleaner image that is generated during a noise removal phase of feature extraction may be used in a content adaptive enhancement process. This saves the content adaptive enhancement process from having to generate a cleaner image on its own. In addition, low-level segmentation information that is generated during a neighborhood analysis and cleanup phase of feature extraction may be used in a segmentation and classification process. This saves the segmentation and classification process from having to generate low-level segmentation information on its own.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.