Finding low variance regions in document images for generating image anchor templates for content anchoring, data extraction, and document classification
US8285074B2 · kind B2 · utility
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4References
16Claims
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Key dates
| Filing date | Sep 1, 2010 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Sep 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods of generating image anchor templates from low variance regions of document images of a first class are provided. The methods select a document image from the document images of the first class and align the other document images of the first class to the selected document image. Low variance regions are then determined by comparing the aligned document images and the selected document image and used to generate image anchor templates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.