Methods and systems for automatic detection of continuous-tone regions in document images
US7379594B2 · kind B2 · utility
29Cited by
35References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 28, 2004 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Oct 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V30/413
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for segmentation of digital mixed-content documents. Segmentation processes may include identification of text and background regions and identification of contone regions outside the text and background regions. Further analysis may be performed to identify additional text and background regions within the contone regions thereby identifying verified contone regions, which may then be divided into contone sub-regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.