Apparatus and method of dynamically caching symbols to manage a dictionary in a text image coding and decoding system
US7724164B2 · kind B2 · utility
4Cited by
10References
33Claims
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Key dates
| Filing date | Jan 24, 2007 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Mar 25, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/94
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus of a text image coding and decoding system includes a decomposer to decompose image data to extract a stripe image having one or more symbols, a matching unit to match the symbols with reference symbols of a symbol dictionary, and a dynamic symbol caching unit to generate one or more new symbols when the one or more new symbols of the symbols are not included in the symbol dictionary, and to remove the least used one or more of the reference symbols, so that the symbol dictionary is updated as an updated symbol dictionary with the one or more new symbols and without the least used one or more reference symbols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.