Image analysis – Pattern recognition – Feature extraction
Patent
1996-04-23
1999-01-19
Chang, Jon
Image analysis
Pattern recognition
Feature extraction
382305, 358455, 358462, G06T 100
Patent
active
058622578
ABSTRACT:
Multi-value character (line image) data, characteristic information and half-tone data are stored while the memory is effectively used. Half-tone data is outputted from the attribute separating section 20. Vector pixels or the density data of 5 bits and the characteristic flag of 3 bits are outputted from the resolution converting section 12 and the edge detecting section 13. After a discriminating flag (1 bit) has been added to them by the data mixing section 21, they are formatted in a predetermined manner and stored in the memory M. In this case, both halftone data and vector pixels are stored as raster data of 9 bits. Further, the characteristic flag is stored as a portion of the vector pixels. Accordingly, the memory M is not wasted, and it is not necessary to separately provide a memory exclusively used for the characteristic flag.
REFERENCES:
patent: 4975785 (1990-12-01), Kantor
patent: 5257116 (1993-10-01), Suzuki
patent: 5644366 (1997-07-01), Ushida et al.
patent: 5659402 (1997-08-01), Fujita et al.
patent: 5701363 (1997-12-01), Hanyuh
Ishii Akira
Moriya Hideki
Ogi Kenji
Sasuga Kazuyasu
Sekine Hiroshi
Chang Jon
Fuji 'Xerox Co., Ltd.
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