METHOD AND DEVICE FOR EXTRACTING CHARACTERISTIC OF PICTURE

Japanese Patent JP3198705

B2

PURPOSE: To build up an entirely compact system by effectively utilizing a generic picture characteristic extracted from multi-gradation picture data and to realize individual picture processing with high accuracy while referencing the extracted characteristic of the picture by extracting the characteristic of the picture with detailed classification.
CONSTITUTION: The device is provided with a characteristic picture element extract means 1 which extracts a characteristic picture element TDE corresponding to at least an edge picture element part having a large density change and distinguishing its leading and its trailing, or a density gradient characteristic picture element TDN representing a density gradient for a picture element part having a density gradient or a characteristic picture element TD including the edge characteristic picture element TDE and the density gradient characteristic picture element TDN from picture elements of each scanning line and with a referencing buffer 2 in which the property of the characteristic picture element TD extracted by the characteristic picture element extract means 1 is written for each relevant picture element and provided so as to be used in common by plural individual picture processing means 7.

Atsushi Kasao

JP4319593A

August 13, 2001

February 08, 1993

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Fuji Xerox Co., Ltd

G06T1/00; G06T5/00; G06T7/60; H04N1/40; (IPC1-7): H04N1/40; G06T1/00; G06T7/60

JP4165869A
JP1232481A
JP2148968A
JP239770A
JP3214965A

Masahiro Koizumi (2 outside)

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