Image analysis – Pattern recognition
Patent
1997-07-09
1999-11-30
Tran, Phuoc
Image analysis
Pattern recognition
382209, 382220, 382221, 382318, G06K 900, G06K 962, G06K 968
Patent
active
059956607
ABSTRACT:
The present invention has an object to determine whether image data is generated by data processing such as PDL, or optically captured scan-in image, for each area.
To achieve the object, a determining table is provided for distribution patterns of pixels having substantially the same pixel value for image data area composed of plural pixels. Then a reference area designating unit designates a reference area by selecting from input image data the pixel of interest having a pixel value and the reference pixels surrounding thereof. A same pixel value distribution generating unit compares the pixel value of the pixel of interest with the pixel values of the reference pixels in the reference area to generate a distribution pattern of the pixel having substantially the same pixel value. Next, a determining unit compares the generated distribution pattern with the distribution patterns held in the determining table to determine the reference area to be the image data generated by data processing.
REFERENCES:
patent: 5058189 (1991-10-01), Kanno
patent: 5255331 (1993-10-01), Kelly
patent: 5719967 (1998-02-01), Sekine
patent: 5742703 (1998-04-01), Lin et al.
patent: 5815605 (1998-09-01), Koike
"International Standard of Multimedia Encoding", Maruzen books, pp. 18-43 (1991). (non-English).
Andoh Akihiro
Kimura Shun-ichi
Koshi Yutaka
Shishido Shinji
Fuji Xerox Co. LTD
Mariam Daniel G.
Tran Phuoc
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