Title:
IMAGE CLASSIFYING DEVICE
Document Type and Number:
Japanese Patent JP3488678
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an image classifying device for judging whether or not inputted image data are document images, especially business card images.
SOLUTION: Multilevel image data inputted from an image input device 51 are recorded in memories 5231 and 5232 as the multilevel image data and the binarized binary image data. Only valid connection components in the binary image data are left, the number of them is obtained and centroid points are extracted. The respective centroid points and the nearest centroid points are obtained and the direction is recorded in a frequency histogram memory 5236. Gradation images are differentiated, a density projection histogram is prepared from the differential images and it is differentiated and stored. Whether or not an input image is a business card is judged by whether or not the number of the valid connection components is equal to or less than a threshold, whether or not the frequency of the direction from the centroid point to the nearest centroid point is equal to or more than the threshold and whether or not an average value of the derivation of the histogram is equal to or less than the threshold, a keyword is supplied to the input image and it is recorded in an image data base device 53.
Inventors:
Toshi Amano
Atsushi Ono
Atsushi Ono
Application Number:
JP2000242126A
Publication Date:
January 19, 2004
Filing Date:
December 27, 1994
Export Citation:
Assignee:
Sharp Corporation
International Classes:
G06F17/30; G06T7/00; G06T7/60; (IPC1-7): G06T7/00; G06F17/30; G06T7/60
Domestic Patent References:
| JP5217019A | ||||
| JP259979A |
Attorney, Agent or Firm:
Hisami Fukami (7 others)
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