Title:
MARK RECOGNIZING DEVICE AND MARK RECOGNIZING METHOD
Document Type and Number:
Japanese Patent JP3279099
Kind Code:
B2
Abstract:
PURPOSE: To eliminate the difficulty in preparing a threshold value to prevent a mark from being misjudged as a similar mark in a mark recognizing device.
CONSTITUTION: Image data obtained by picking up the image of the mark of a learing object is made to degenerate to a multidimensional input signal vector, and to which it is closest among prestored plural reference vectors is detected by a vector quantization technology. The closest reference vector is renewed so as to be further approached to the input signal vector, and learning is performed. The quality of the mark is judged by using a reference vector after learning. The quality is judged by comparing the distance between the input signal vector obtained from the mark and the reference vector after learning with a threshold value. Since the quality of the mark is judged after learning is performed on the pattern of a representative mark, threshold value adjusting work can be simplified.
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Inventors:
Masahiko Uno
Naomichi Yamada
Tatsunori Hihara
Naomichi Yamada
Tatsunori Hihara
Application Number:
JP26021094A
Publication Date:
April 30, 2002
Filing Date:
October 25, 1994
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G06F15/18; G06K7/00; G06K7/10; G06K9/62; G06K9/68; G06N99/00; G01N21/88; G06T1/00; G06T7/00; (IPC1-7): G01N21/88; G06F15/18; G06K9/62; G06K9/68; G06T7/00
Domestic Patent References:
| JP512449A | ||||
| JP2268388A | ||||
| JP477888A | ||||
| JP217588A | ||||
| JP56346A | ||||
| JP7225836A |
Attorney, Agent or Firm:
Kaneo Miyata (1 person outside)
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