Title:
ARTICLE DISCRIMINATION METHOD, ARTICLE DISCRIMINATION DEVICE, AND PROGRAM
Document Type and Number:
Japanese Patent JP3865316
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an article discrimination method and an article discrimination device that discriminate foreign materials mixed in with a large quantity of articles at high speed and with a high degree of precision.
SOLUTION: The present invention comprises: a shape feature vector extraction step (Step 2); a color feature vector extraction step (Step 3); a feature vector creation step (Step 4) which creates the feature vector of the image of the article to be discriminated by synthesizing the color feature vector and the shape feature vector; a dimension compression step (Step 5) that maps the feature vector by a conversion matrix obtained by the canonical correlation analysis and calculates a new feature vector; a distance calculation step (Step 6) for calculating the distance between the new feature vector of the image of the article to be discriminated and the new feature vector of a sample image belonging to the standard class; and a discrimination step (Step 7) for discriminating the distance by the threshold and discriminating whether the article to be discriminated belongs to the standard class.
Inventors:
Ishikawa Masumi
Noritaka Ide
Shuichi Isomura
Noritaka Ide
Shuichi Isomura
Application Number:
JP2005078259A
Publication Date:
January 10, 2007
Filing Date:
March 17, 2005
Export Citation:
Assignee:
Kyushu Institute of Technology
Sumikin Ricotech Co., Ltd.
Sumikin Ricotech Co., Ltd.
International Classes:
G06T7/00
Domestic Patent References:
| JP2001052115A | ||||
| JP2002340812A | ||||
| JP6347226A |
Other References:
延原 肇 外2名,ファジィ関係式に基づいた画像圧縮法による画像検索技術,映像情報メディア学会技術報告 Vol.25 No.24 画像情報システム,日本,(社)映像情報メディア学会,2001年 3月 2日,p.21~26
Attorney, Agent or Firm:
Kazuto Ishida
Koichi Yamaguchi
Koichi Yamaguchi