Title:
IMAGE COLLATION SYSTEM AND IMAGE COLLATION METHOD
Document Type and Number:
WIPO Patent Application WO/2005/038716
Kind Code:
A1
Abstract:
There are provided three-dimensional data entering means (10) for entering the three-dimensional data of an object; a reference image storing part (30) for storing a reference image of at least one object; attitude candidate deciding means (20) for producing an attitude candidate that is a candidate of the attitude of the object; comparison image producing means (40) for projecting the three-dimensional data to a two-dimensional image in accordance with the attitude candidate, while producing a comparison image approximate to the reference image; and image collating means (55) for performing a collation based on either a distance value between the reference image and the comparison image or a similarity degree therebetween. This allows collation or retrieval to be performed with a high accuracy even when the reference image of the object is captured under different conditions such as attitude, illumination and the like, or even when no three-dimensional object model of the object can be obtained in advance, or even when only one or few reference images are existent.
Inventors:
HAMANAKA MASAHIKO (JP)
Application Number:
PCT/JP2004/015612
Publication Date:
April 28, 2005
Filing Date:
October 21, 2004
Export Citation:
Assignee:
NEC CORP (JP)
HAMANAKA MASAHIKO (JP)
HAMANAKA MASAHIKO (JP)
International Classes:
G06K9/00; G06T1/00; G06T7/00; G06T15/20; (IPC1-7): G06T7/00; G06T1/00
Foreign References:
| JPH10232934A | 1998-09-02 | |||
| JP2000306106A | 2000-11-02 | |||
| JPH11238135A | 1999-08-31 | |||
| JP2001134765A | 2001-05-18 | |||
| JP2001222716A | 2001-08-17 |
Other References:
None
Attorney, Agent or Firm:
Yamakawa, Masaki c/o Yamakawa International Patent Office (8th Floor Shuwa-Tameike Building, 4-2,
Nagatacho 2-chom, Chiyoda-ku Tokyo 14, JP)
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