Title:
特徴量生成装置、システム、特徴量生成方法及びプログラム
Document Type and Number:
Japanese Patent JP7031762
Kind Code:
B2
Abstract:
A minutia features generation apparatus comprises: an input part to input an image formed as a curved stripe pattern by a ridge line(s); a generation part to generate a skeleton image formed by extracting a skeleton(s) from the image; an extraction part to extract a plurality of minutiae from the skeleton image; and a calculation part configured to calculate a relation minutia feature(s) representing relationship between a first minutia and a second minutia among the plurality of minutiae, wherein the calculation part calculates as one of the relation minutia features defined by a crossing count of the skeleton(s) and a straight line connecting from the second minutia to a nearest neighbor point which is a point on a trace line traced by tracing starting from the first minutia, which point is located at a shortest line distance from the second minutia.
Inventors:
Masanori Hara
Application Number:
JP2021014387A
Publication Date:
March 08, 2022
Filing Date:
February 01, 2021
Export Citation:
Assignee:
NEC
International Classes:
G06T7/00
Domestic Patent References:
| JP2007328502A | ||||
| JP2001076142A |
Foreign References:
| WO2010044250A1 | ||||
| WO2017038695A1 | ||||
| WO2009078117A1 |
Attorney, Agent or Firm:
Asato Kato
Kiyoto Uchida
Kiyoto Uchida