生体認証装置及び生体認証方法

Japanese Patent JP5713023

B2

A biometric authentication device includes: an illumination light source which illuminates an object carrying biometric information of a user; a sensor which generates a plurality of illumination images in which the object is photographed in a state where the illumination light source is turned on, and at least one non-illumination image in which the object is photographed in a state where the illumination light source is turned off; a difference image generating unit which generates a plurality of difference images by subtracting from a luminance value of each pixel of each illumination image a luminance value of corresponding pixel of the non-illumination image; and a biometric image generating unit which generates the biometric image based on a plurality of difference images. The biometric image generating unit determines an integration number, based on a statistical value of luminance values of a first difference image among the plurality of difference images, so that the integration number of the difference images increases as an influence of luminance values of the pixels included in at least one region of the first difference image due to the noise superimposed on the first difference image increases, and generates the biometric image by calculating luminance values of respective pixels of the biometric image based on a total of luminance values of the corresponding pixels of the difference images, the number of which is the integration number.

Takahiro Aoki

JP2012546647A

May 07, 2015

December 03, 2010

Click for automatic bibliography generation  

富士通株式会社

G06T1/00; G06T7/00; G06V10/141

JP2003208599A	2003-07-25
JP2008090412A	2008-04-17
JP2003208599A	2003-07-25
JP2008090412A	2008-04-17

Atsushi Aoki
Koichi Itsubo
Higuchi Souji
Ryu Kobayashi

Previous Patent: 無線通信システム、無線通信方法、移動局、制御方法及び基地局

Next Patent: GRIP RELEASING DEVICE IN ARTICLE GRIP CONVEYOR