Biometric information process device, biometric information process method, computer-readable non-transitory medium and distance detection device

Patent metadata

Field	Value
Publication number	US-10068119-B2
Application number	US-201715411762-A
Country	US
Kind code	B2
Filing date	Jan 20, 2017
Priority date	Feb 1, 2016
Publication date	Sep 4, 2018
Grant date	Sep 4, 2018

Abstract

A biometric information process device includes: an image device configured to capture an image of an object; a memory; and a processor coupled to the memory and the processor configured to execute a process, the process comprising: detecting a touch point of the object with respect to a touch panel; extracting a biometric feature from the image of the object that is acquired by the image device; and correcting biometric information acquired from the image of the object based on a movement amount of the object on the touch panel and a movement amount of the biometric feature in the image of the object when the touch point detected in the detecting moves.

First claim

What is claimed is:

1. A biometric information process device comprising:
an image device configured to capture an image of an object;
a memory; and
a processor coupled to the memory and the processor configured to execute a process, the process comprising:
detecting a touch point of the object with respect to a touch panel;
extracting a biometric feature from the image of the object that is acquired by the image device; and
correcting biometric information acquired from the image of the object based on a movement amount of the object on the touch panel and a movement amount of the biometric feature in the image of the object when the touch point detected in the detecting moves; wherein
the memory is configured to store biometric information in advance; and
the process further comprises comparing the biometric information corrected in the correcting and the biometric information stored in the memory; wherein
the biometric information stored in the storing of the biometric information in advance is acquired from the image of the object in a case where a region of the object contacting to the touch panel moves in advance and is related with a ratio between a movement amount of the object on the touch panel and a movement amount of the biometric feature in the image of the object; and
in the correcting, the biometric information acquired from the image of the object is corrected based on the ratio; wherein
the object is a hand;
a body part that is in touch with the touch panel is a finger; and
a body part of the object captured by the image device includes a palm.

2. The biometric information process device as claimed in claim 1 , wherein:
the process further comprises acquiring distance information between the object and the image device based on the movement amount of the object on the touch panel and the movement amount of the biometric feature on the image of the object when a touch region of the object with respect to the touch panel moves; and
information acquired from the image of the object is corrected by using the distance information acquired in the acquiring.

3. The biometric information process device as claimed in claim 2 , wherein:
in the extracting, biometric features of at least two points are extracted from the image of the object;
in the acquiring, two or more distance information between the object and the image device are acquired based on movement amounts of the biometric features; and
in the correcting, biometric information acquired from the image of the object is corrected by using the two or more distance information acquired in the acquiring.

4. The biometric information process device as claimed in claim 2 , wherein:
the process further comprises storing a relationship between a movement amount of a biometric feature in the image captured by the imaged device and distance information between the object and the image device that is acquired in the acquiring, in advance; and
in the correcting, biometric information acquired from the image of the object is corrected based on the distance information acquired in the acquiring and the relationship stored in the storing.

5. The biometric information process device as claimed in claim 1 , further comprising:
a light source configured to irradiate a near-infrared light to the object,
wherein a biometric feature under a skin is extracted in the extracting.

6. A biometric information process method comprising:
detecting a touch point of an object with respect to a touch panel;
capturing an image of the object by an image device;
extracting a biometric feature from the image of the object; and
correcting biometric information acquired from the image of the object based on a movement amount of the object on the touch panel and a movement amount of the biometric feature in the image of the object when the touch point detected in the detecting moves;
storing biometric information in advance; and
comparing the biometric information corrected in the correcting and the biometric information stored in the storing of the biometric information; wherein
the biometric information stored in the storing of the biometric information in advance is acquired from the image of the object in a case where a region of the object contacting to the touch panel moves in advance and is related with a ratio between a movement amount of the object on the touch panel and a movement amount of the biometric feature in the image of the object; and
in the correcting, the biometric information acquired from the image of the object is corrected based on the ratio; wherein
the object is a hand;
a body part that is in touch with the touch panel is a finger; and
a body part of the object captured by the image device includes a palm.

7. The biometric information process method as claimed in claim 6 , further comprising:
acquiring distance information between the object and the image device based on the movement amount of the object on the touch panel and the movement amount of the biometric feature on the image of the object when a touch region of the object with respect to the touch panel moves,
wherein information acquired from the image of the object is corrected by using the distance information acquired in the acquiring.

8. The biometric information process method as claimed in claim 7 , wherein:
in the extracting, biometric features of at least two points are extracted from the image of the object;
in the acquiring, two or more distance information between the object and the image device are acquired based on movement amounts of the biometric features; and
in the correcting, biometric information acquired from the image of the object is corrected by using the two or more distance information acquired in the acquiring.

9. The biometric information process method as claimed in claim 7 , further comprising:
storing a relationship between a movement amount of a biometric feature in the image captured by the imaged device and distance information between the object and the image device that is acquired in the acquiring, in advance,
wherein, in the correcting, biometric information acquired from the image of the object is corrected based on the distance information acquired in the acquiring and the relationship stored in the storing.

10. The biometric information process method as claimed in claim 6 , further comprising:
radiating a near-infrared light to the object from a light source,
wherein a biometric feature under a skin is extracted in the extracting.

11. A non-transitory computer readable medium storing a program that causes a computer to execute a process, the process comprising:
detecting a touch point of an object with respect to a touch panel;
capturing an image of the object;
extracting a biometric feature from the image of the object; and
correcting biometric information acquired from the image of the object based on a movement amount of the object on the touch panel and a movement amount of the biometric feature in the image of the object when the touch point detected in the detecting moves;
storing biometric information in advance; and
comparing the biometric information corrected in the correcting and the biometric information stored in the storing of the biometric information; wherein
the biometric information stored in the storing of the biometric information in advance is acquired from the image of the object in a case where a region of the object contacting to the touch panel moves in advance and is related with a ratio between a movement amount of the object on the touch panel and a movement amount of the biometric feature in the image of the object; and
in the correcting, th

Assignees

• Fujitsu Ltd

Inventors

• Maeda Satoshi
• Abiko Yukihiro
• Hama Soichi
• Semba Satoshi
• Nada Hajime

Classifications

• G06V40/10 Primary

  Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06K9/00087

  Physics · mapped topic

• G06K9/00067

  Physics · mapped topic

• G06K9/00362

  Physics · mapped topic