Comparison device and comparison method

Patent metadata

Field	Value
Publication number	US-2021224521-A1
Application number	US-201716306198-A
Country	US
Kind code	A1
Filing date	May 29, 2017
Priority date	Jun 8, 2016
Publication date	Jul 22, 2021
Grant date	—

Abstract

There are provided a comparison device and a comparison method including determining whether or not a comparison target person is a subject of a registered face image by comparing an imaged face image to the registered face image, of determining whether or not a blocking object is provided in the imaged face image, of determining whether or not removing the blocking object is required, by calculating a partial similarity score between the imaged face image and the registered face image in a partial area corresponding to the blocking object, and of urging the blocking object to be detached based on the partial similarity score.

First claim

1 . A comparison device comprising:
a processor; and a storage unit, wherein the processor compares an imaged face image obtained by imaging a face of a comparison target person to a face image of the comparison target person, which has been registered in the storage unit, and in a case where it is determined that the comparison target person as an imaged target in the imaged face image is not a subject of the registered face image, as a result of the comparison, the processor presents information indicating that a blocking object is to be removed, to the comparison target person, based on a result obtained by determining whether or not the blocking object is provided in the imaged face image.

2 . The comparison device of claim 1 ,
wherein the information indicating that the blocking object is to be removed is presented to the comparison target person in a case where a similarity score is equal to or smaller than a first threshold Th 1 and equal to or greater than a second threshold Th 2 , as a result of the comparison.

3 . The comparison device of claim 1 ,
wherein the processor further
calculates a partial similarity score between the imaged face image and the registered face image in a partial area corresponding to the blocking object, and
presents the information indicating that the blocking object is to be removed, to the comparison target person based on the partial similarity score and the result obtained by determining whether or not the blocking object is provided.

4 . The comparison device of claim 3 ,
wherein strength in presentation of the information indicating that the blocking object is to be removed is changed based on the partial similarity score.

5 . The comparison device of claim 1 ,
wherein, in a case where it is determined that the blocking object is provided in the imaged face image, the information indicating that the blocking object is to be removed is presented to the comparison target person by highlighting a template image having the blocking object.

6 . The comparison device of claim 5 ,
wherein a degree of the highlighting is changed based on a partial similarity score between the imaged face image and the registered face image in a partial area corresponding to the blocking object.

7 . A comparison method of comparing an imaged face image obtained by imaging a comparison target person to a registered face image, the method comprising:
comparing the imaged face image to the registered face image; and in a case where it is determined that the comparison target person as an imaging target of the imaged face image is not a subject of the registered face image, as a result of the comparison, presenting information indicating that a blocking object is to be removed, to the comparison target person, based on a result obtained by determining whether or not the blocking object is provided in the imaged face image.

8 . The comparison method of claim 7 ,
wherein, in a case where a partial similarity score between the imaged face image and the registered face image is equal to or smaller than a first threshold Th 1 and equal to or greater than a second threshold Th 2 , determination processing of whether or not the blocking object is provided in the imaged face image is performed, and processing of presenting information indicating that the blocking object is to be removed, to the comparison target person is performed based on the determination processing.

9 . The comparison method of claim 7 , further comprising:
calculating a partial similarity score between the imaged face image and the registered face image in a partial area corresponding to the blocking object; and presenting the information indicating that the blocking object is to be removed, to the comparison target person based on the partial similarity score and a result obtained by determining whether or not the blocking object is provided.

10 . The comparison method of claim 9 ,
wherein strength of urging is changed in accordance with the partial similarity score between the imaged face image and the registered face image.

11 . The comparison method of claim 7 ,
wherein, in a case where it is determined that the blocking object is provided in the imaged face image, the information indicating that the blocking object is to be removed is presented to the comparison target person by highlighting a template image having the blocking object.

12 . The comparison method of claim 11 ,
wherein a degree of the highlighting is changed based on a partial similarity score between the imaged face image and the registered face image in a partial area corresponding to the blocking object.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• NOZUE Yosuke
• Maeno Kazuki
• Yoshio Hiroaki

Classifications

• G06V40/171 Primary

  Local features and components; Facial parts (eye characteristics G06V40/18); Occluding parts, e.g. glasses; Geometrical relationships · CPC title

• G06V40/172

  Classification, e.g. identification · CPC title

• G06F18/22

  Matching criteria, e.g. proximity measures · CPC title

• G06T7/00 Primary

  Image analysis · CPC title

• G06K9/2054

  Physics · mapped topic