Face image processing apparatus and method

• US 7,324,670 B2
• Filed: 12/12/2003
• Issued: 01/29/2008
• Est. Priority Date: 12/12/2002
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Yuasa, Mayumi, Kozakaya, Tatsuo
• Primary Examiner(s): Miriam; Daniel
• Assistant Examiner(s): Hung; Yubin
• Application Number:
  US10/733,231
• Publication Number:
  US 20040136574A1
• Time in Patent Office: 1,509 Days
• Field of Search: 382115-118, 382/154, 382/164, 358/538
• US Class Current: 382/118
• CPC Class Codes: G06V 40/161 Detection; Localisation; Normalisation

Abstract

A face image processing apparatus, includes: a face region detecting unit configured to detect a face feature point of a person from a plurality of images picked up by a plurality of imaging units respectively, to detect a face region; a face feature extracting unit configured to extract a face feature from an image of the face region detected by the face region detecting unit; a person recognizing unit configured to calculate a similarity measure based on a face feature of a specific person being previously registered and the face feature extracted by the face feature extracting unit to recognize the person; and an output apparatus which outputs a recognition result in the person recognizing unit.

Claims

1. A face image processing apparatus, comprising:

a face region detecting unit including a plurality of face region detecting sections each configured to detect a face feature point of a person to be identified from one of a plurality of images picked up by a plurality of imaging units, respectively, to detect a face region;

a face feature extracting unit including a plurality of face feature extracting sections each configured to extract a face feature from one of the images corresponding to the face region detected by one of the plurality of face region detecting sections;

a photograph judging unit configured to compare a first face feature extracted by a first one of the plurality of face feature extracting sections with a second face feature extracted by a second one of the plurality of face feature extracting sections to judge whether a photographic subject imaged by the plurality of imaging units is a photograph;

a person recognizing unit configured to calculate a similarity measure based on a face feature of a specific person being previously registered and a face feature determined from the face features extracted by the face feature extracting sections, to recognize the person to be identified; and

an output apparatus providing a recognition result received from the person recognizing unit.

2. A certification apparatus, comprising:

a plurality of imaging units which pick up a plurality of images of a first person, respectively;

a plurality of face region detecting units each configured to detect a face feature point of the first person from each of the plurality of images to detect a face region corresponding to the face feature point;

a face feature extracting unit configured to extract a face feature from images each corresponding to the face region detected by one of the plurality of face region detecting units;

a photograph judging unit configured to judge whether a photographic subject imaged by the plurality of imaging units is a photograph; and

a person recognizing unit configured to calculate a similarity measure between a face feature of a specific person being previously registered and the face feature extracted by the face feature extracting unit, to recognize the first person;

wherein the face feature extracted by the face feature extracting unit includes a plurality of face features corresponding to the respective images; and

the photograph judging unit compares the plurality of face features with each other to judge whether the photographic subject is a photograph.

3. The certification apparatus as claimed in claim 2,

wherein the photograph judging unit converts an inclination of one of the plurality of face features to compare the one of the plurality of face features with another one of the plurality of face features.

4. A certification apparatus, comprising:

a plurality of imaging units which pick up a plurality of images respectively;

a plurality of face feature point extracting units each configured to extract a face feature point from one of the plurality of images;

an others mixture judging unit configured to judge whether an identical person is indicated by a first face feature point extracted by a first one of the plurality of face feature point extracting units and a second face feature point extracted by a second one of the plurality of face feature point extracting units; and

a person recognizing unit configured to recognize a person according to the first and second face feature points when the others mixture judging unit judges that the identical person is indicated.