WO2005104009A1 - Face recognition system - Google Patents
Face recognition system Download PDFInfo
- Publication number
- WO2005104009A1 WO2005104009A1 PCT/GB2005/001521 GB2005001521W WO2005104009A1 WO 2005104009 A1 WO2005104009 A1 WO 2005104009A1 GB 2005001521 W GB2005001521 W GB 2005001521W WO 2005104009 A1 WO2005104009 A1 WO 2005104009A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recognition system
- optical radiation
- face recognition
- face
- camera
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/145—Illumination specially adapted for pattern recognition, e.g. using gratings
Definitions
- This invention relates to a face recognition system. More particularly the invention relates to a face recognition system which improves the quality of images acquired by the face recognition system.
- the subjects' face is illuminated by a light source incident on the subjects face, and an image of the subjects' face is then captured by a camera. This image of the subjects' face can be used to confirm the identity of the subject, and/or to verify the existence of the subject.
- these highly reflective surfaces/face regions will reflect the light incident on the subjects' face in a particular way. Specifically, the light reflected from the spectacles, or from oily/shiny regions of the face will be specularly reflected. By contrast, light which is reflected from matt regions of the subjects' face will be diffusely reflected.
- the specularly reflected light and the diffusely reflected light are then incident on a camera to produce an image of the subjects' face.
- the specularly reflected light will saturate the camera, where it is incident on the lens. This saturation of the camera by the specular reflection will product bright spots on the acquired image of the subjects' face. Acquired images which include these bright spots resulting from the specular reflection are of a low quality and are less useful for analysis carried out in a face recognition system. Better quality images will be obtained by a face recognition system which uses images produced from using only the diffusely reflected light from the subjects' face.
- a face recognition system comprising at least one source of optical radiation for illuminating the face of a subject and image capture means for acquiring an image of said illuminated face; characterized in that said at least one source of optical radiation and said image capture means are provided with means to modify said optical radiation, whereby to reduce specular reflection in the acquired image of said face.
- the means to modify said optical radiation are polarizing filters located in front of said source of optical radiation and said image capture means.
- the plane of polarization of the polarizing filter provided to said at least one source of optical radiation is orthogonal to the plane of polarization of the polarizing filter provided to the image capture means.
- the image capture means is a camera, and the polarizing filter provided in front of the camera covers at least the lens of the camera.
- the polarizing filter provided to the source of optical radiation covers the source of optical radiation.
- FIG. 1 shows a face recognition system according to the invention.
- the figure shows a face recognition system 2 which is used for acquiring an image of the face 10 of a subject 1.
- the face recognition system includes light sources 3, a camera 4, computer control means 7 and polarizing filters 5 and 6.
- the subjects' face 10, is illuminated by the light sources 3.
- the light sources 3 are typically visible light sources, with an illumination intensity of between 700-2000 lux, but other sources of optical radiation may be used (e.g. infra-red) and other intensity ranges could also be used.
- the light emitted from the light sources 3 passes through polarizing filters 6, positioned directly in front of light sources 3.
- the polarizing filters 6 can be located immediately in front of the light sources 3, or up to 2 metres away from the light sources 3.
- the polarizing filters 6 can be positioned in any orientation with respect to light sources 3. However, the polarizing filters 6 should preferably cover all of the light source 3.
- regions of light sources 3 are not covered by the polarizing filters 6, this will lead to unwanted or unusual effects in the image of the subjects' face acquired by the camera 4.
- the light that passes through polarizing filters 6 to illuminate the subjects' face 10 is now polarized light.
- the polarized light that is incident on matt regions (e.g. region 12) of the subjects' face 10 will be diffusely reflected.
- polarized light that is incident on oily/shiny regions 11 of the subjects' face 10, or on spectacles 13 that the subject may be wearing is specularly reflected from the surface and/or spectacles.
- Filter 5 is another polarizing filter, and is positioned so as to have a plane of polarization that is orthogonal to the plane of polarization of polarizing filters 6 positioned in front of lights sources 3. Again, filter 5 can be positioned immediately in front of camera 4, or up to 10 cm in front of camera 4. This polarizing filter 5 will prevent the light which has been specularly reflected from the subjects' face from passing through polarizing filter 5 to reach the camera 4.
- the polarizing filter 5 only has to cover the lens 8 of camera 4 completely, but it can extended to cover the whole of the camera 4 if desired.
- the polarizing filter 5 allows the diffusely reflected light to pass through the filter 5 to reach lens 8 of camera 4. The diffusely reflected light then produces an image of the subjects' face 1.
- the camera 4 and light sources 3 are typically controlled by computer control means 7, but they can be independently controlled by separate control means.
- the light source 3 and camera 4 are all arranged in the same plane.
- the light source 3 and camera 4 may be arranged to be aligned in the same direction but not in the same plane, or they may be arranged so that the light source 3 is angled with respect to the camera 4.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0408966.0A GB0408966D0 (en) | 2004-04-22 | 2004-04-22 | Face recognition system |
GB0408966.0 | 2004-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005104009A1 true WO2005104009A1 (en) | 2005-11-03 |
Family
ID=32344205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2005/001521 WO2005104009A1 (en) | 2004-04-22 | 2005-04-21 | Face recognition system |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB0408966D0 (en) |
WO (1) | WO2005104009A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2172805A2 (en) | 2008-10-03 | 2010-04-07 | John Hyde | Special positional synchronous illumination for reduction of specular reflection |
EP3193318A1 (en) * | 2016-01-18 | 2017-07-19 | Autoliv Development AB | Driver monitoring system and driver monitoring method for a motor vehicle |
US9830506B2 (en) | 2015-11-09 | 2017-11-28 | The United States Of America As Represented By The Secretary Of The Army | Method of apparatus for cross-modal face matching using polarimetric image data |
CN107657252A (en) * | 2017-09-19 | 2018-02-02 | 成都折衍科技有限公司 | The vein fingerprint face composite identification system of brightness can be automatically controlled |
WO2019155458A1 (en) * | 2018-02-06 | 2019-08-15 | Oryx Vision Ltd. | Prevention of sensors' damage in optical systems |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030142853A1 (en) * | 2001-11-08 | 2003-07-31 | Pelco | Security identification system |
US6714665B1 (en) * | 1994-09-02 | 2004-03-30 | Sarnoff Corporation | Fully automated iris recognition system utilizing wide and narrow fields of view |
-
2004
- 2004-04-22 GB GBGB0408966.0A patent/GB0408966D0/en not_active Ceased
-
2005
- 2005-04-21 WO PCT/GB2005/001521 patent/WO2005104009A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6714665B1 (en) * | 1994-09-02 | 2004-03-30 | Sarnoff Corporation | Fully automated iris recognition system utilizing wide and narrow fields of view |
US20030142853A1 (en) * | 2001-11-08 | 2003-07-31 | Pelco | Security identification system |
Non-Patent Citations (4)
Title |
---|
KAMITANI T ET AL: "Improvement of the reliability of human identification using mosaic facial image", IMAGE PROCESSING AND ITS APPLICATIONS, 1997., SIXTH INTERNATIONAL CONFERENCE ON DUBLIN, IRELAND 14-17 JULY 1997, LONDON, UK,IEE, UK, vol. 2, 14 July 1997 (1997-07-14), pages 876 - 880, XP006508421, ISBN: 0-85296-692-X * |
NAYAR S K ET AL: "Removal of specularities using color and polarization", COMPUTER VISION AND PATTERN RECOGNITION, 1993. PROCEEDINGS CVPR '93., 1993 IEEE COMPUTER SOCIETY CONFERENCE ON NEW YORK, NY, USA 15-17 JUNE 1993, LOS ALAMITOS, CA, USA,IEEE COMPUT. SOC, 15 June 1993 (1993-06-15), pages 583 - 590, XP010095935, ISBN: 0-8186-3880-X * |
NORIMATSU Y ET AL: "Detection of the, gaze direction using the time-varying image processing", INTELLIGENT TRANSPORTATION SYSTEMS, 2003. PROCEEDINGS. 2003 IEEE OCT. 12-15, 2003, PISCATAWAY, NJ, USA,IEEE, vol. 1, 12 October 2003 (2003-10-12), pages 74 - 79, XP010673864, ISBN: 0-7803-8125-4 * |
WILDES R P ET AL: "A system for automated iris recognition", APPLICATIONS OF COMPUTER VISION, 1994., PROCEEDINGS OF THE SECOND IEEE WORKSHOP ON SARASOTA, FL, USA 5-7 DEC. 1994, LOS ALAMITOS, CA, USA,IEEE COMPUT. SOC, 5 December 1994 (1994-12-05), pages 121 - 128, XP010100093, ISBN: 0-8186-6410-X * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2172805A2 (en) | 2008-10-03 | 2010-04-07 | John Hyde | Special positional synchronous illumination for reduction of specular reflection |
US9830506B2 (en) | 2015-11-09 | 2017-11-28 | The United States Of America As Represented By The Secretary Of The Army | Method of apparatus for cross-modal face matching using polarimetric image data |
EP3193318A1 (en) * | 2016-01-18 | 2017-07-19 | Autoliv Development AB | Driver monitoring system and driver monitoring method for a motor vehicle |
EP3525186A1 (en) * | 2016-01-18 | 2019-08-14 | Veoneer Sweden AB | Driver monitoring system and driver monitoring method for a motor vehicle |
CN107657252A (en) * | 2017-09-19 | 2018-02-02 | 成都折衍科技有限公司 | The vein fingerprint face composite identification system of brightness can be automatically controlled |
WO2019155458A1 (en) * | 2018-02-06 | 2019-08-15 | Oryx Vision Ltd. | Prevention of sensors' damage in optical systems |
Also Published As
Publication number | Publication date |
---|---|
GB0408966D0 (en) | 2004-05-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8872908B2 (en) | Dual-imager biometric sensor | |
US8254768B2 (en) | System and method for illuminating and imaging the iris of a person | |
US6292576B1 (en) | Method and apparatus for distinguishing a human finger from a reproduction of a fingerprint | |
US7397943B2 (en) | Method and arrangement for touchless detection of data of uneven surfaces | |
CN101650775B (en) | Uniform light source-based human face recognition device | |
US20040047491A1 (en) | Image capturing device with reflex reduction | |
US8358337B2 (en) | Pupil detection device and pupil detection method | |
US11017225B2 (en) | Image synthesizing apparatus, iris authentication system, image synthesizing method, and iris authenticating method | |
US20070057164A1 (en) | Scheimpflug normalizer | |
US9300931B2 (en) | Image pickup system | |
WO2004077336A3 (en) | Coaxial narrow angle dark field lighting | |
WO2004021254A3 (en) | Non-contact optical imaging system for biometric identification | |
TW200727882A (en) | Illumination characteristic selection system for imaging during an ophthalmic laser procedure and associated methods | |
US11182631B2 (en) | Information processing method and electronic device | |
WO2005104009A1 (en) | Face recognition system | |
JP2001043301A (en) | Two-dimensional code reader | |
CA2482005A1 (en) | Illumination device and illumination method | |
JP2014180285A (en) | Skin image generation system for analysis and skin image generation method for analysis | |
US10670790B2 (en) | System and method for illuminating and identifying an object | |
US8831416B2 (en) | System and method for illuminating and identifying a person | |
KR20230128430A (en) | Systems and method for vision inspection with multiple types of light | |
WO2002085091A3 (en) | Camera with improved illuminator | |
JP2010046309A (en) | Evaluation method and evaluation device of dullness of skin | |
KR101460686B1 (en) | Apparatus and method for scanning image having hologram processing function | |
WO2001065466A2 (en) | Method and apparatus for detecting a color change of a live finger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |