CN106446860A - Method for clearly acquiring face recognition image under light interference condition - Google Patents
Method for clearly acquiring face recognition image under light interference condition Download PDFInfo
- Publication number
- CN106446860A CN106446860A CN201610883328.1A CN201610883328A CN106446860A CN 106446860 A CN106446860 A CN 106446860A CN 201610883328 A CN201610883328 A CN 201610883328A CN 106446860 A CN106446860 A CN 106446860A
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- image
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000004065 semiconductor Substances 0.000 claims abstract description 12
- 230000008859 change Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 230000004888 barrier function Effects 0.000 claims description 28
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 206010034972 Photosensitivity reaction Diseases 0.000 abstract 2
- 238000004590 computer program Methods 0.000 abstract 1
- 230000001815 facial effect Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 238000005286 illumination Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241001354471 Pseudobahia Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
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
- G06V40/166—Detection; Localisation; Normalisation using acquisition arrangements
Abstract
The invention relates to a method for clearly acquiring a face recognition image under a light interference condition. According to the method, an image sensor for acquiring image information and a shielding layer made of a heat-resistant and lightproof material are provided; the image sensor is formed by covering a surface photosensitive layer of a high-photosensitivity semiconductor with the lightproof shielding layer; a human face shape photosensitive hole is formed in the middle of the shielding layer and is used for enabling the image sensor to sensitize human face features, the image sensor cannot receive other light sources, and image acquisition equipment only can acquire clear recognized object face features by taking the recognized human face as exposure criterion; and according to the image sensor, light rays are converted into electric charges by the high-photosensitivity semiconductor capable of recording the change of the light rays, the electric charges are converted into digital signals by an analog-digital converter chip, and the digital signals are integrated into complete image information by a computer program to be displayed and stored. By adoption of the method, interference of environmental light rays on human face image acquisition can be effectively reduced, the human face image features are restored clearly and the recognition rate is increased.
Description
Technical field
The present invention relates to technical field of biometric identification, it is related to identify personnel identity by picture pick-up device collection facial image
Technical method, particularly to one kind under conditions of multi-light interference environment, clear gather identified object facial image
Method.
Background technology
One of means as safety certification, human body biological characteristics technology of identification is increasingly being applied to each neck
Domain.Due to the continuous lifting of anti-terrorism demand, human body biological characteristics technology of identification is widely paid close attention to further.
Recognition of face be a kind of based on the technology being recognized using the face feature of the mankind, this system pass through picture pick-up device
Collection facial image or video flowing, to the image data information automatic detection being collected and tracking, by professional technical office
Reason, thus reach comparison, the purpose of identification objects identity.
As one of 21 century ten big high-tech, the development of face recognition technology and application, also in microelectronics and IT technology
Promotion under, have development at full speed.Have recognizer and the manufacturer of hardware technology is increasing, discrimination is constantly carrying
Height, or even have manufacturer to be known as the discrimination of its system up to 99.5%.
But, these discriminations improving constantly, mostly reach stably or under certain environmental conditions in illumination, work as knowledge
It is excessively secretly too strong that other environment is in light, or the change of identification object marginal ray very greatly when, its discrimination will be greatly lowered.At certain
Under a little environmental conditions, especially when high light projects behind from identification object, front end face collecting device, under high light interference, obtains
Identification image can be seriously dimmed, at all cannot realize identify.It main reason is that the generation of image video depends on optics
Condition, when optical condition is unfavorable for or has influence on its generation, image video will be distorted, deform, or even annihilated, screening
Cover and cannot manifest.Facial image is equally the image of optical reflection, and when being in, sunburst disturbs or outdoor background light is disturbed
When dynamic, the face picture that picture pick-up device captures all can be caused to deform upon, complexion changed, or even smudgy, lead to and the data comparing
Stock's shelves collection of illustrative plates does not match that, thus None- identified.
Certainly, engineers and technicians in the industry also under prior art conditions, seek solution by fair means or foul, such as adopt
With BLC and wide dynamic high-definition camera equipment, build shading facility out of doors, increase front end supplementary lighting sources etc., but
Can not solve to lead to gather the circumstances of image None- identified due to high light interference.
Therefore, how by related more effective technique means, face identification system can easily and accurately had strongly
Light is disturbed under environment, collects and clearly can recognize that image, makes system reach higher identification, be that industry engineers are pursued
Target.
Content of the invention
It is an object of the invention to provide a kind of method gathering recognition of face image clear under the conditions of light is disturbed, it can be reliable
Ground, out of doors under the illumination condition of environment, effectively improves the discrimination of face identification system, and application this method can effectively reduce ring
Environmental light is the interference to man face image acquiring for the background, clear reduction facial image feature, solves face identification system out of doors
The low problem of Context awareness rate.
The technical solution of the present invention is as follows：
A kind of method gathering recognition of face image clear under the conditions of light is disturbed, it includes gathering the imageing sensor of image information
And the barrier bed being made up of heat-resisting light-proof material；
Described image sensor is the lighttight barrier bed of surface photosensitive layer overlying lid in high light receiving semiconductor；
The centre of described barrier bed is provided with people's shape of face photographic hole, with by imageing sensor photosensitive face feature, image sensing
Device can't accept other light sources, and image capture device can only collect and clearly known with identified person face as Expose f iotaducials
Other subject face feature；
Described image sensor is transformed into electric charge by the quasiconductor of high photosensitive recordable light change light, is turned by modulus
Parallel operation chip is converted into digital signal, then is complete image information display and storage through computer integration procedure.
The high light receiving semiconductor of described image sensor is charge coupled cell（CCD）.
The high light receiving semiconductor of described image sensor is complementary metal oxide semiconductors (CMOS)（CMOS）.
Described barrier bed is black barrier bed.
Described barrier bed is paster medium, or coating media, or printing layer medium.
By a kind of clear under the conditions of light the is disturbed method gathering recognition of face image of the present invention, set on the image sensor
Put barrier bed, the centre of this barrier bed, reserve a shape of face photographic hole being suitable for admission facial image size, so that imageing sensor
Except face exceptionally other parts are not all photosensitive, just as identified subject face has been enclosed within the shape of face shade of customization, figure
As sensor can't accept other light sources, picture pick-up device can only be with identified face as Expose f iotaducials, thus ensureing that admission is arrived
Clearly it is identified subject face feature.
The present invention uses man face image acquiring equipment, and this equipment can be any applied image sensor（CCD or CMOS）
Make photosensitive video camera or photographing unit, its imageing sensor, through blocking after process, in the image of back end monitor screen display, is incited somebody to action
It is that mid portion assumes shape of face circle, the image of periphery black, therefore this equipment can also be a photograph that can only shoot face
Equipment.
The clear method gathering recognition of face image under the conditions of light is disturbed of the application present invention, can effectively reduce ambient light
Line（Background）Interference to man face image acquiring, clear reduction facial image feature, therefore can reliably environment out of doors light
According under the conditions of, effectively improve the discrimination of face identification system.
Brief description
Fig. 1 is a kind of clear under the conditions of light the is disturbed method gathering recognition of face image by the present invention, in image sensing
The schematic diagram of barrier bed is arranged on device.
Reference：
1 is imageing sensor, and 2 is barrier bed, and 3 is shape of face hole, and 4 is image capture device.
Specific embodiment
Referring to Fig. 1, the present invention provides a kind of method gathering recognition of face image clear under the conditions of light is disturbed, it mainly by
The imageing sensor 1 of collection image information, barrier bed 2 and image capture device 4 form.Barrier bed 2 can be a kind of by resistance to
The black barrier bed that hot light-proof material is made.Imageing sensor 1 can be CCD or CMOS.Image capture device 4
Can be video camera or photographing unit.
Imageing sensor 1 is the core parts that any electron camera all must have, and is the heart of video camera, photosensitive imaging
Will be passed through it, the light of acquisition is converted to electronic digital signal.Imageing sensor 1 is the surface sense in high light receiving semiconductor
Lighttight barrier bed 2 is covered on photosphere.Barrier bed 2 uses black material（Heat-resisting lighttight）Make, in the middle of barrier bed 2
Reserve the shape of face hole 3 being just suitable for shape of face image sensitive, with by the photosensitive face feature of imageing sensor 1.Imageing sensor 1 accepts
Less than other light sources, image capture device 4 can only collect and be clearly identified object with identified person face as Expose f iotaducials
Face feature.
Imageing sensor 1 is transformed into electric charge by the quasiconductor of high photosensitive recordable light change light, by modulus
Converter chip is converted into digital signal, then is complete image information display and storage through computer integration procedure.
The high light receiving semiconductor of imageing sensor 1 can be charge coupled cell（CCD）Or complementary metal oxidation
Thing quasiconductor（CMOS）, they are the quasiconductor of recordable light change.Barrier bed 2 can be paster medium, or coating
Medium, or printing layer medium.
The clear method gathering recognition of face image under the conditions of light is disturbed of the application present invention, can be under any background condition
Collect complete facial image.The imageing sensor processing through barrier bed, is on the surface photosensitive layer of CCD or CMOS, covers
Cover lighttight black barrier bed, the centre of this barrier bed, reserve a shape of face photographic hole being suitable for admission facial image size, with
Make imageing sensor all not photosensitive except face exceptionally other parts, just as identified subject face has been enclosed within the shape of face of customization
In shade, imageing sensor can't accept other light sources, picture pick-up device can only with identified face as Expose f iotaducials, thus
Ensure admission to clearly identified subject face feature.
When being identified the face feature of object with the camera acquisition covering barrier bed imageing sensor 1, its figure
As sensor 1 is coated with the part of barrier bed 2 will not be photosensitive, only the part in shape of face hole 3 can be photosensitive, and video camera is i.e. with this portion
Photosensitive focus is divided to be Expose f iotaducials, thus reach not light and disturbing impact and clearly obtain and debated the purpose knowing object images.
Certainly, those skilled in the art in the art are it should be appreciated that above-described embodiment is intended merely to this is described
Bright, and it is not used as limitation of the invention, as long as in the spirit of the present invention, to the change of above-mentioned enforcement, change
Type etc. all will fall within the scope of the claims.
Claims (5)
1. a kind of method of collection recognition of face image clear under the conditions of light is disturbed it is characterised in that：It includes gathering image letter
The imageing sensor of breath and the barrier bed being made up of heat-resisting light-proof material；
Described image sensor is the lighttight barrier bed of surface photosensitive layer overlying lid in high light receiving semiconductor；
The centre of described barrier bed is provided with people's shape of face photographic hole, with by imageing sensor photosensitive face feature, image sensing
Device can't accept other light sources, and image capture device can only collect and clearly known with identified person face as Expose f iotaducials
Other subject face feature；
Described image sensor is transformed into electric charge by the quasiconductor of high photosensitive recordable light change light, is turned by modulus
Parallel operation chip is converted into digital signal, then is complete image information display and storage through computer integration procedure.
2. collection recognition of face image clear under the conditions of light is disturbed according to claim 1 method it is characterised in that：Institute
The high light receiving semiconductor stating imageing sensor is charge coupled cell（CCD）.
3. collection recognition of face image clear under the conditions of light is disturbed according to claim 1 method it is characterised in that：Institute
The high light receiving semiconductor stating imageing sensor is complementary metal oxide semiconductors (CMOS)（CMOS）.
4. collection recognition of face image clear under the conditions of light is disturbed according to claim 1 method it is characterised in that：Institute
Stating barrier bed is black barrier bed.
5. collection recognition of face image clear under the conditions of light is disturbed according to claim 1 method it is characterised in that：Institute
Stating barrier bed is paster medium, or coating media, or printing layer medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883328.1A CN106446860A (en) | 2016-10-10 | 2016-10-10 | Method for clearly acquiring face recognition image under light interference condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610883328.1A CN106446860A (en) | 2016-10-10 | 2016-10-10 | Method for clearly acquiring face recognition image under light interference condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106446860A true CN106446860A (en) | 2017-02-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610883328.1A Pending CN106446860A (en) | 2016-10-10 | 2016-10-10 | Method for clearly acquiring face recognition image under light interference condition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055134A (en) * | 2019-06-05 | 2020-12-08 | 上海耕岩智能科技有限公司 | Image acquisition device and electronic equipment |
| US11356583B2 (en) | 2019-06-05 | 2022-06-07 | Shanghai Harvest Intelligence Technology Co., Ltd. | Image capturing apparatus, electronic equipment and terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1627317A (en) * | 2003-12-12 | 2005-06-15 | 北京阳光奥森科技有限公司 | Method for obtaining image of human faces by using active light source |
| CN102567706A (en) * | 2010-12-24 | 2012-07-11 | 汉王科技股份有限公司 | Human face identification device and method |
| CN104182721A (en) * | 2013-05-22 | 2014-12-03 | 华硕电脑股份有限公司 | Image processing system and image processing method capable of improving face identification rate |
| CN105842961A (en) * | 2015-01-15 | 2016-08-10 | 宁波舜宇光电信息有限公司 | Light filter, camera module and manufacturing method thereof |
-
2016
- 2016-10-10 CN CN201610883328.1A patent/CN106446860A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1627317A (en) * | 2003-12-12 | 2005-06-15 | 北京阳光奥森科技有限公司 | Method for obtaining image of human faces by using active light source |
| CN102567706A (en) * | 2010-12-24 | 2012-07-11 | 汉王科技股份有限公司 | Human face identification device and method |
| CN104182721A (en) * | 2013-05-22 | 2014-12-03 | 华硕电脑股份有限公司 | Image processing system and image processing method capable of improving face identification rate |
| CN105842961A (en) * | 2015-01-15 | 2016-08-10 | 宁波舜宇光电信息有限公司 | Light filter, camera module and manufacturing method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112055134A (en) * | 2019-06-05 | 2020-12-08 | 上海耕岩智能科技有限公司 | Image acquisition device and electronic equipment |
| US11356583B2 (en) | 2019-06-05 | 2022-06-07 | Shanghai Harvest Intelligence Technology Co., Ltd. | Image capturing apparatus, electronic equipment and terminal |
| CN112055134B (en) * | 2019-06-05 | 2022-08-05 | 上海耕岩智能科技有限公司 | Image acquisition device and electronic equipment |
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Application publication date: 20170222 |
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