CN210469476U - Visible light and infrared light bi-pass vehicle-mounted face recognition camera - Google Patents
Visible light and infrared light bi-pass vehicle-mounted face recognition camera Download PDFInfo
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- 238000003384 imaging method Methods 0.000 claims abstract description 30
- 206010070834 Sensitisation Diseases 0.000 claims abstract description 23
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- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 230000003595 spectral effect Effects 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 claims description 5
- 238000002493 microarray Methods 0.000 claims description 4
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- 238000013461 design Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 101100248200 Arabidopsis thaliana RGGB gene Proteins 0.000 description 4
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Abstract
The utility model provides a can still guarantee the on-vehicle face identification camera of visible light and infrared light bi-pass of face identification effect under the low light level environment, its structure is including the bi-pass camera lens that has visible light and near infrared light bi-pass spectrum wave band, the sensitization chip, image processor, serializer and infrared LED light filling lamp, the setting of sensitization chip is in the imaging area of bi-pass camera lens, the sensitization chip is connected with the image processor communication, image processor is connected with the serializer communication, the serializer is connected with infrared LED light filling lamp electricity. The utility model discloses a have the bi-pass camera lens design of visible light spectrum wave band for 380nm-780nm, infrared light spectrum wave band 920nm-960 nm's two printing opacity spectrum wave bands, can make sensitization chip and image processor obtain clear color image and grey level image respectively under the sufficient and darker circumstances of external environment luminance, the high-quality face identification of homoenergetic completion.
Description
Technical Field
The utility model relates to an on-vehicle camera technical field, concretely relates to visible light and infrared light bi-pass vehicle-mounted face identification camera.
Background
With the development of the automobile market and the car networking technology and the pursuit of people on the usability and safety of vehicles, the vehicle-mounted face recognition system is favored by more and more car factories, and the application of the face recognition technology can support a user to realize face scanning, namely, the user can log in a navigation host machine end, and safety guarantee is provided for the application of a vehicle-mounted payment function. Meanwhile, the high-definition image output of the face recognition system also brings fresh experience to the user.
At present, the vehicle-mounted camera system of mainstream still adopts the visible light to design as giving first place to, output color image, and color image can bring better visual experience effect for the user, but when the car was in darker low light level environment, the camera can't output effectual clear image to can't guarantee face identification and use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can still guarantee the on-vehicle face identification camera of visible light and infrared light bi-pass of face identification effect under the low light level environment.
According to the utility model provides a visible light and infrared light bi-pass vehicle-mounted face identification camera, including bi-pass camera lens, sensitization chip, image processor, serializer and the infrared LED light filling lamp that has visible light and near infrared light bi-pass spectrum wave band, the sensitization chip sets up in the imaging area of bi-pass camera lens, the sensitization chip is connected with the image processor communication, image processor is connected with the serializer communication, the serializer with infrared LED light filling lamp electricity is connected.
The utility model discloses a theory of operation does: the utility model discloses when using, the serializer is connected with navigation host computer end or other integrated host computer end that has face identification algorithm, under the sufficient condition of such ambient brightness daytime, the visible light intensity and the near infrared light that see through the bi-pass camera lens are very weak, at this moment, the sensitization chip is very low to the sensitization efficiency of near infrared light, near infrared interference is very little, the luminance register numerical value that navigation host computer end read through visiting image processor can be very high, navigation host computer end is closed through the infrared LED light filling lamp of serializer control, the sensitization chip formation of image is the color image, and simultaneously, the sensitization chip can carry out the enhancement processing to the image, and transmit the image for navigation host computer end through the serializer, navigation host computer end is integrated with face identification algorithm, thereby carry out face identification and use; under such dark environment at night, the visible light component that sees through the bi-pass camera lens is very little, and at this moment, the luminance register numerical value that navigation host computer end read through visiting image processor is low, and navigation host computer end is opened through the infrared LED light filling lamp of serializer control and is carried out the light filling, can also fall to zero through the color saturation component of image processor with the camera simultaneously, and sensitization chip formation of image is clear grey map behind the light filling to accomplish the face identification under the low light level environment and use.
Furthermore, in order to ensure the definition of the color image and the gray image of the camera, the visible light spectrum band of the double-pass lens is 380nm-780nm, and the infrared light spectrum band of the double-pass lens is 920nm-960 nm.
Furthermore, the distance between the ideal imaging surface of the visible light wave band of the double-pass lens and the ideal imaging surface of the near infrared light wave band is less than 0.02 um. Wherein the ideal imaging plane is defined as: the positive lens has a convergence effect on light rays, the negative lens has a divergence effect on the light rays, the lens is a combination of the positive lens and the negative lens, and the final lens is a plane which needs to converge the light rays and has the best light ray convergence effect at different view field angles, namely an ideal imaging plane. The lens material has different refractive indexes for different spectrum wave bands, and the design of the common optical lens only considers the optimization of the visible light wave band, so that the ideal imaging surface of the visible light wave band and the ideal imaging surface of the infrared light wave band have larger distance, namely the focusing of the visible light wave band is clear, and the imaging of the infrared light wave band is blurred. The camera lens is focusing at every turn also can not just be transferred to ideal imaging surface, always has certain tolerance, the utility model discloses combine the experience value that the focus definition of the bi-pass camera lens of visible light spectrum wave band for being 380nm-780nm, infrared light spectrum wave band 920nm-960nm obtained to be less than 0.02um for visible light wave band ideal imaging surface and near infrared light ideal imaging surface distance for the bi-pass camera lens possesses good confocal performance.
Furthermore, the photosensitive chip is in an RGGB mode, and the near-infrared light transmittance of the micro-array lens of the photosensitive chip in the RGGB mode is larger than 10%, so that the photosensitive chip has sufficient near-infrared light imaging capability.
Furthermore, the light source spectrum wave band of the infrared LED light supplement lamp is 920nm-960nm, near infrared light of the wave band cannot stimulate human eyes, and better experience can be brought to users.
The utility model has the advantages of it is following:
1. by adopting the design of the double-pass lens with double light-transmitting spectral bands with visible light spectral bands of 380nm-780nm and infrared spectral bands of 920nm-960nm, the photosensitive chip and the image processor can respectively obtain clear color images and gray level images under the conditions of sufficient external environment brightness and dark external environment, and can finish high-quality face recognition;
2. the distance between the visible light wave band ideal imaging surface of the bi-pass lens and the near infrared light ideal imaging surface is less than 0.02um, and the bi-pass lens has good confocal performance;
3. the method comprises the following steps that a sensitive chip in an RGGB mode capable of sensing near infrared light (920nm-960nm) is adopted, and the near infrared light transmittance of a micro-array lens of the sensitive chip in the RGGB mode is more than 10%, so that the sensitive chip has enough near infrared light imaging capability, and the definition of a gray image under the condition of low illumination is ensured;
4. the light source spectrum wavelength band of the infrared light supplement lamp is 920nm-960nm, the central wavelength is 940nm, stimulation to human eyes can be avoided, and user experience is enhanced.
Drawings
Fig. 1 is a schematic diagram of the module structure of the present invention.
Fig. 2 is a schematic diagram of a transmission spectrum of the bi-pass lens of the present invention.
Fig. 3 is a schematic diagram of a transmission spectrum of a conventional pure infrared lens.
Fig. 4 is a schematic diagram of a transmission spectrum of a conventional visible light lens.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, wherein the embodiments of the present invention are described in detail with reference to the accompanying drawings, for example, the shapes and structures of the respective members, the mutual positions and connection relationships between the respective portions, the functions and operation principles of the respective portions, and the like.
Like fig. 1, fig. 2, the utility model discloses a visible light and infrared light bi-pass vehicle-mounted face identification camera, including bi-pass camera lens 1 that has visible light and near infrared light bi-pass light spectrum band, sensitization chip 2, image processor (ISP)3, serializer 4 and infrared LED light filling lamp 5, sensitization chip 2 sets up in bi-pass camera lens 1's imaging area, and sensitization chip 2 is connected with image processor 3 communication, and image processor 3 is connected with serializer 4 communication, and serializer 4 is connected with 5 electricity of infrared LED light filling lamp.
The utility model discloses a theory of operation does: the utility model discloses when using, serializer 4 is connected with navigation host computer end 6, navigation host computer end passes through IIC and accomplishes visit and control to serializer 4 and image processor 5, under the sufficient condition of such ambient brightness daytime, the visible light intensity and the near infrared light that see through bi-pass camera lens 1 are very weak, at this moment, sensitization chip 2 is very low to the sensitization efficiency of near infrared light, near infrared interference is very little, brightness register numerical value that navigation host computer end 6 read through visiting image processor 3 can be very high, navigation host computer end 6 closes through serializer 4 control infrared LED light filling lamp 5, sensitization chip 2 images into the colour image, and simultaneously, sensitization chip 2 can carry out enhancement processing to the image, and transmit the image for navigation host computer end 6 through serializer 4, navigation host computer end 6 is integrated with face identification algorithm, thereby carry out face identification and use; under such dark environment at night, the visible light component that sees through bi-pass camera lens 1 is very little, at this moment, the luminance register numerical value that navigation host computer end 6 read through visiting image processor 3 is low, navigation host computer end 6 passes through serializer 4 and enables drive control infrared LED light filling lamp 5 through GPIO mouth and opens and carry out the light filling, can also fall to zero through image processor 3 with the color saturation component of camera simultaneously, 2 formation of image of sensitization chip are clear grey map behind the light filling, thereby accomplish the face identification under the low light level environment and use.
In a preferred embodiment, as shown in fig. 2, in order to ensure the clarity of the color image and the grayscale image of the camera, the visible light spectrum band of the dual-pass lens 1 is 380nm-780nm, and the infrared light spectrum band of the dual-pass lens 1 is 920nm-960 nm. For comparison, as shown in fig. 3 and fig. 4, there are schematic diagrams of the transmission spectra of the conventional ordinary pure infrared lens and the conventional visible light lens, respectively. In FIGS. 2, 3, and 4, the abscissa represents the spectral band (unit: nm), and the ordinate represents the spectral transmittance (unit:%).
Preferably, the distance between the ideal imaging surface of the double-pass lens 1 in the visible light band and the ideal imaging surface of the near-infrared light band is less than 0.02 um. Wherein the ideal imaging plane is defined as: the positive lens has a convergence effect on light rays, the negative lens has a divergence effect on the light rays, the lens is a combination of the positive lens and the negative lens, and the final lens is a plane which needs to converge the light rays and has the best light ray convergence effect at different view field angles, namely an ideal imaging plane. The lens material has different refractive indexes for different spectrum wave bands, and the design of the common optical lens only considers the optimization of the visible light wave band, so that the ideal imaging surface of the visible light wave band and the ideal imaging surface of the infrared light wave band have larger distance, namely the focusing of the visible light wave band is clear, and the imaging of the infrared light wave band is blurred. The camera lens is focusing at every turn also can not just be transferred to ideal imaging surface, always has certain tolerance, the utility model discloses combine the experience value that the focus definition of visible light spectrum wave band be 380nm-780nm, infrared light spectrum wave band 920nm-960 nm's bi-pass camera lens 1 obtained to be less than 0.02um for visible light wave band ideal imaging surface and near infrared light ideal imaging surface distance for the bi-pass camera lens possesses good confocal performance.
Preferably, the photosensitive chip 2 is an RGGB-mode photosensitive chip, and the near-infrared transmittance of the micro-array lens of the RGGB-mode photosensitive chip 2 is greater than 10%, so that the photosensitive chip 2 has sufficient near-infrared imaging capability.
Preferably, the light source spectrum wavelength band of the infrared LED supplementary lighting lamp 5 is 920nm to 960nm, and near infrared light of the wavelength band does not irritate human eyes, so that better experience can be brought to users.
The present invention has been described in detail with reference to the accompanying drawings, and it is apparent that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.
Claims (5)
1. The utility model provides a visible light and infrared light bi-pass vehicle-mounted face identification camera, its characterized in that is including bi-pass camera lens, sensitization chip, image processor, serializer and the infrared LED light filling lamp that has visible light and the two translucent spectrum wave bands of near-infrared light, the sensitization chip sets up in the imaging area of bi-pass camera lens, the sensitization chip is connected with the image processor communication, image processor is connected with the serializer communication, the serializer with infrared LED light filling lamp electricity is connected.
2. The visible light and infrared light double-pass vehicle-mounted face recognition camera as claimed in claim 1, wherein the visible light spectral band of the double-pass lens is 380nm-780nm, and the infrared light spectral band of the double-pass lens is 920nm-960 nm.
3. The visible light and infrared light bi-pass vehicle-mounted face recognition camera as claimed in claim 2, wherein a distance between an ideal imaging surface of a visible light band and an ideal imaging surface of a near infrared light band of the bi-pass lens is less than 0.02 um.
4. The visible light and infrared light double-pass vehicle-mounted face recognition camera according to claim 1, 2 or 3, characterized in that the photosensitive chip is an RGGB-mode photosensitive chip, and the near-infrared light transmittance of a micro-array lens of the RGGB-mode photosensitive chip is greater than 10%.
5. The visible light and infrared light bi-pass vehicle-mounted face recognition camera as claimed in claim 4, wherein a light source spectrum wavelength band of the infrared LED supplementary lighting lamp is 920nm-960 nm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921213899.XU CN210469476U (en) | 2019-07-30 | 2019-07-30 | Visible light and infrared light bi-pass vehicle-mounted face recognition camera |
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| CN201921213899.XU CN210469476U (en) | 2019-07-30 | 2019-07-30 | Visible light and infrared light bi-pass vehicle-mounted face recognition camera |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113537188A (en) * | 2021-05-31 | 2021-10-22 | 浙江大华技术股份有限公司 | Face snapshot method, face snapshot system and computer-readable storage medium |
| WO2021244414A1 (en) * | 2020-06-05 | 2021-12-09 | 吉林求是光谱数据科技有限公司 | Facial recognition monitoring system based on spectrum and multi-band fusion, and recognition method |
-
2019
- 2019-07-30 CN CN201921213899.XU patent/CN210469476U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021244414A1 (en) * | 2020-06-05 | 2021-12-09 | 吉林求是光谱数据科技有限公司 | Facial recognition monitoring system based on spectrum and multi-band fusion, and recognition method |
| US11443550B2 (en) | 2020-06-05 | 2022-09-13 | Jilin Qs Spectrum Data Technology Co. Ltd | Face recognition monitoring system based on spectrum and multi-band fusion and recognition method using same |
| CN113537188A (en) * | 2021-05-31 | 2021-10-22 | 浙江大华技术股份有限公司 | Face snapshot method, face snapshot system and computer-readable storage medium |
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