CN106254738A - Dual image acquisition system and image-pickup method - Google Patents
Dual image acquisition system and image-pickup method Download PDFInfo
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- CN106254738A CN106254738A CN201610718496.5A CN201610718496A CN106254738A CN 106254738 A CN106254738 A CN 106254738A CN 201610718496 A CN201610718496 A CN 201610718496A CN 106254738 A CN106254738 A CN 106254738A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
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Abstract
The invention discloses a kind of dual image acquisition system and image-pickup method.Wherein, described system includes the first image collecting device, the second image collecting device and semi-transparent semi-reflecting lens, the primary optic axis of described first image collecting device is orthogonal with the second optical axis of described second image collecting device, and described semi-transparent semi-reflecting lens is arranged at the intersection of described primary optic axis and described second optical axis, described primary optic axis overlaps after described semi-transparent semi-reflecting lens reflects with described second optical axis after described semi-transparent semi-reflecting lens transmission；Described first image collecting device is for gathering the first image of the target obtained through described semi-transparent semi-reflecting lens transmission；Described second image collecting device is for gathering the second image of the described target obtained through the reflection of described semi-transparent semi-reflecting lens.By the way, it is possible to obtain the dual image collection effect of zero pixel parallax.
Description
Technical field
The present invention relates to acquisition technology field, particularly relate to dual image acquisition system and image-pickup method.
Background technology
Owing to different types of image can reflect the different information of object, for realizing different application, often need to obtain
Polytype image of object, such as, obtain coloured image and the depth image of object.Owing to coloured image is only capable of displaying mesh
Target two-dimensional signal, but but there is extremely abundant color character, it is adapted to do identification mission；And depth image can be directly
The three-dimensional shape features of reflection object, it is possible to achieve the tasks such as three-dimensional modeling that 2D image cannot realize and 3D identification.Therefore,
The combination of the two can largely promote range of application.
At present, different types of image needs to gather acquisition respectively by different types of camera, is specially two
Camera parallel interval is placed, thus the image that both collect also exists pixel parallax.Therefore, the two kinds of images gathered are being carried out
Before in conjunction with, generally require the pixel parallax eliminated between image, otherwise may result in the distortion of image after combination.
Summary of the invention
The technical problem that present invention mainly solves is to provide dual image acquisition system and image-pickup method, it is possible to realize zero
The dual image collection of pixel parallax.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide a kind of dual image acquisition system,
It is characterized in that, including the first image collecting device, the second image collecting device and semi-transparent semi-reflecting lens, described first image is adopted
The primary optic axis of acquisition means is orthogonal with the second optical axis of described second image collecting device, and described semi-transparent semi-reflecting lens is arranged at institute
State the intersection of primary optic axis and described second optical axis, described primary optic axis after described semi-transparent semi-reflecting lens transmission with described second
Optical axis overlaps after described semi-transparent semi-reflecting lens reflects；
Described first image collecting device is for gathering the first image of the target obtained through described semi-transparent semi-reflecting lens transmission；
Described second image collecting device is for gathering the second of the described target obtained through the reflection of described semi-transparent semi-reflecting lens
Image.
Wherein, one in described first image collecting device and described second image collecting device is Color Image Acquisition
Device, another is laser image harvester, and one of described first image and the second image is coloured image, and another is
Laser image.
Wherein, described laser image harvester includes projecting module and image acquisition element, and described projection module is used for
To described target projective structure light pattern, described image acquisition element is for gathering the structure ray laser image of described target.
Wherein, the image procossing being connected with described first image collecting device and described second image collecting device is also included
Device, for obtaining described first image collecting device and the image of described second image acquisition device, and uses structure
Light trigonometry is calculated the depth image of described target to the structure ray laser image collected.
Wherein, the control dress being connected with described first image collecting device and described second image collecting device is also included
Put, project time and/or the frequency of described structured light patterns for controlling described projection module, and control described first image
Harvester and the acquisition time of described second image collecting device and/or frequency acquisition.
Wherein, described control device and described image processing apparatus are same circuit.
Wherein, the described system integration is in same equipment.
Wherein, the absorbance of described semi-transparent semi-reflecting lens and the scope of reflectance are 20% to 80%.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide a kind of image-pickup method, bag
Include:
Obtain first image and second of the target obtained through semi-transparent semi-reflecting lens transmission of the first image acquisition device
Second image of the described target obtained through the reflection of described semi-transparent semi-reflecting lens of image acquisition device, wherein, the first image
The primary optic axis of harvester is orthogonal with the second optical axis of described second image collecting device, and described semi-transparent semi-reflecting lens is arranged at
Described primary optic axis and the intersection of described second optical axis；
Described first image and/or described second image are processed.
Wherein, one in described first image collecting device and described second image collecting device is Color Image Acquisition
Device, another is laser image harvester, and one of described first image and the second image is coloured image, and another is
Structure ray laser image, processes described first image and/or described second image, including:
Use structure light trigonometry that the structure ray laser image collected is calculated the degree of depth of described target
Image.
The invention has the beneficial effects as follows: by the first image collecting device and the second image collecting device are carried out with optical axis
Orthogonal setting, and use semi-transparent semi-reflecting lens to be arranged on the optical axis of the orthogonal place of optical axis and two image collecting devices through semi-transparent semi-reflecting lens
Rear coincidence so that after target light is respectively by semi-transparent semi-reflecting lens transmission and reflection, arrive the first image collecting device and second
The image space that image collector postpones is identical, the first image of the i.e. first image acquisition device and the second image collector
The respective pixel of the second image putting collection is identical relative to its harvester center, therefore achieves first collected
Without pixel parallax between image and the second image.
Accompanying drawing explanation
Fig. 1 is the structural representation of dual image acquisition system one embodiment of the present invention；
Fig. 2 is the structural representation of dual image another embodiment of acquisition system of the present invention；
Fig. 3 is the structural representation of dual image acquisition system another embodiment of the present invention；
Fig. 4 is the structural representation of dual image acquisition system another embodiment again of the present invention；
Fig. 5 is the flow chart of image-pickup method one embodiment of the present invention.
Detailed description of the invention
In order to be better understood from technical scheme, below in conjunction with the accompanying drawings the embodiment of the present invention is retouched in detail
State.
The term used in embodiments of the present invention is only merely for describing the purpose of specific embodiment, and is not intended to be limiting
The present invention." a kind of ", " described " and " being somebody's turn to do " of singulative used in the embodiment of the present invention and appended claims
It is also intended to include most form, unless context clearly shows that other implications.It is also understood that term used herein
Any or all possible combination that "and/or" refers to and comprises one or more project of listing being associated.
Refer to the structural representation that Fig. 1, Fig. 1 are dual image acquisition system one embodiments of the present invention.In the present embodiment, should
Acquisition system 10 includes first image collecting device the 11, second image collecting device 12, semi-transparent semi-reflecting lens 13 and light inlet 14.
Wherein, described first image collecting device 11 and the second image collecting device 12 are not provided with on the same line, and
The primary optic axis a of the first image collecting device 11 is orthogonal with the second optical axis b of described second image collecting device 12, such as Fig. 1 institute
Show.Certainly, in other embodiments, it is possible to as shown in Figure 2.
Semi-transparent semi-reflecting lens 13 is arranged at the intersection of described primary optic axis a and described second optical axis b, and primary optic axis a and
Second optical axis b lays respectively at two opposite flanks 131 of this semi-transparent semi-reflecting lens 13 so that target light is by warp after light inlet 14
Arrive the first image collecting device 11 after semi-transparent semi-reflecting lens 13 transmission, and after semi-transparent semi-reflecting lens 13 reflects, arrive the second image adopt
Acquisition means 12, and then the above-mentioned two image collecting device image acquisition to target 20 can be realized.Specifically, primary optic axis a warp
Overlapping after described semi-transparent semi-reflecting lens reflects with described second optical axis b after the transmission of described semi-transparent semi-reflecting lens 13, such as, this is semi-transparent half years old
Anti-mirror 13 all becomes 45 degree of angles with primary optic axis a and the second optical axis b, to realize above-mentioned coincidence.
It should be noted that the optics unit that semi-transparent semi-reflecting lens of the present invention is absorbance and reflectance is all not zero
Part, the absorbance of this semi-transparent semi-reflecting lens and reflectance can be configured according to concrete application demand.Generally, by semi-transparent semi-reflecting lens
Absorbance and reflectance are disposed as between 20% to 80%, such as, if the light needed for current environment the first image collecting device
Powerful in the second image collecting device, then it is 70% by the absorbance of semi-transparent semi-reflecting lens, reflectance is 30%.Specifically apply one
In, this first image collector is set to Color Image Acquisition device, and the second image collector is set to laser image harvester, then
Absorbance is preferably set to 60%, and reflectance is set to 40%, and vice versa.
By above-mentioned setting, the first image collecting device 11 can gather the target obtained through the transmission of described semi-transparent semi-reflecting lens 13
First image of 20, the second image collecting device 12 can gather the second of the target 20 obtained through the reflection of described semi-transparent semi-reflecting lens 13
Image.
Generally, when acquisition system is provided with light tight shell, in above-mentioned harvester and semi-transparent semi-reflecting lens are placed in
Time, this acquisition system includes above-mentioned light inlet 14, and this light inlet 14 is arranged on shell；When acquisition system is without arranging shell
Time, then may not include above-mentioned light inlet 14.
Pixel parallax refers to same space three-dimensional o'clock after two image collecting device imagings, right in two images
Answer the difference that pixel is respectively relative between the displacement of respective harvester central point, if the respective pixel in two images is relative to respectively
Identical from the position of harvester central point, then it is considered as there is no pixel parallax.In the present embodiment, by by the first image collector
Put and carry out with the orthogonal setting of optical axis with the second image collecting device, and use semi-transparent semi-reflecting lens to be arranged on the orthogonal place of optical axis and two
The optical axis of image collecting device overlaps after semi-transparent semi-reflecting lens so that target light is respectively by semi-transparent semi-reflecting lens transmission and reflection
After, arrive the first image collecting device and image space that the second image collector postpones is identical, the i.e. first image collecting device
The first image gathered and the respective pixel of the second image of the second image acquisition device are relative to its harvester center
Position is identical, and such as, the c point light of target 20, after the transmission and reflection of semi-transparent semi-reflecting lens 13, arrives first along primary optic axis a
The optical center of image collecting device and then be formed at the center pixel of the first image, and arrive the second figure along the second optical axis b
As the optical center of harvester 12 and then be formed at the center pixel of the second image, therefore achieve the first figure collected
Without pixel parallax between picture and the second image.
In one embodiment, in this first image collecting device 11 and the second image collecting device 12 can be colored
Image collecting device (colour described in the present embodiment is alternatively referred to as RGB), another can be laser image harvester, such as,
First image collecting device 11 is Color Image Acquisition device, and the second image collecting device 12 is laser image harvester；Or
Person, the first image collecting device 11 is laser image harvester, and the second image collecting device 12 is Color Image Acquisition device.
Accordingly, the image that Color Image Acquisition device collects is coloured image, and laser image harvester collects image
For laser image.Certainly, in other embodiments, above-mentioned image collecting device is not limited to Color Image Acquisition device and swashs
Light image harvester, can be the sampler of existing any type image.
Further, this laser image harvester can be harvester based on other principles such as structure light or TOF.
This type harvester can be made up of a projection lens and collection camera lens, such as, as it is shown on figure 3, at the second image collector
Being set in the embodiment of structure ray laser image collecting device, structure ray laser image collecting device 12 includes projecting module 121
And image acquisition element 122, wherein projection module 121 for projecting the structure light of specific pattern, also referred to as structure light to target 20
Pattern, as it is shown on figure 3, projection module 121 passes through the light-emitting window 15 of acquisition system 10 to target projective structure light pattern.Image is adopted
Collection element is for gathering the image with this structured light patterns of target 20, the most referred to as structure ray laser image.Wherein, this projective module
Group 121 can be separately positioned or be wholely set with image acquisition element 122, when separately positioned, this projection module 121 with scheme
As the position relationship of acquisition elements 122 may be configured as having the identical or approximately uniform degree of depth to target, or projection module
121 with image acquisition element 122 be setting value to the depth difference of target.Distance between light-emitting window shown in Fig. 3 and light inlet
Less than 10cm, the above-mentioned collection compared with the target of relatively remote (typically larger than 100cm) does not results in impact.Certainly, exist
In another embodiment, this light-emitting window and light inlet are alternatively same position, i.e. light-emitting window is also light inlet.
Projection module 121 can be made up of lasing light emitter and diffraction optical element, and lasing light emitter can be the lasing light emitter of edge transmitting type
Can also be vertical cavity surface lasing light emitter, can be point source or array light source, this lasing light emitter be used for emission energy by this laser figure
The laser collected as harvester.Diffraction optical element needs to be configured of according to different structured light patterns
The functions such as collimation, beam splitting, diffusion.Said structure light pattern can be modulated striped, or is distributed irregular speckle pattern,
The light that such as lasing light emitter is launched is projected target empty by diffusion by being divided into multiple laser beam after diffraction optical element simultaneously
In between, thus form the speckle pattern of irregular alignment.Speckle center energy level needs to meet harmless requirement, therefore needs
The power of laser to be considered and the configuring condition of diffraction optical element.
The dense degree of speckle pattern have impact on the follow-up image procossing collecting laser image harvester such as
Affecting speed and precision that the depth value to image calculates, speckle particle is the most, calculates speed the slowest, but precision is the highest.Cause
This, this projection module 121 can select suitable speckle particle density according to the approximate depth of the target area of shooting image,
While ensureing to calculate speed, still there is higher computational accuracy.Certainly, this speckle particle density also can be by above-mentioned acquisition system
Calculating demand according to self and determine.
Wherein, this projection module 121 is to target area but does not limit to be the angle of flare projection speckle particle pattern with certain
's.
Above-mentioned laser image harvester concretely infrared image acquisition device, such as infrared camera, this laser image is
Infrared image, accordingly, when this harvester includes projecting module, the structured light patterns of this projection module projection is infrared knot
Structure light pattern；Or laser image harvester can be ultraviolet image harvester, such as ultraviolet-cameras, this laser image is ultraviolet
Image, accordingly, when this harvester includes projecting module, the structured light patterns of this projection module projection is ultraviolet structure light
Pattern.
Refer to Fig. 4, this acquisition system 10 also include all with the first image collecting device 11 and the second image collecting device
The image processing apparatus 16 that 12 connect and control device 17.
Wherein, image processing apparatus 16 is used for obtaining described first image collecting device and described second image collecting device
The image gathered, and the image collected is processed, such as, use the structure light trigonometry structure light to collecting
Laser image carries out being calculated the depth image of described target, the most such as, smooths, at denoising collecting image
Reason.
In the embodiment that this structured light patterns is speckle pattern, image processing apparatus 16 can be specifically for according to triangle
Method principle, by speckle particle in the speckle image that calculating collects relative to correspondence speckle particle in reference speckle pattern
Deviation value calculates the depth value of target, and wherein, this reference speckle pattern advances with the projection module set to setting
The planar projective reference speckle pattern of distance, and utilize the image acquisition element set to gather the reference speckle pattern of this plane
Case obtains, after above-mentioned " setting " is interpreted as once setting, when the follow-up collection carrying out this laser image also
This image acquisition element and projection module will not be moved.
Further, image processing apparatus 16, also can be according to the degree of depth of this target after obtaining the depth image of target
The coloured image of the target that image and Color Image Acquisition device collect is combined, and obtains the three-dimensional information of this target.
Certainly, above-mentioned laser camera may not include projection module, and the laser image obtained is not necessarily for the calculating of depth image, this
Any restriction is not done in the bright structure to image collecting device and the process of image collected.
Control device 17 for controlling adopting of described first image collecting device 11 and described second image collecting device 12
Collection time and/or frequency acquisition.For the collection effect reached and avoid follow-up unnecessary calculating, the first image can be adopted
Acquisition means and the second image acquisition element are arranged to synchronous acquisition and collection frame number is identical, the first image so obtained and second
Image can guarantee that relation one to one, it is simple to successive image processes.
When laser image harvester includes projecting module, control device 17 is additionally operable to control projection module 121 and projects
The time of structured light patterns and/or frequency.In one embodiment, the projection time of this projection module 121 may be configured as swashing with this
The acquisition time of light image harvester synchronizes, and frequency acquisition is identical.
It is understood that acquisition system also may not include above-mentioned image processing apparatus and controls device, at above-mentioned image
The function that reason device and control device are realized can be realized by the external equipment being connected with acquisition system.And, at above-mentioned image
Reason device and control device by different circuit realiration, or can be realized by same circuit such as same processor.
It addition, above-mentioned acquisition system can be integrated in same equipment, the device as included by above-mentioned acquisition system is respectively provided with
In a shell.Certainly, above-mentioned acquisition system is also separated into multiple equipment, such as, the first image collecting device, the second image
Harvester, image processing apparatus and control device are respectively independent equipment.
In above-described embodiment, the image acquisition target surface of this first image collecting device and the second image collecting device can be set
Equal in magnitude, resolution is identical and focal length is identical.Or, the first image collecting device and the image of the second image collecting device
At least one gathered in target surface size, resolution and focal length differs, the target surface size of the such as first image collecting device
And resolution is all big than the second image collecting device element, now, image processing apparatus 16 is obtaining the first image and second
After image, described first image and/or the second image can be carried out interpolation, dividing processing so that described first image and second
The target area that image is corresponding is identical, and image size is the most identical with resolution.Due to the first image collecting device and the second figure
As harvester exists error when assembling, therefore the image of this first image collecting device above-mentioned and the second image collecting device is adopted
Target surface is equal in magnitude, resolution is identical and focal length is identical is interpreted as collection: this first image collecting device and the second image are adopted
Image acquisition target surface size, resolving power and the focal length of acquisition means is identical in the range of allowable error.
And, above-mentioned image includes photo or video, when above-mentioned image is video, and described first image collecting device
Synchronize with the frequency acquisition of the second image collecting device, if or the adopting of the first image collecting device and the second image collecting device
Collection frequency is asynchronous, then obtain the video image that frequency is consistent by the way of image interpolation.
Refer to the flow chart that Fig. 5, Fig. 5 are image-pickup method one embodiments of the present invention.In the present embodiment, this image is adopted
Diversity method is applied to above-mentioned acquisition system, comprises the following steps:
S51: utilize the first image of the target that the first image acquisition device obtains, and profit through semi-transparent semi-reflecting lens transmission
With the second image of the described target that the second image acquisition device obtains through the reflection of described semi-transparent semi-reflecting lens.
Wherein, as described in above-described embodiment, the primary optic axis of the first image collecting device and described second image collector
The second optical axis put is orthogonal, and described semi-transparent semi-reflecting lens is arranged at the intersection of described primary optic axis and described second optical axis, institute
State primary optic axis to overlap after described semi-transparent semi-reflecting lens reflects with described second optical axis after described semi-transparent semi-reflecting lens transmission.
S52: described first image and/or described second image are processed.
Such as, one in described first image collecting device and described second image collecting device is Color Image Acquisition
Device, another is laser image harvester, and one of described first image and the second image is coloured image, and another is
Structure ray laser image.This S52 includes: use structure light trigonometry to calculate the structure ray laser image collected
Depth image to described target.
The most such as, this S52 also includes: to collect image smooth, denoising；And/or, to described first figure
Picture and/or the second image carry out interpolation, dividing processing.
It is understood that in other embodiments, this acquisition method also may not include above-mentioned S52.
In such scheme, set so that optical axis is orthogonal by the first image collecting device and the second image collecting device are carried out
Put, and use semi-transparent semi-reflecting lens to be arranged on the optical axis of the orthogonal place of optical axis and two image collecting devices weight after semi-transparent semi-reflecting lens
Close so that after target light is respectively by semi-transparent semi-reflecting lens transmission and reflection, arrive the first image collecting device and the second image
Image space after harvester is identical, and the first image and second image collecting device of the i.e. first image acquisition device are adopted
The respective pixel of the second image of collection is identical relative to its harvester center, therefore achieves the first image collected
And second between image without pixel parallax, and then can realize utilizing the first image and the second image to obtain accurate target information such as
Colour and depth information etc..
The foregoing is only embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilization is originally
Equivalent structure or equivalence flow process that description of the invention and accompanying drawing content are made convert, or are directly or indirectly used in what other were correlated with
Technical field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. a dual image acquisition system, it is characterised in that include the first image collecting device, the second image collecting device and
Second optical axis of semi-transparent semi-reflecting lens, the primary optic axis of described first image collecting device and described second image collecting device is just
Handing over, and described semi-transparent semi-reflecting lens is arranged at the intersection of described primary optic axis and described second optical axis, described primary optic axis is through institute
Overlap after described semi-transparent semi-reflecting lens reflects with described second optical axis after stating semi-transparent semi-reflecting lens transmission；
Described first image collecting device is for gathering the first image of the target obtained through described semi-transparent semi-reflecting lens transmission；
Described second image collecting device is for gathering the second image of the described target obtained through the reflection of described semi-transparent semi-reflecting lens.
System the most according to claim 1, it is characterised in that described first image collecting device and described second image are adopted
In acquisition means one is Color Image Acquisition device, and another is laser image harvester, described first image and second
One of image is coloured image, and another is laser image.
System the most according to claim 2, it is characterised in that described laser image harvester includes projecting module and figure
As acquisition elements, described projection module is for described target projective structure light pattern, and described image acquisition element is used for gathering
The structure ray laser image of described target.
System the most according to claim 3, it is characterised in that also include and described first image collecting device and described
The image processing apparatus that two image collecting devices connect, is used for obtaining described first image collecting device and described second image is adopted
The image that acquisition means gathers, and it is described to use structure light trigonometry to be calculated the structure ray laser image collected
The depth image of target.
System the most according to claim 4, it is characterised in that also include and described first image collecting device and described
Two image collecting devices connect control device, for control described projection module project described structured light patterns time and/
Or frequency, and control described first image collecting device and the acquisition time of described second image collecting device and/or collection
Frequency.
System the most according to claim 5, it is characterised in that described control device and described image processing apparatus are same
Circuit.
7. according to the system described in any one of claim 1 to 6, it is characterised in that the described system integration is in same equipment.
8. according to the system described in any one of claim 1 to 6, it is characterised in that the absorbance of described semi-transparent semi-reflecting lens is with anti-
The scope penetrating rate is 20% to 80%.
9. an image-pickup method, it is characterised in that including:
Utilize the first image of the target that the first image acquisition device obtains through semi-transparent semi-reflecting lens transmission, and utilize the second figure
The second image as the described target that harvester collection obtains through the reflection of described semi-transparent semi-reflecting lens；
Wherein, the primary optic axis of the first image collecting device is orthogonal with the second optical axis of described second image collecting device, and institute
Stating semi-transparent semi-reflecting lens and be arranged at the intersection of described primary optic axis and described second optical axis, described primary optic axis is through described semi-transparent half
Overlap after described semi-transparent semi-reflecting lens reflects with described second optical axis after anti-mirror transmission.
Method the most according to claim 9, it is characterised in that described first image collecting device and described second image
In harvester one is Color Image Acquisition device, and another is laser image harvester, described first image and
One of two images is coloured image, and another is structure ray laser image,
Described method also includes:
Use structure light trigonometry that the structure ray laser image collected is calculated the depth image of described target.
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| CN107105217A (en) * | 2017-04-17 | 2017-08-29 | 深圳奥比中光科技有限公司 | Multi-mode depth calculation processor and 3D rendering equipment |
| CN107124604A (en) * | 2017-06-29 | 2017-09-01 | 诚迈科技（南京）股份有限公司 | A kind of utilization dual camera realizes the method and device of 3-D view |
| CN107564051A (en) * | 2017-09-05 | 2018-01-09 | 歌尔股份有限公司 | A kind of depth information acquisition method and system |
| CN107707802A (en) * | 2017-11-08 | 2018-02-16 | 信利光电股份有限公司 | A kind of camera module |
| CN108648225A (en) * | 2018-03-31 | 2018-10-12 | 深圳奥比中光科技有限公司 | Target image obtains System and method for |
| CN108664892A (en) * | 2018-04-03 | 2018-10-16 | Oppo广东移动通信有限公司 | Image Acquisition structure and electronic device |
| WO2021017682A1 (en) * | 2019-07-31 | 2021-02-04 | 华为技术有限公司 | Optical module |
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