CN209488691U - A kind of local auto-adaptive imaging system - Google Patents
A kind of local auto-adaptive imaging system Download PDFInfo
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- CN209488691U CN209488691U CN201920558636.6U CN201920558636U CN209488691U CN 209488691 U CN209488691 U CN 209488691U CN 201920558636 U CN201920558636 U CN 201920558636U CN 209488691 U CN209488691 U CN 209488691U
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Abstract
The embodiment of the present application discloses a kind of local auto-adaptive imaging system, the brightness of the optical control element on the optical modulator of illumination subsystems is controlled by control system, so that illumination subsystems issue the illuminating bundle of part to target object, the imaging beam of the part of target object reflection is received via camera subsystem again, it is analyzed using control system is sent to after the imaging sensor realization topography acquisition of camera subsystem, the global contrast of image can only be improved by solving existing scheme all, it cannot be guaranteed that the technical issues of the raising of the local contrast of image.
Description
Technical field
This application involves technical field of imaging more particularly to a kind of local auto-adaptive imaging systems.
Background technique
The imaging sensor of existing optical vision system is the light based on CCD or cmos semiconductor sensor technology mostly
Power conversion device, the dynamic range of this kind of semiconductor transducers is all than relatively limited.According to the dynamic range of semiconductor transducer
Definition it is found that the relatively straightforward method of ratio for improving semiconductor transducer dynamic range is to improve full trap charge or reduce noise.
But it due to the limitation of existing CCD and cmos semiconductor sensor technology, improves full trap charge and generally means that increase is partly led
The photosensitive unit of body sensor, and reduce noise and usually require semiconductor technology with high costs and extremely complex circuit, very
To the additional active refrigeration measure of needs.In addition to this, the high dynamic range of semiconductor transducer also needs corresponding high-order modulus
The support of conversion circuit.
In order to improve the dynamic range of vision system, some semiconductor transducers use multiple exposure and reading or one
It is secondary to expose the mode repeatedly read.The essence of both technologies is all by multi collect signal and by various methods by these
The image of a panel height dynamic range (HDR) is exported after signal progress fusion treatment.Even if being pointed out that using HDR technology
Imaging sensor, its dynamic range still cannot be met the requirements under many application scenarios.
For entire vision system, usually said dynamic range refers to the dynamic range of broad sense, i.e., in scene most
The tone ratio of bright and most dark surface in the picture, i.e. DRsystem=20Log [Smax/Smin], wherein SmaxAnd SminRespectively
The tone value of most bright and most dark surface in the picture in scene.The contrast (C) of image and the dynamic range of broad sense have directly
Connection, specially C=2 [Smax-Smin]/[Smax+Smin].It can be seen that the small system of dynamic range is difficult to obtain contrast
High image.To many vision applications, picture contrast, especially Image Warping are a very important indexs,
Because Image Warping has direct shadow to the core processing step of the intelligent visions system such as feature extraction and image segmentation
It rings.
In the case where given image sensor, picture contrast (for example automatic can be exposed by aperture and time for exposure
Light) etc. the adjustment of imaging parameters and obtain a degree of raising.In the case where scene is excessively dark and needs the time for exposure short, also
Picture contrast can be improved in such a way that additional light source illuminates (such as flash lamp).The adjustment of aperture and time for exposure are to image
Influence be of overall importance.It should be pointed out that usually additional lighting source can only also improve the global illumination of entire scene
Situation.So these schemes can only all improve the global contrast of image, it cannot be guaranteed that the raising of the local contrast of image.
Therefore it provides a kind of local auto-adaptive imaging system is that those skilled in the art are badly in need of.
Summary of the invention
The embodiment of the present application provides a kind of local auto-adaptive imaging system, and image can only all be improved by solving existing scheme
Global contrast, it cannot be guaranteed that the technical issues of the raising of the local contrast of image.
This application provides a kind of local auto-adaptive imaging systems, comprising:
Illumination subsystems, camera subsystem and control system；
The illumination subsystems include the light source being arranged successively, the first lens group, optical modulator and projection lens；
The camera subsystem includes the imaging sensor being arranged successively, optically filtering piece and imaging lens；
Wherein, by the illumination path that is formed between the illumination subsystems and target object and by the camera subsystem with
The imaging optical path formed between the target object is coaxial；
The control system is connect with the optical modulator and described image sensor respectively, and the control system is for controlling
It makes the brightness of the optical control element on the optical modulator and obtains the image of described image sensor acquisition.
It optionally, further include the second lens group；
Second lens group is set between the projection lens and the imaging lens；
The illuminating bundle and the imaging lens for by second lens group projection lens being issued are received
Imaging beam is coaxial.
Optionally, second lens group specifically includes:
Semi-transparent semi-reflecting eyeglass and light combination lens；
The projection lens is set to the side of the semi-transparent semi-reflecting eyeglass, coaxial with the light combination lens；
The imaging lens are set to the other side of the semi-transparent semi-reflecting eyeglass；
The illuminating bundle that the projection lens issues passes sequentially through the semi-transparent semi-reflecting eyeglass and the light combination vertical lens
Expose to the target object；
The imaging beam of the target object reflection is vertically reflected through the light combination lens, by the semi-transparent semi-reflecting eyeglass
The imaging lens are vertically injected in reflection.
Optionally, the illumination subsystems specifically include: the light source, the light beam for separating the light source sending and institute
State the light beam that optical modulator is reflected the first lens group and the projection lens.
Optionally, the optical modulator is specially DMD or LCoS.
As can be seen from the above technical solutions, the embodiment of the present application has the advantage that
The application controls the brightness of the optical control element on the optical modulator of illumination subsystems by control system, so that illumination
Subsystem to target object issue part illuminating bundle, then via camera subsystem receive target object reflection part at
As light beam, is analyzed, solved using control system is sent to after the imaging sensor realization topography acquisition of camera subsystem
Existing scheme of having determined can only all improve the global contrast of image, it cannot be guaranteed that the technology of the raising of the local contrast of image is asked
Topic.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is an a kind of structural schematic diagram of local auto-adaptive imaging system provided by the present application；
Fig. 2 is an a kind of light path schematic diagram of local auto-adaptive imaging system provided by the present application.
Specific embodiment
The embodiment of the present application provides a kind of local auto-adaptive imaging system, and image can only all be improved by solving existing scheme
Global contrast, it cannot be guaranteed that the technical issues of the raising of the local contrast of image.
To enable application purpose, the feature, advantage of the application more obvious and understandable, below in conjunction with the application
Attached drawing in embodiment, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that disclosed below
Embodiment be only some embodiments of the present application, and not all embodiment.Based on the embodiment in the application, this field
Those of ordinary skill's all other embodiment obtained without making creative work belongs to the application protection
Range.
Fig. 1 and Fig. 2 are please referred to, this application provides a kind of one embodiment of local auto-adaptive imaging system, comprising:
Illumination subsystems 1, camera subsystem 2 and control system 3；
The illumination subsystems 1 include light source 11, the first lens group 12, optical modulator 13 and the projection lens being arranged successively
First 14；
The camera subsystem 2 includes imaging sensor 21, optically filtering piece 22 and the imaging lens 23 being arranged successively；
Wherein, by the illumination path that is formed between the illumination subsystems 1 and target object and by the camera subsystem 2
The imaging optical path formed between the target object is coaxial；
The control system 3 is connect with the optical modulator 13 and described image sensor 21 respectively, the control system 3
For controlling the brightness of the optical control element on the optical modulator 13 and obtaining the image of the acquisition of described image sensor 21.
It further, further include the second lens group 4；
Second lens group 4 is set between the projection lens 14 and the imaging lens 23；
It is connect by the illuminating bundle that second lens group 4 issues the projection lens 14 with the imaging lens 23
The imaging beam of receipts is coaxial.
Further, second lens group 4 specifically includes:
Semi-transparent semi-reflecting eyeglass 41 and light combination lens 42；
The projection lens 14 is set to the side of the semi-transparent semi-reflecting eyeglass 41, coaxial with the light combination lens 42；
The imaging lens 23 are set to the other side of the semi-transparent semi-reflecting eyeglass 41；
The illuminating bundle that the projection lens 14 issues passes sequentially through the semi-transparent semi-reflecting eyeglass 41 and the light combination lens
42 vertical irradiations are to the target object；
The imaging beam of the target object reflection is vertically reflected through the light combination lens 42, by the semi-transparent semi-reflecting lens
Piece 41, which reflects, vertically injects the imaging lens 23.
Further, the illumination subsystems 1 specifically include: the light source 11 is issued for separating the light source 11
The first lens group 12 and the projection lens 14 for the light beam that light beam and the optical modulator 13 are reflected.
Further, the optical modulator 13 is specially DMD or LCoS.
It should be noted that Fig. 1 and Fig. 2 show a kind of structure chart of local auto-adaptive imaging system provided by the present application
And index path, by the control to DMD or the optical control element of LCoS, so that the brightness of illuminating bundle I1 and illuminating bundle I2 are not
Together, so that incident beam corresponding region T1 and T2 different by intensity on target object, is realized on spatial position
Local lighting.
By the illumination path formed between the illumination subsystems 1 and target object and by the camera subsystem 2 and institute
It is coaxial to state the imaging optical path formed between target object, if not coaxial, the optical control element and imaging sensor of optical modulator 13
The corresponding relationship of 21 pixel becomes highly difficult.When illumination path and coaxial imaging optical path, the corresponding relationship of the two then not by
The distance of target object influences.
To realize illumination path and a kind of coaxial mode of imaging optical path in Fig. 2, that is, allow illumination path and imaging optical path total
Coaxial manner with the second lens group 4, this common sparing lens is more complicated in optical design, but can make entire office
Portion's self adaptive imaging system compact is conducive to the volume and cost that reduce local auto-adaptive imaging system.
Light source 11 is specially broad spectrum light source and optical splitter combination or at least one narrow spectral combination light source.
The application controls the brightness of the optical control element on the optical modulator of illumination subsystems by control system, so that illumination
Subsystem to target object issue part illuminating bundle, then via camera subsystem receive target object reflection part at
As light beam, is analyzed, solved using control system is sent to after the imaging sensor realization topography acquisition of camera subsystem
Existing scheme of having determined can only all improve the global contrast of image, it cannot be guaranteed that the technology of the raising of the local contrast of image is asked
Topic.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
The above, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to before
Embodiment is stated the application is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. a kind of local auto-adaptive imaging system characterized by comprising
Illumination subsystems, camera subsystem and control system；
The illumination subsystems include the light source being arranged successively, the first lens group, optical modulator and projection lens；
The camera subsystem includes the imaging sensor being arranged successively, optically filtering piece and imaging lens；
Wherein, by the illumination path that is formed between the illumination subsystems and target object and by the camera subsystem with it is described
The imaging optical path formed between target object is coaxial；
The control system is connect with the optical modulator and described image sensor respectively, and the control system is for controlling institute
It states the brightness of the optical control element on optical modulator and obtains the image of described image sensor acquisition.
2. local auto-adaptive imaging system according to claim 1, which is characterized in that further include the second lens group；
Second lens group is set between the projection lens and the imaging lens；
The illuminating bundle for by second lens group projection lens being issued and the received imaging of the imaging lens
Light beam is coaxial.
3. local auto-adaptive imaging system according to claim 2, which is characterized in that second lens group is specifically wrapped
It includes:
Semi-transparent semi-reflecting eyeglass and light combination lens；
The projection lens is set to the side of the semi-transparent semi-reflecting eyeglass, coaxial with the light combination lens；
The imaging lens are set to the other side of the semi-transparent semi-reflecting eyeglass；
The illuminating bundle that the projection lens issues passes sequentially through the semi-transparent semi-reflecting eyeglass and light combination vertical lens irradiation
To the target object；
The imaging beam of the target object reflection is vertically reflected through the light combination lens, is reflected by the semi-transparent semi-reflecting eyeglass
Vertically inject the imaging lens.
4. local auto-adaptive imaging system according to claim 3, which is characterized in that the illumination subsystems specifically wrap
It includes: the first lens group of the light beam that the light source, the light beam for separating the light source sending and the optical modulator are reflected,
And the projection lens.
5. local auto-adaptive imaging system according to claim 4, which is characterized in that the optical modulator is specially DMD
Or LCoS.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920558636.6U CN209488691U (en) | 2019-04-23 | 2019-04-23 | A kind of local auto-adaptive imaging system |
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| CN201920558636.6U CN209488691U (en) | 2019-04-23 | 2019-04-23 | A kind of local auto-adaptive imaging system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951649A (en) * | 2019-04-23 | 2019-06-28 | 深圳市思锐视科技有限公司 | A kind of local auto-adaptive imaging system and local auto-adaptive image formation control method |
| CN113253265A (en) * | 2020-12-16 | 2021-08-13 | 航天科工微电子***研究院有限公司 | Tomography method based on TIR prism steering common-aperture emission |
-
2019
- 2019-04-23 CN CN201920558636.6U patent/CN209488691U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951649A (en) * | 2019-04-23 | 2019-06-28 | 深圳市思锐视科技有限公司 | A kind of local auto-adaptive imaging system and local auto-adaptive image formation control method |
| CN109951649B (en) * | 2019-04-23 | 2024-03-01 | 光沦科技(深圳)有限公司 | Local self-adaptive imaging system and local self-adaptive imaging control method |
| CN113253265A (en) * | 2020-12-16 | 2021-08-13 | 航天科工微电子***研究院有限公司 | Tomography method based on TIR prism steering common-aperture emission |
| CN113253265B (en) * | 2020-12-16 | 2024-03-29 | 航天科工微电子***研究院有限公司 | Tomographic imaging method based on TIR prism steering common aperture emission |
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Address after: Room 04, 1401 / F, International Students Pioneer Building, No.29, Gaoxin South Ring Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Guanglun Technology (Shenzhen) Co.,Ltd. Address before: Room 1404, phase 1, International Students Pioneer Building, 29 Gaoxin South Ring Road, Nanshan District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN SEIRIOS TECHNOLOGY Co.,Ltd. |