CN107734327A - A kind of brilliant synchrotron method of multi-cam module - Google Patents
A kind of brilliant synchrotron method of multi-cam module Download PDFInfo
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- CN107734327A CN107734327A CN201711074022.2A CN201711074022A CN107734327A CN 107734327 A CN107734327 A CN 107734327A CN 201711074022 A CN201711074022 A CN 201711074022A CN 107734327 A CN107734327 A CN 107734327A
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- camera
- cam module
- light source
- brightness
- brightness value
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
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- Health & Medical Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention discloses a kind of brilliant synchrotron method of multi-cam module, including：Step 1：One multi-cam module and a light source are provided, wherein, the multi-cam module and/or light source are moveable, and the multi-cam module is placed under the light source；Step 2：Obtain standard exposure line number；Step 3：Mobile the multi-cam module and/or light source, make each camera in the multi-cam module respectively under the light source, be exposed on the basis of standard exposure line number, obtain the brightness value of each camera；Step 4：Using the brightness value of one of camera as normal brightness value, the brightness offset value of other cameras is calculated；Step 5：Brightness offset value is burned onto in corresponding camera.The brilliant synchrotron method carries out compensation for calibrating errors by the brightness to each camera, brightness of image of each camera in shooting is kept highly consistent, and with the high advantage of low cost, strong operability, light source utilization rate.
Description
Technical field
The present invention relates to field of photography, more particularly to a kind of brilliant synchrotron method of multi-cam module.
Background technology
It has been difficult the needs for meeting people that a camera is integrated on smart machine, and different work(are carried out by multiple cameras
Energy combination, the multi-cam module that can complete complex task, certainly will be appeared on increasing smart machine.Multi-cam mould
Group is cooperated by multiple cameras, it is desirable to which the brightness of image of each camera is consistent, therefore is needed before dispatching from the factory pair
The brightness of each camera carries out compensation for calibrating errors.
Due to all different with multiple cameras, quantity, size and the spacing of camera etc. in multi-cam module, this
Having led to the light source that the multi-cam module of different size uses when brightness calibration compensates needs to customize, and can not share；Light
The size in source is bigger, and cost is also higher, and the cost changed after light source damage is high.These have resulted in the production of multi-cam module
Cost is higher.In addition, the stability and uniformity at the center of light source are all better than surrounding, the center of light source can not cover take the photograph more
As all cameras of head mould group, calibration accuracy are impacted.
The content of the invention
In order to solve above-mentioned the deficiencies in the prior art, the present invention provides a kind of brilliant synchrotron method of multi-cam module,
Compensation for calibrating errors is carried out by the brightness to each camera, brightness of image of each camera in shooting is kept height one
Cause, and with the high advantage of low cost, strong operability, light source utilization rate.
The technical problems to be solved by the invention are achieved by the following technical programs：
A kind of brilliant synchrotron method of multi-cam module, comprises the following steps：
Step 1：One multi-cam module and a light source are provided, wherein, the multi-cam module and/or light source are removable
, the multi-cam module is placed under the light source；
Step 2：Obtain standard exposure line number；
Step 3：Mobile the multi-cam module and/or light source, distinguish each camera in the multi-cam module
Under the light source, it is exposed on the basis of standard exposure line number, obtains the brightness value of each camera；
Step 4：Using the brightness value of one of camera as normal brightness value, the brightness offset value of other cameras is calculated；
Step 5：Brightness offset value is burned onto in corresponding camera.
Further, the step 2 includes：
Step 2.1：Mobile the multi-cam module and/light source, make one of camera in the multi-cam module
Under the light source；
Step 2.2：The brightness value of the camera is exposed to particular value；
Step 2.3：The exposure line number of the camera is obtained, as standard exposure line number.
Further, in step 2.2, the brightness value of the central area of the green channel of the camera is exposed to specific
Value.
Further, the particular value is between 150-210nit scope.
Further, the step 3 includes：
Step 3.1：Standard exposure line number is write in each camera；
Step 3.2：Mobile the multi-cam module and/or light source, make one of shooting in the multi-cam module
Head is located under the light source；
Step 3.3：The camera being pointed under the light source is exposed on the basis of standard exposure line number, obtains the camera
Brightness value；
Step 3.4：Repeat step 3.2 and step 3.3, until obtaining the brightness of all cameras in the multi-cam module
Value.
Further, in step 3, using the brightness value of the central area of the green channel of each camera corresponding to
Brightness value.
Further, in step 3, position of each camera when being exposed is both corresponded in the light source
The heart.
Further, luminance compensation parameter G-gain-n=G0/Gn of each camera, wherein：G0 is normal brightness value,
Gn is the brightness value of each camera, and n is the natural number not less than 2.
The present invention has the advantages that：The brilliant synchrotron method is with the movement multi-cam module and/or light source
Mode, each camera of respectively described multi-cam module provides light, school carried out with the brightness to each camera
Quasi- compensation, brightness of image of each camera in shooting is set to keep highly consistent；The size of the light source is not taken the photograph more by described
The influence of camera quantity, size and spacing as head mould group etc., the multi-cam module of various different sizes is common to, because
This, the utilization rate of the light source is high；The size of the light source can be made smaller, reduce production cost, moreover, each take the photograph
As head can be calibrated on the center corresponding to the light source, calibration accuracy is higher, and uniformity is also high；The light
The cost changed after the damage of source is relatively low.
Brief description of the drawings
Fig. 1 is the step block diagram of the brilliant synchrotron method of multi-cam module provided by the invention；
Fig. 2 is the block diagram step by step of the step 2 of the brilliant synchrotron method of the multi-cam module shown in Fig. 1；
Fig. 3 is step 3 block diagram step by step of the brilliant synchrotron method of the multi-cam module shown in Fig. 1.
Embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, the brilliant synchrotron method of module, comprises the following steps：
Step 1：One multi-cam module and a light source are provided, wherein, the multi-cam module and/or light source are removable
, the multi-cam module is placed under the light source；
In the step, can by setting module carrier and light source carrier, be respectively used to the fixed multi-cam module of carrying and
Light source, then by the module carrier and/or light source carrier installation realize on the mobile device the multi-cam module and/or
The movement of light source.In general, the multi-cam module is located at lower section, and shoots up, and the light source is above, and
It is luminous face-down.
Multi-cam module includes at least two cameras, and in the present embodiment, the multi-cam module has three and taken the photograph
As head, respectively the first camera, second camera and the 3rd camera.
Step 2：Obtain standard exposure line number；
Specifically, as shown in Fig. 2 the step 2 includes：
Step 2.1：Mobile the multi-cam module and/light source, make one of camera in the multi-cam module
Under the light source；
Step 2.2：The brightness value of the camera is exposed to particular value；
Step 2.3：The exposure line number of the camera is obtained, as standard exposure line number.
In the present embodiment, in step 2.1, the second camera chosen in the multi-cam module is exposed,
In step 2.2, by adjusting the exposure line number of the second camera, its brightness value is exposed to particular value, in step 2.3
In, the exposure line number after adjustment is preserved, as standard exposure line number.
In step 2.2, it is preferable that be exposed to the brightness value of the central area of the green channel of the camera specific
Value, the particular value is between 150-210nit scope.
In the present embodiment, the average brightness of the central area of the green channel of the second camera is exposed to 150-
Any value in 220nit.
Step 3：Mobile the multi-cam module and/or light source, make each camera in the multi-cam module
Respectively under the light source, it is exposed on the basis of standard exposure line number, obtains the brightness value of each camera；
In the step, when being exposed to each camera, the movement of the multi-cam module and/or light source can be controlled manually
System, can also be automatically controlled.Manually during control, testing staff controls the mobile device according to calibration procedure manually, to adjust
State the relative position of multi-cam module and light source.When automatically controlling, the mobile device automatically adjusts institute according to calibration procedure
State the relative position of multi-cam module and light source.
Specifically, as shown in figure 3, the step 3 includes：
Step 3.1：Standard exposure line number is write in each camera；
Step 3.2：Mobile the multi-cam module and/or light source, make one of shooting in the multi-cam module
Head is located under the light source；
Step 3.3：The camera being pointed under the light source is exposed on the basis of standard exposure line number, obtains the camera
Brightness value；
Step 3.4：Repeat step 3.2 and step 3.3, until obtaining the brightness of all cameras in the multi-cam module
Value.
In the present embodiment, the multi-cam module and/or light source are moved first, the light source is located at the first camera
Top, first camera is exposed on the basis of standard exposure line number, obtains the first of first camera
Brightness value G1；Then the light source is made to be located at the top of second camera by the multi-cam module and/or light source again,
The second camera is exposed on the basis of standard exposure line number, obtains the second brightness value of the second camera
G2；Finally again by the movement multi-cam module and/or light source, the light source is set to be located at the top of the 3rd camera, it is right
3rd camera is exposed on the basis of standard exposure line number, obtains the 3rd brightness value G3 of the 3rd camera.
Optimally, in step 3, position of each camera when being exposed both corresponds to the center of the light source.
In step 3, using the brightness value of the central area of the green channel of each camera corresponding to brightness value.
In the present embodiment, taken the photograph using the brightness value of the central area of the green channel of first camera as described first
As the brightness value of head, the second camera is used as using the brightness value of the central area of the green channel of the second camera
Brightness value, the brightness of the 3rd camera is used as using the brightness value of the central area of the green channel of the 3rd camera
Value.
Special instruction, the brightness value of central area refer to the average brightness of all pixels point in central area,
And the brightness value of the central area of green channel, refer to the average brightness of the green glow of all pixels point in central area.Separately
Outside, for blue light and feux rouges, green glow is to the susceptibility highest of brightness, in order that the precision of luminance compensation is higher, this reality
The brightness value in example is applied on the basis of green glow, that is to say, that in the compensation for calibrating errors of reality, brightness value can also be with blue light or red
On the basis of light.The scope of the central area can depending on different demands, can centered on eighth domain or center ten
/ mono- region etc., is not restricted.
Step 4：Using the brightness value of one of camera as normal brightness value, the luminance compensation of other cameras is calculated
Value；
Luminance compensation parameter G-gain-n=G0/Gn of each camera, wherein：G0 is normal brightness value, and Gn is each camera
Brightness value, n is natural number not less than 2.
In the present embodiment, the brightness value G1 of first camera is chosen in step 4 as normal brightness value G0, difference
Calculate the brightness offset value of the second camera and the 3rd camera.
Brightness offset value G-gain-2=G0/G2 of the second camera；
Brightness offset value G-gain-3=G0/G3 of 3rd camera.
Step 5：Brightness offset value is burned onto in corresponding camera.
In the present embodiment, G-gain-2 is burned onto in the second camera, G-gain-3 is burned onto the described 3rd
In camera.
The multi-cam module is in the terminals such as mobile phone in use, back-end processor is by the luminance compensation of each camera
It is worth the brightness for correcting correspondence image, revised brightness value Yn '=Yn*G-gain-n, wherein, Yn ' is that each camera is repaiied
Brightness value after just, Yn are the brightness value before each camera amendment, and n is the natural number not less than 2.
In the present embodiment,
Revised brightness value the Y2 '=Y2*G-gain-2 of second camera,
Revised brightness value the Y3 '=Y3*G-gain-3 of 3rd camera.
The brilliant synchrotron method is in a manner of the movement multi-cam module and/or light source, respectively described more shootings
Each camera of head mould group provides light, carries out compensation for calibrating errors with the brightness to each camera, is clapping each camera
Brightness of image when taking the photograph keeps highly consistent；The size of the light source not camera quantity by the multi-cam module, big
The influence of small and spacing etc., the multi-cam module of various different sizes is common to, therefore, the utilization rate of the light source is high；Institute
Stating the size of light source can be made smaller, reduce production cost, moreover, each camera can be corresponding to the light
Calibrated on the center in source, calibration accuracy is higher, and uniformity is also high；The cost changed after the light source damage is relatively low.
Embodiment described above only expresses embodiments of the present invention, and its description is more specific and detailed, but can not
Therefore the limitation to the scope of the claims of the present invention is interpreted as, as long as the skill obtained using the form of equivalent substitution or equivalent transformation
Art scheme, it all should fall within the scope and spirit of the invention.
Claims (8)
- A kind of 1. brilliant synchrotron method of multi-cam module, it is characterised in that：Comprise the following steps：Step 1：One multi-cam module and a light source are provided, wherein, the multi-cam module and/or light source are removable , the multi-cam module is placed under the light source；Step 2：Obtain standard exposure line number；Step 3：Mobile the multi-cam module and/or light source, distinguish each camera in the multi-cam module Under the light source, it is exposed on the basis of standard exposure line number, obtains the brightness value of each camera；Step 4：Using the brightness value of one of camera as normal brightness value, the brightness offset value of other cameras is calculated；Step 5：Brightness offset value is burned onto in corresponding camera.
- 2. the brilliant synchrotron method of multi-cam module according to claim 1, it is characterised in that：The step 2 includes：Step 2.1：Mobile the multi-cam module and/light source, make one of camera in the multi-cam module Under the light source；Step 2.2：The brightness value of the camera is exposed to particular value；Step 2.3：The exposure line number of the camera is obtained, as standard exposure line number.
- 3. the brilliant synchrotron method of multi-cam module according to claim 2, it is characterised in that：, will in step 2.2 The brightness value of the central area of the green channel of the camera is exposed to particular value.
- 4. the brilliant synchrotron method of the multi-cam module according to Claims 2 or 3, it is characterised in that：The particular value Between 150-210nit scope.
- 5. the brightness distinct methods of multi-cam module according to claim 1, it is characterised in that：The step 3 includes：Step 3.1：Standard exposure line number is write in each camera；Step 3.2：Mobile the multi-cam module and/or light source, make one of shooting in the multi-cam module Head is located under the light source；Step 3.3：The camera being pointed under the light source is exposed on the basis of standard exposure line number, obtains the camera Brightness value；Step 3.4：Repeat step 3.2 and step 3.3, until obtaining the brightness of all cameras in the multi-cam module Value.
- 6. the brilliant synchrotron method of multi-cam module according to claim 1 or 5, it is characterised in that：In step 3, Using the brightness value of the central area of the green channel of each camera corresponding to brightness value.
- 7. the brilliant synchrotron method of multi-cam module according to claim 1 or 5, it is characterised in that：In step 3, Position of each camera when being exposed both corresponds to the center of the light source.
- 8. the brilliant synchrotron method of multi-cam module according to claim 1, it is characterised in that：Each camera it is bright Offset G-gain-n=G0/Gn is spent, wherein：G0 is normal brightness value, and Gn is the brightness value of each camera, and n is not less than 2 Natural number.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711074022.2A CN107734327A (en) | 2017-11-05 | 2017-11-05 | A kind of brilliant synchrotron method of multi-cam module |
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| CN201711074022.2A CN107734327A (en) | 2017-11-05 | 2017-11-05 | A kind of brilliant synchrotron method of multi-cam module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110177269A (en) * | 2019-05-31 | 2019-08-27 | 北京迈格威科技有限公司 | It is double to take the photograph mould group exposure sync bearing calibration and device |
| CN111050158A (en) * | 2019-12-24 | 2020-04-21 | 惠州市德赛西威智能交通技术研究院有限公司 | Camera module correction method and device and storage medium |
| CN111614865A (en) * | 2020-05-13 | 2020-09-01 | 展讯通信（上海）有限公司 | Multi-shooting brightness synchronization method, equipment, device and storage medium |
| CN111629201A (en) * | 2020-04-30 | 2020-09-04 | 昆山丘钛微电子科技有限公司 | Debugging method, device, equipment and medium for camera module |
| CN112437292A (en) * | 2020-11-04 | 2021-03-02 | 昆山丘钛光电科技有限公司 | Method and device for acquiring set value of burning light source of camera module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110177269A (en) * | 2019-05-31 | 2019-08-27 | 北京迈格威科技有限公司 | It is double to take the photograph mould group exposure sync bearing calibration and device |
| CN111050158A (en) * | 2019-12-24 | 2020-04-21 | 惠州市德赛西威智能交通技术研究院有限公司 | Camera module correction method and device and storage medium |
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| CN112437292A (en) * | 2020-11-04 | 2021-03-02 | 昆山丘钛光电科技有限公司 | Method and device for acquiring set value of burning light source of camera module |
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