CN104104946A - Method and electronic equipment for consistence correction of camera - Google Patents
Method and electronic equipment for consistence correction of camera Download PDFInfo
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- CN104104946A CN104104946A CN201410371452.0A CN201410371452A CN104104946A CN 104104946 A CN104104946 A CN 104104946A CN 201410371452 A CN201410371452 A CN 201410371452A CN 104104946 A CN104104946 A CN 104104946A
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Abstract
An embodiment of the invention relates to the technical field of mobile communication, particularly to a method and electronic equipment for consistence correction of a camera. The method includes that the camera, facing a light source, of the electronic equipment shoots an image with brightness value meeting preset conditions; a parser of the electronic equipment parses the image, thereby acquiring and saving a correction parameter of the camera in a memory of the electronic equipment; a correction unit of the electronic equipment acquires the correction parameter from the memory and corrects the image shot by the camera based on the correction parameter. By the use of the method, the consistence of the camera is effectively guaranteed, and production cost of the electronic equipment is lowered.
Description
Technical field
The embodiment of the present invention relates to mobile communication technology field, relates in particular to a kind of method and electronic equipment of camera Concordance.
Background technology
Camera function is the very important function of electronic equipment.How to obtain good photograph effect is the target that electronic equipment research staff pursues always, but in the production process of camera, due to the deviation of sensing chip, camera lens and infrared fileter and the deviation of assembling in producing, make between camera, to occur in distinct electronic apparatuses deviation, and then cause the effect of taking pictures of distinct electronic apparatuses inconsistent.
Main in the production process of camera at present, by certain calibration equipment (for example, computer) each camera is proofreaied and correct, the correction parameter of acquisition is stored in respectively to OTP (the One Time Programmable that the imageing sensor in each camera carries, disposable programmable) in chip, if the capacity of OTP chip not, add EEPROM (Electrically Erasable Programmable Read-Only Memory in camera outside, band EEPROM (Electrically Erasable Programmable Read Only Memo)) chip, and will proofread and correct Parameter storage in eeprom chip.
Because the Concordance of existing camera completes in camera production process, because the production environment of the camera in same electronic equipment project may be inconsistent, there is inconsistent situation in the calibration equipment that is each camera, in addition, in the trimming process of camera, As time goes on, the colour temperature of light source can decay, even if the calibration equipment of same model also can there are differences.Therefore, the method for existing camera Concordance cannot be guaranteed the consistency of camera imaging effect, and adopts EEPROM storage correction parameter to increase the production cost of electronic equipment.
Summary of the invention
The object of the invention is to propose a kind of method and electronic equipment of camera Concordance, to guarantee the consistency of camera imaging effect, and reduce the production cost with the electronic equipment of camera.
On the one hand, the invention provides a kind of method of camera Concordance, comprising:
Camera in electronic equipment is towards light source pictures taken, and wherein, the brightness value of described picture meets pre-conditioned;
Picture described in resolver resolves in described electronic equipment, obtains the correction parameter of described camera according to analysis result, and described correction parameter is stored in the internal memory of described electronic equipment;
Correcting unit in described electronic equipment obtains described correction parameter from described internal memory, and proofreaies and correct according to described correction parameter the picture that described camera is taken.
On the other hand, the invention provides a kind of electronic equipment, comprise camera, resolver and correcting unit, wherein,
Described camera, for towards light source pictures taken, wherein, the brightness value of described picture meets pre-conditioned;
Described resolver, for resolving described picture, obtains the correction parameter of described camera, and described correction parameter is stored in the internal memory of described electronic equipment according to analysis result;
Described correcting unit, for obtaining described correction parameter from described internal memory, and proofreaies and correct according to described correction parameter the picture that described camera is taken.
Method and the electronic equipment of the camera Concordance providing in the embodiment of the present invention, can guarantee the consistency of camera, and reduce the production cost of electronic equipment.In the embodiment of the present invention, proofread and correct the consistency of camera at electronic equipment end, and described correction parameter is stored in the internal memory of electronic equipment.At electronic equipment end, camera is carried out to Concordance due to what unify in the embodiment of the present invention, and existing bearing calibration is, in the production process of camera, camera is carried out to Concordance, therefore the embodiment of the present invention has been guaranteed the consistency of camera than prior art; In addition, the embodiment of the present invention will be proofreaied and correct Parameter storage in the internal memory of electronic equipment, and in existing bearing calibration, to proofread and correct Parameter storage in the OTP of camera chip and eeprom chip, that is, the embodiment of the present invention has been simplified the structure of camera, has reduced the production cost of electronic equipment.
Brief description of the drawings
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a part for the embodiment of the present invention, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the realization flow figure of the method for the camera Concordance that provides in first embodiment of the invention;
Fig. 2 is the schematic diagram of white balance processing region in first embodiment of the invention;
Fig. 3 is the schematic diagram of the statistical regions that provides in first embodiment of the invention;
Fig. 4 is the realization flow figure of the method for the camera Concordance that provides in second embodiment of the invention;
Fig. 5 is the structural representation of the electronic equipment that provides in fourth embodiment of the invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the embodiment of the present invention is carried out more in detail and complete explanation.Be understandable that, specific embodiment described herein is only for explaining the embodiment of the present invention, but not restriction to the embodiment of the present invention.It also should be noted that, for convenience of description, in accompanying drawing, only show the part relevant to the embodiment of the present invention but not full content.
The first embodiment:
Fig. 1 is the realization flow figure of the method for the camera Concordance that provides in first embodiment of the invention, the method can be carried out by the device of camera Concordance, described device can be realized by software and/or hardware, and a part that can be used as electronic equipment is built in electronic equipment internal.As shown in Figure 1, this realization flow comprises:
Camera in step 11, electronic equipment is towards light source pictures taken, and wherein, the brightness value of described picture meets pre-conditioned.
The method of the camera Concordance providing in first embodiment of the invention is carried out camera Concordance at electronic equipment end, and, before each camera is carried out to Concordance, each camera has been installed on respectively in different electronic equipments.Wherein, described electronic equipment can comprise for smart mobile phone and panel computer etc. the mobile device of camera.
Camera in each electronic equipment is towards unified light source pictures taken.The consistency of light source has very directly impact to proofreading and correct result, can guarantee the consistency of light source in the embodiment of the present invention.
Wherein, the described pre-conditioned range of luminance values that can comprise described picture is 120～150.
Described picture is Raw (undressed) picture, each electronic equipment is taken the parameter of described picture according to environmental unit, the range of luminance values that makes the picture of described picture is between 120～150, can effectively ensure the correction result to camera according to this picture, be convenient to, according to described picture, camera is carried out to Concordance.
Picture described in resolver resolves in step 12, described electronic equipment, obtains the correction parameter of described camera, and described correction parameter is stored in the internal memory of described electronic equipment according to analysis result.
In the camera Concordance method providing in first embodiment of the invention, picture described in resolver resolves in electronic equipment, obtain the correction parameter of described camera according to analysis result, and without resolve described picture by the computer end being connected with camera,, the embodiment of the present invention has been guaranteed the consistency of camera.In addition, in the embodiment of the present invention, proofread and correct Parameter storage in the internal memory (rom chip) of electronic equipment, instead of be stored in camera in OTP chip or eeprom chip, that is, in the embodiment of the present invention, reduced the cost of electronic equipment.
Wherein, picture described in the resolver resolves in described electronic equipment, obtains the correction parameter of described camera according to analysis result, can comprise:
A, described resolver obtain the first gauge point position and the second gauge point position that user arranges in described picture, and according to the correction parameter of white balance of camera described in described the first gauge point position and the second gauge point position calculation.
Fig. 2 is the schematic diagram of white balance processing region in first embodiment of the invention, as shown in Figure 2, the region that user needs according to rear end platform processes, can on described picture, set the first gauge point position (A point coordinates) and the second gauge point position (C point coordinates), resolver obtains A point coordinates and the C point coordinates that user arranges, and calculating the correction parameter of white balance of described camera according to A point coordinates and C point coordinates, the picture that camera is taken meets white balance demand.
Wherein, according to the correction parameter of white balance of camera described in described the first gauge point position and the second gauge point position calculation, can comprise: the definite rectangle (rectangle ABCD) in described the first gauge point position (A point coordinates) and described the second gauge point position (C point coordinates) is defined as described white balance processing region by described resolver; Described resolver is added up the component value of the each passage in described white balance processing region, as the correction parameter of white balance of described camera.
Wherein, described white balance processing region can be positioned at the center of described picture.The essence that the picture of camera being taken by correction parameter of white balance does white balance processing is to make region display white the brightest in camera pictures taken.Due to the brightness maximum of the central area of described picture, therefore, using the central area of described picture as white balance region, can guarantee the reasonability of correction parameter of white balance, thereby improve the accuracy of described correction parameter of white balance.
Wherein, the size in white balance region need to ensure that, in certain scope, the size in white balance region can not be excessive, can not be too small.The size in white balance region is needed to determine by rear end platform processes.
It should be noted that, resolver also can directly be determined white balance processing region, and manually determines described the first gauge point position and the second gauge point position without user.For example, the region that resolver is got certain size in the center of described picture is as white balance processing region.
B, described resolver are divided into multiple statistical regions according to user's operation by described picture, and calculate the shadow correction parameter of described camera according to described multiple statistical regions.
Wherein, calculate the shadow correction parameter of described camera according to described multiple statistical regions, can comprise: described resolver is added up the component value of the each passage in each statistical regions, as the shadow correction parameter of described camera.
It should be noted that, for each statistical regions, resolver can be added up the component value of each passage that all sub-pixels of this statistical regions inside are corresponding, also can add up the component value of each passage that wherein a part of sub-pixel is corresponding of this statistical regions inside, as the shadow correction parameter of this statistical regions.
Fig. 3 is the schematic diagram of the statistical regions that provides in first embodiment of the invention, as shown in Figure 3, the needs that resolver is proofreaied and correct according to rear end platform, described picture is divided into multiple statistical regions, and add up respectively the component value of the each passage in each statistical regions, as the shadow correction parameter of described camera.
Wherein, the component value of described each passage can comprise component value and the blue component value of red component value, yellow.
It should be noted that, in the embodiment of the present invention, each passage is not construed as limiting.For example, in the display floater of rgb color pattern, each passage just refers to red channel, green channel and blue channel, and in the display floater of RGBW color mode, what each passage referred to is exactly red channel, green channel, blue channel and white channel.
Resolver by the shadow correction Parameter storage of the camera obtaining in the correction parameter of white balance of the camera obtaining in steps A and step B in the internal memory of electronic equipment.
Correcting unit in step 13, described electronic equipment obtains described correction parameter from described internal memory, and proofreaies and correct according to described correction parameter the picture that described camera is taken.
In electronic equipment, when camera pictures taken, under this camera of correcting unit, in the internal memory of electronic equipment, obtain the correction parameter of this camera, and proofread and correct according to described correction parameter the picture that this camera is taken.
To sum up, the method for the camera Concordance providing in first embodiment of the invention can be guaranteed the consistency of camera, and can reduce the production cost of electronic equipment.At electronic equipment end, camera is proofreaied and correct, the picture that resolver resolves camera in electronic equipment is taken, obtains the correction parameter of described camera according to analysis result, guaranteed the consistency of camera.In addition, in the embodiment of the present invention, proofread and correct Parameter storage in the internal memory of electronic equipment, reduced the cost of electronic equipment.
The second embodiment:
Fig. 4 is the realization flow figure of the method for the camera Concordance that provides in first embodiment of the invention, the method can be carried out by the device of camera Concordance, described device can be realized by software and/or hardware, and a part that can be used as electronic equipment is built in electronic equipment internal.As shown in Figure 4, this realization flow comprises:
Step 21, camera is installed on respectively in electronic equipment.
Before carrying out Concordance for camera, camera is installed in electronic equipment.
Camera in step 22, each electronic equipment faces toward light source pictures taken towards light source pictures taken.
Wherein, described picture is Raw (undressed) picture.When pictures taken, according to the residing Environmental adjustments parameter of electronic equipment, make the brightness of described picture in an applicable position, the range of luminance values of this picture is: 120～150.
Picture described in resolver resolves in step 23, electronic equipment, obtains correction parameter according to analysis result, and will proofread and correct Parameter storage in the internal memory of electronic equipment.
Wherein, the correction parameter of camera can comprise the relevant information of camera, such as producer's information and date of manufacture etc., focus information, correction parameter of white balance and shadow correction parameter automatically.Wherein, the effect of correction parameter of white balance and shadow correction parameter is the color of calibration camera.The process of obtaining correction parameter can simply be described as: use unified light source, make camera face toward unified light source, make the imaging results of each camera consistent, obtain the correction parameter of camera in this process.As can be seen here, the consistency of light source has very directly impact to the result of proofreading and correct.
Existing camera Concordance method is carried out in the production process of camera, but in the same project of same electronic equipment manufacturer, may adopt two or more camera vendor,, the production process difference of the camera using in the electronic equipment under same project, there is inconsistent situation in the calibration equipment that they use.In addition, in use, As time goes on, colour temperature can decay light source, even if the correction device result of same model also can there are differences.And shadow correction parameter is conventionally more, if the OTP chip of transducer does not have enough space storage shadow correction parameters, need to increase eeprom chip, to store correction parameter, thereby cause the production cost of camera to increase.
In the embodiment of the present invention, the work of the Concordance of camera is transferred to electronic equipment from camera module factory and bring in execution, and by the storage medium of correction parameter by OTP chip or eeprom chip, change the rom chip of electronic equipment internal into, the consistency of camera not only can be guaranteed, the production cost of electronic equipment can also be reduced.
Wherein, picture described in resolver resolves in electronic equipment, obtaining correction parameter according to analysis result can comprise: according to the region of rear end platform needs, set the coordinate of the first gauge point and the second gauge point, then add up component value, the component value of yellow channels and the component value of blue channel of the red channel in and the corresponding rectangular area of second point at first, as white balance parameter; The needs of proofreading and correct according to rear end platform, are divided into multiple statistical regions by picture, add up component value, the component value of yellow channels and the component value of blue channel of the red channel in each statistical regions, as shadow correction parameter.
Correcting unit in step 24, described electronic equipment obtains described correction parameter from described internal memory, and proofreaies and correct according to described correction parameter the picture that described camera is taken.
Second embodiment of the invention is transferred to the correction work of camera module on electronic equipment platform and is completed, and can guarantee the consistency of each camera, and reduces the production cost of electronic equipment.
The 3rd embodiment:
Fig. 5 is the structural representation of the electronic equipment that provides in third embodiment of the invention, and as shown in Figure 5, the electronic equipment described in the present embodiment comprises camera 31, resolver 32 and correcting unit 33, wherein,
Described camera 31, for towards light source pictures taken, wherein, the brightness value of described picture meets pre-conditioned; Described resolver 32, for resolving described picture, obtains the correction parameter of described camera, and described correction parameter is stored in the internal memory of described electronic equipment according to analysis result; Described correcting unit 33, for obtaining described correction parameter from described internal memory, and proofreaies and correct according to described correction parameter the picture that described camera is taken.
Wherein, described resolver 32 specifically can comprise: mark position acquiring unit, the first gauge point position and the second gauge point position that arrange at described picture for obtaining user; White balance parameter acquiring unit, for according to the correction parameter of white balance of camera described in described the first gauge point position and the second gauge point position calculation; Statistical regions determining unit, for being divided into multiple statistical regions according to user's operation by described picture; Shadow parameter acquiring unit, for calculating the shadow correction parameter of described camera according to described multiple statistical regions; Memory cell, for by described correction parameter of white balance and described shadow correction Parameter storage in the internal memory of described electronic equipment.
Wherein, white balance parameter acquiring unit specifically can comprise: subelement is determined in first area, for the rectangle of described the first gauge point position and described the second gauge point location positioning is defined as to described white balance processing region; The first parameter acquiring subelement, for adding up the value of each channel components of described white balance processing region, as the correction parameter of white balance of described camera.
Wherein, Shadow Parameters acquiring unit specifically can be for: add up the component value of the each passage in each statistical regions, as the shadow correction parameter of described camera.
Wherein, the described pre-conditioned range of luminance values that can comprise described picture is 120～150.
Wherein, the component value of described each passage can comprise component value and the blue component value of red component value, yellow.
The electronic equipment providing in third embodiment of the invention, the correction work of camera module is transferred on electronic equipment platform and completed, the consistency of each camera can be guaranteed, by proofreading and correct Parameter storage in the internal memory of electronic equipment, the production cost of electronic equipment can be reduced.
The above is only the preferred embodiment of the embodiment of the present invention, is not limited to the embodiment of the present invention, and to those skilled in the art, the embodiment of the present invention can have various changes and variation.Any amendment of doing within all spirit in the embodiment of the present invention and principle, be equal to replacement, improvement etc., within all should being included in the protection range of the embodiment of the present invention.
Claims (10)
1. a method for camera Concordance, is characterized in that, comprising:
Camera in electronic equipment is towards light source pictures taken, and wherein, the brightness value of described picture meets pre-conditioned;
Picture described in resolver resolves in described electronic equipment, obtains the correction parameter of described camera according to analysis result, and described correction parameter is stored in the internal memory of described electronic equipment;
Correcting unit in described electronic equipment obtains described correction parameter from described internal memory, and proofreaies and correct according to described correction parameter the picture that described camera is taken.
2. method according to claim 1, is characterized in that, picture described in the resolver resolves in described electronic equipment obtains the correction parameter of described camera according to analysis result, comprising:
Described resolver obtains the first gauge point position and the second gauge point position that user arranges in described picture, and according to the correction parameter of white balance of camera described in described the first gauge point position and the second gauge point position calculation;
Described resolver is divided into multiple statistical regions according to user's operation by described picture, and calculates the shadow correction parameter of described camera according to described multiple statistical regions.
3. method according to claim 2, is characterized in that, according to the correction parameter of white balance of camera described in described the first gauge point position and the second gauge point position calculation, comprising:
The rectangle of described the first gauge point position and described the second gauge point location positioning is defined as described white balance processing region by described resolver;
Described resolver is added up the component value of the each passage in described white balance processing region, as the correction parameter of white balance of described camera.
4. method according to claim 2, is characterized in that, calculates the shadow correction parameter of described camera according to described multiple statistical regions, comprising:
Described resolver is added up the component value of the each passage in each statistical regions, as the shadow correction parameter of described camera.
5. according to the method described in claim 1-4 any one, it is characterized in that, the described pre-conditioned range of luminance values that comprises described picture is 120～150.
6. according to the method described in claim 3 or 4, it is characterized in that, the component value of described each passage comprises component value and the blue component value of red component value, yellow.
7. an electronic equipment, is characterized in that, comprises camera, resolver and correcting unit, wherein,
Described camera, for towards light source pictures taken, wherein, the brightness value of described picture meets pre-conditioned;
Described resolver, for resolving described picture, obtains the correction parameter of described camera, and described correction parameter is stored in the internal memory of described electronic equipment according to analysis result;
Described correcting unit, for obtaining described correction parameter from described internal memory, and proofreaies and correct according to described correction parameter the picture that described camera is taken.
8. electronic equipment according to claim 7, is characterized in that, described resolver specifically comprises:
Mark position acquiring unit, the first gauge point position and the second gauge point position that arrange at described picture for obtaining user;
White balance parameter acquiring unit, for according to the correction parameter of white balance of camera described in described the first gauge point position and the second gauge point position calculation;
Statistical regions determining unit, for being divided into multiple statistical regions according to user's operation by described picture;
Shadow Parameters acquiring unit, for calculating the shadow correction parameter of described camera according to described multiple statistical regions;
Memory cell, for by described correction parameter of white balance and described shadow correction Parameter storage in the internal memory of described electronic equipment.
9. electronic equipment according to claim 8, is characterized in that, white balance parameter acquiring unit specifically comprises:
Subelement is determined in first area, for the rectangle of described the first gauge point position and described the second gauge point location positioning is defined as to described white balance processing region;
The first parameter acquiring subelement, for adding up the value of each channel components of described white balance processing region, as the correction parameter of white balance of described camera.
10. electronic equipment according to claim 8, is characterized in that, Shadow Parameters acquiring unit specifically for:
Add up the component value of the each passage in each statistical regions, as the shadow correction parameter of described camera.
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| CN107728421A (en) * | 2017-11-05 | 2018-02-23 | 信利光电股份有限公司 | A kind of calibration method and calibration system of multispectral multi-cam module |
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| CN105049681B (en) * | 2015-07-07 | 2018-01-23 | 广东欧珀移动通信有限公司 | A kind of camera lens shade calibration method and user terminal |
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| 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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Application publication date: 20141015 |