CN104079928A - Consistency calibration method and device of camera and mobile device - Google Patents
Consistency calibration method and device of camera and mobile device Download PDFInfo
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Abstract
The embodiment of the invention relates to the technical field of mobile communication, in particular to a consistency calibration method and device of a camera and a mobile device. The method comprises the steps of obtaining a gain modification value, set by a user, of a first color and a gain modification value, set by the user, of a second color; according to the gain modification value of the first color, the gain modification value of the second color, a gain value, currently set in an image processor, of the first color, a gain value, currently set in the image processor, of the second color and a gain value, currently set in the image processor, of a third color, calculating a new gain value of the first color of the camera, a new gain value of the second color of the camera and a new gain value of the third color of the camera, and outputting the new gain value of the first color of the camera, the new gain value of the second color of the camera of the camera and the new gain value of the third value of the camera to the image processor so as to enable the image processor to adopt the gain value of the first new color, the gain value of the second new color and the gain value of the third new color to process images shot by the camera. According to the method, the consistency calibration of the camera is improved and achieved.
Description
Technical field
The embodiment of the present invention relates to mobile communication technology field, relates in particular to consistency calibration steps, device and the mobile device of camera.
Background technology
For example, along with the fast development of the various electronic equipments such as intelligent mobile terminal (, smart mobile phone), electronic equipment has been widely used in the every field of live and work, and camera function has also become the common function of electronic equipment.
In the production process of the camera of intelligent mobile terminal, between each camera of generation, there is certain otherness.When engineer debugs camera effect, can only choose a golden module (standard module) debugs a plurality of cameras with a collection of generation, if but while there is relatively large deviation in the deviation of standard module display screen excessive or intelligent mobile terminal, the consistency of camera cannot be guaranteed, the picture effect that each camera is taken can not be guaranteed.
At present, high pixel module mainly adopts OTP (One Time Programmable, one-off programming) microprocessor is calibrated camera, this calibration steps can increase production process, and very high to the coherence request of light, thereby can increase the difficulty of producing camera, and then increase the production cost of camera, reduce production efficiency.In addition, even if guaranteed the consistency of camera by this calibration steps, if but the consistency of display screen existing problems also can cause picture to have colour cast phenomenon when display screen shows.To sum up, the consistency calibration steps of existing camera, cannot effectively guarantee the consistency of camera, and the calibration efficiency of camera is lower, causes the production efficiency of camera low.
Summary of the invention
The object of the invention is to propose a kind of consistency calibration steps, device and mobile device of camera, to improve the calibration efficiency of camera, thus the production efficiency of raising camera.
On the one hand, the invention provides a kind of consistency calibration steps of camera, comprising:
Obtain the gain correction value of the first color and the gain correction value of the second color that user arranges;
Yield value, the yield value of the second color and the yield value of the 3rd color of the first color in image processor according to the gain correction value of the gain correction value of the first color of obtaining, the second color and Set For Current, calculate the yield value of the first new color of described camera, the yield value of the yield value of new the second color and new the 3rd color;
The yield value of the yield value of the yield value of the first new color of described camera, new the second color and new the 3rd color is exported to image processor, and the image that the yield value of the yield value of new the second color and new the 3rd color photographs camera so that image processor adopts the yield value of the first new color is processed.
Again on the one hand, the invention provides a kind of consistency calibrating installation of camera, comprising:
Correction value acquiring unit, the gain correction value of the first color and the gain correction value of the second color that for obtaining user, arrange;
Yield value pre-sets unit, for obtaining in advance the yield value of the yield value of the first color of described camera, the yield value of the second color and the 3rd color, and the yield value of the yield value of the yield value of described the first color, described the second color and described the 3rd color is exported to image processor;
New value computing unit, for according to the gain correction value of the first color obtained, the gain correction value of the second color and Set For Current at the yield value of the yield value of the first color of image processor, the yield value of the second color and the 3rd color, calculate the yield value of the first new color of described camera the yield value of the yield value of new the second color and new the 3rd color;
Graphics processing unit, for the yield value of the yield value of the yield value of the first new color of described camera, new the second color and new the 3rd color is exported to image processor, the image that the yield value of the yield value of new the second color and new the 3rd color photographs camera so that image processor adopts the yield value of the first new color is processed.
On the other hand, the invention provides a kind of mobile device, the consistency calibrating installation of the picture head providing in any embodiment of the present invention is provided.
Consistency calibration steps, device and the mobile device of the camera providing in the embodiment of the present invention, can improve the calibration efficiency of camera, and then improve the production efficiency of camera.In the embodiment of the present invention, obtain the gain correction value of the first color and the gain correction value of the second color, and according to the gain correction value of the gain correction value of the first color, the second color and versicolor yield value, calculate the new versicolor yield value of described camera, and new versicolor yield value is exported to image processor, so that the image that image processor adopts new yield value to photograph camera is processed.Therefore, in the embodiment of the present invention, the colour gain values that the gain correction value that image processor can arrange according to demand in conjunction with user and camera arrange in image processor when Automatic white balance pattern arranges image processor again, image processor can be needed picture processing color for user.That is, the embodiment of the present invention can realize the consistency calibration of camera efficiently, thereby improves the calibration efficiency of camera, and then improves the production efficiency of camera and improve the image quality of camera.
Accompanying drawing explanation
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 consistency calibration steps of the camera that provides in first embodiment of the invention;
Fig. 2 is the realization flow figure of the consistency calibration steps of the camera that provides in third embodiment of the invention;
Fig. 3 is the structural representation of the consistency calibrating installation of the camera that provides in fourth embodiment of the invention;
Fig. 4 is the structural representation of the mobile device that provides in fifth 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 consistency calibration steps of the camera that provides in first embodiment of the invention, the method can be carried out by the consistency calibrating installation of camera, described device can be realized by software and/or hardware, and a part that can be used as mobile device is built in mobile device inside.This realization flow comprises:
Step 11, obtain the gain correction value of the first color and the gain correction value of the second color that user arranges.
After camera starts, when user calibrates camera, for example, camera, when white balance calibration pattern, obtains the gain correction value of the first color and the gain correction value of the second color that user arranges.
Wherein, obtain the gain correction value of the first color and the gain correction value of the second color that user arranges, can comprise: obtain the gain correction value of the first color of correction progress bar setting and the gain correction value of the second color of the correction progress bar setting that user passes through the second color that user passes through the first color.
User is the needs to image picture quality according to self, and the gain correction value of the first color is set by the correction progress bar of the first color, and the gain correction value of the second color is set by the correction progress bar of the second color.For example, in the picture of the current demonstration of camera, if user need to strengthen the brightness of the first color, user can increase by the correction progress bar of the first color the gain correction value of the first color; If user need to weaken the brightness of the first color, user can reduce by the correction progress bar of the first color the gain correction value of the first color; If user thinks that picture the 3rd color of camera shooting is excessively strong, can increase respectively the gain correction value of the first color and the gain correction value of the second color.
It should be noted that, the concrete form that in the embodiment of the present invention, user is arranged to the gain correction value of the first color and the gain correction value of the second color is not construed as limiting.Except the above-mentioned user who mentions arranges the gain correction value of the first color and the gain correction value of the second color by the form of progress bar, also can the gain correction value of the first color and the gain correction value of the second color be set by other forms such as manual input numerical value.
Step 12, according to the gain correction value of the first color obtained, the gain correction value of the second color and Set For Current at image processor (Image Signal Processor, the yield value of the yield value of the first color ISP), the yield value of the second color and the 3rd color, calculates the yield value of the first new color of described camera, the yield value of the yield value of new the second color and new the 3rd color.
Wherein, described the first color can be redness, and described the second color can be blueness, and described the 3rd color can be green; Or described the first color is red, described the second color be green, and described the 3rd color is blueness; Or described the first color is green, described the second color be blue, and described the 3rd color is redness.
It should be noted that, the embodiment of the present invention for be the three-channel camera of RGB, if this three-channel camera is other three kinds of colors, corresponding, the first color, the second color and the 3rd color can be respectively three kinds of passages of camera.For example, camera is the blue triple channel of reddish yellow, and the first color, the second color and the 3rd color can be respectively red, yellow and blue.
Wherein, when described the first color is red, described the second color is blue, when described the 3rd color is green, the acquisition methods of the yield value of first color of Set For Current in image processor, the yield value of the second color and the yield value of the 3rd color, can comprise:
When camera obtains the picture of scene, described picture is divided into the region that a plurality of sizes are identical, and calculates respectively the average brightness in region described in each, the region of getting average brightness maximum is white portion;
Calculate red value mean value r, green value mean value g and the blue valve mean value b of described white portion, and calculate the red yield value of described camera under Automatic white balance pattern and be:
green yield value is: G
0=1 and blue yield value be
Wherein, when described the first color is red, described the second color is green, when described the 3rd color is blue, the acquisition methods of the yield value of first color of Set For Current in image processor, the yield value of the second color and the yield value of the 3rd color, can comprise: when camera obtains the picture of scene, described picture is divided into the region that a plurality of sizes are identical, and calculate respectively the average brightness in region described in each, the region of getting average brightness maximum is white portion;
Calculate red value mean value r, green value mean value g and the blue valve mean value b of described white portion, and calculate the red yield value of described camera under Automatic white balance pattern and be:
green yield value is:
with blue yield value be B
0=1.
Wherein, when described the first color is green, described the second color is blue, when described the 3rd color is red, the acquisition methods of the yield value of first color of Set For Current in image processor, the yield value of the second color and the yield value of the 3rd color, can comprise: when camera obtains the picture of scene, described picture is divided into the region that a plurality of sizes are identical, and calculate respectively the average brightness in region described in each, the region of getting average brightness maximum is white portion;
Calculate red value mean value r, green value mean value g and the blue valve mean value b of described white portion, and calculate the red yield value of described camera under Automatic white balance pattern and be: R
0=1, green yield value is:
with blue yield value be
Step 13, the yield value of the yield value of the yield value of the first new color of described camera, new the second color and new the 3rd color is exported to image processor, the image that the yield value of the yield value of new the second color and new the 3rd color photographs camera so that image processor adopts the yield value of the first new color is processed.
Because the yield value of the yield value of the yield value of the first new color, new the second color and new the 3rd color is to combine the image that yield value, the yield value of the second color and the yield value of the 3rd color of user's first color in Automatic white balance pattern image processor of lower time according to the gain correction value of the gain correction value of the first color of self-demand setting and the second color and video camera photograph camera to process,, the method, on the basis of Automatic white balance, is fully processed image in conjunction with user's demand.
In addition, user arranges the gain correction value of the first color and the gain correction value of the second color according to the shown image of the display screen of mobile device and user's self demand, that is the picture quality that, the embodiment of the present invention can effectively avoid the offset issue due to display screen to cause is poor.And user can calibrate camera according to the hobby of self, user can arrange according to the hobby of self effect of camera.
It should be noted that, passage number to camera in first embodiment of the invention is not construed as limiting, except the above-mentioned triple channel camera of mentioning, the present invention is also applicable to the camera that passage number is other numerical value, for example, if camera is four-way camera, only need in step 11, obtain the gain correction value of the first color of user's setting, the gain correction value of the gain correction value of the second color and the 3rd color; In step 12, according to the gain correction value of obtain 3 colors and and the yield value of four colors of Set For Current in image processor, calculate the yield value of four kinds of new colors of described camera, and in step 13, the yield value of four kinds of new colors of described camera is exported to image processor, so that the image that image processor adopts the yield value of four kinds of new colors to photograph camera is processed the consistency calibration that can realize four-way camera.
The conforming calibration steps of the camera providing in first embodiment of the invention, concrete following advantages: the image quality that can effectively avoid the bad camera causing of color consistency of camera to take is poor; The picture effect that the pickup camera that can avoid display screen colour cast and cause is taken is bad; User can arrange according to the hobby of self effect of pickup camera.
The second embodiment:
The second embodiment is the concrete optimization to step 12 in first embodiment of the invention, and as shown in Figure 2, the method comprises:
When described the first color is red, described the second color be blue, and when described the 3rd color be green, foundation is formula as follows, calculates the yield value R of the first new color of described camera, the yield value B of the yield value G of new the second color and new the 3rd color:
R:G:B＝R
0r:G
0:B
0b，
Wherein, R
0for the red yield value of Set For Current in image processor, G
0for the green yield value of Set For Current in image processor, B
0for the blue yield value of Set For Current in image processor, r is that the red gain correction value and the b that in step 11, obtain are the blue gain correction value of obtaining in step 11.
Wherein, when described the first color is red, described the second color is green, when described the 3rd color is blue, according to following formula, calculate the yield value R of the first new color of described camera, the yield value G of the yield value B of new the second color and new the 3rd color:
R:G:B＝R
0r:G
0g:B
0，
Wherein, R
0for the red yield value of Set For Current in image processor, G
0for the green yield value of Set For Current in image processor, B
0for the blue yield value of Set For Current in image processor, r is that the red gain correction value and the g that obtain are the green gain correction value of obtaining.
Wherein, when described the first color is green, described the second color is blue, when described the 3rd color is red, according to following formula, calculate the yield value G of the first new color of described camera, the yield value R of the yield value B of new the second color and new the 3rd color:
R:G:B＝R
0:G
0g:B
0b，
Wherein, R
0for the red yield value of Set For Current in image processor, G
0for the green yield value of Set For Current in image processor, B
0for the blue yield value of Set For Current in image processor, g is the green gain correction value of obtaining, and b is the blue gain correction value of obtaining.
During the present invention second implements, the yield value of three kinds of colors in image processor according to the gain correction value of obtain two kinds of colors and Set For Current, calculates the yield value of three kinds of new colors of described camera.
The 3rd embodiment:
Fig. 2 is the realization flow figure of the consistency calibration steps of the camera that provides in third embodiment of the invention, the method can be carried out by the consistency calibrating installation of camera, described device can be realized by software and/or hardware, and a part that can be used as mobile device is built in mobile device inside.This realization flow comprises:
Step 31, when user starts camera and camera in white balance calibration pattern, show red correction progress bar and blue correction progress bar.
Step 32, prompting user, according to the colour cast situation of camera current shooting picture, arrange red gain correction value by red correction progress bar, by blue correction progress bar, blue gain correction value are set.
Step 33, the red gain correction value of obtaining user's setting and blue gain correction value.
Step 34, according to the red gain correction value obtained, blue gain correction value and the red yield value of Set For Current in image processor, blue yield value and the green yield value of the second color, calculate the new red yield value of described camera, new blue yield value and new green yield value.
Camera, on the basis of Automatic white balance, is multiplied by this two ratio values, obtains new red yield value, new blue yield value and new green yield value.
Step 35, the new red yield value of described camera, new blue yield value and new green yield value are exported to image processor, so that the image that image processor adopts new red yield value, new blue yield value and new green yield value to photograph camera is processed.
A kind of consistency calibration program based on user is provided in third embodiment of the invention.In camera the inside, add a white balance calibration pattern, when entering this pattern, there will be two progress bars, the corresponding red gain correction value r of difference and blue gain correction value b, allow user according to the white balance colour cast situation of current picture, drag this two progress bars, after point is confirmed, phase chance is got off these two value records, superior these two the gain correction values in basis of the red yield value then calculating in camera Automatic white balance and blue yield value, thereby solve the effect problem of the camera colour cast that the colour cast by camera difference or display screen causes.
Be below device embodiment and the system embodiment of the embodiment of the present invention, the inventive method embodiment, device embodiment and system embodiment belong to same design, the detail content of detailed description not in device embodiment and system embodiment, can be with reference to said method embodiment.
The 4th embodiment:
Fig. 3 is the structural representation of the consistency calibrating installation of the camera that provides in fourth embodiment of the invention, and as shown in Figure 3, the device described in the present embodiment comprises:
Correction value acquiring unit 41, the gain correction value of the first color and the gain correction value of the second color that for obtaining user, arrange; Yield value pre-sets unit 42, for obtaining in advance the yield value of the yield value of the first color of described camera, the yield value of the second color and the 3rd color, and the yield value of the yield value of the yield value of described the first color, described the second color and described the 3rd color is exported to image processor; New value computing unit 43, for according to the gain correction value of the first color obtained, the gain correction value of the second color and Set For Current at the yield value of the yield value of the first color of image processor, the yield value of the second color and the 3rd color, calculate the yield value of the first new color of described camera the yield value of the yield value of new the second color and new the 3rd color; Graphics processing unit 44, for the yield value of the yield value of the yield value of the first new color of described camera, new the second color and new the 3rd color is exported to image processor, the image that the yield value of the yield value of new the second color and new the 3rd color photographs camera so that image processor adopts the yield value of the first new color is processed.
Wherein, described the first color can be redness, and described the second color can be blueness, and described the 3rd color can be green; Or described the first color can be redness, described the second color can be green, and described the 3rd color can be blueness; Or described the first color can be green, described the second color can be blueness, and described the 3rd color can be redness.
Wherein, described new value computing unit 43 specifically can be for: when described the first color is red, described the second color is blue, when described the 3rd color is green, according to following formula, calculate the yield value R of the first new color of described camera, the yield value B of the yield value G of new the second color and new the 3rd color:
R:G:B=R
0r:G
0: B
0b, wherein, R
0for the yield value of described redness, G
0for the yield value of described green, B
0for the yield value of described blueness, r is that red gain correction value and b is blue gain correction value.
Wherein, yield value pre-sets unit 42 and specifically can comprise: region obtains subelement, for when camera obtains the picture of scene, described picture is divided into the region that a plurality of sizes are identical, and calculate respectively the average brightness in region described in each, the region of getting average brightness maximum is white portion; Yield value computation subunit, for working as described the first color, be red, described the second color is blue, when described the 3rd color is green, calculate red value mean value r, green value mean value g and the blue valve mean value b of described white portion, and calculate the red yield value of described camera under Automatic white balance pattern and be:
green yield value is: G
0=1 and blue yield value be
Wherein, described correction value acquiring unit 41 specifically can be for: the gain correction value of obtaining the second color that the gain correction value of the first color that the correction progress bar of user by the first color arrange and the user correction progress bar by the second color arranges.
The conforming calibrating installation of the camera providing in fourth embodiment of the invention, can effectively avoid the bad camera image quality causing of color consistency of camera poor; The pickup camera effect that can avoid display screen colour cast and cause is bad; And user can arrange according to the hobby of self effect of pickup camera.
The 5th embodiment:
Fig. 4 is the structural representation of the mobile device that provides in fifth embodiment of the invention, and the conforming calibrating installation of the camera providing in any embodiment of the present invention is provided this mobile device.
For example, this mobile device comprises that correction value acquiring unit, yield value pre-set unit, are newly worth computing unit and graphics processing unit, and wherein, yield value pre-sets unit and specifically can comprise: region obtains subelement and yield value computation subunit.
The mobile device providing in fifth embodiment of the invention can be realized the color consistency calibration of camera, thereby avoids the image quality of camera poor.
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 modification 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 consistency calibration steps for camera, is characterized in that, comprising:
Obtain the gain correction value of the first color and the gain correction value of the second color that user arranges;
Yield value, the yield value of the second color and the yield value of the 3rd color of the first color in image processor according to the gain correction value of the gain correction value of the first color of obtaining, the second color and Set For Current, calculate the yield value of the first new color of described camera, the yield value of the yield value of new the second color and new the 3rd color;
The yield value of the yield value of the yield value of the first new color of described camera, new the second color and new the 3rd color is exported to image processor, and the image that the yield value of the yield value of new the second color and new the 3rd color photographs camera so that image processor adopts the yield value of the first new color is processed.
2. method according to claim 1, is characterized in that,
Described the first color is red, and described the second color is blue, and described the 3rd color is green; Or
Described the first color is red, and described the second color is green, and described the 3rd color is blue; Or
Described the first color is green, and described the second color is blue, and described the 3rd color is red.
3. method according to claim 2, is characterized in that, when described the first color is red, described the second color is blue, when described the 3rd color is green,
Yield value, the yield value of the second color and the yield value of the 3rd color of the first color in image processor according to the gain correction value of the gain correction value of the first color of obtaining, the second color and Set For Current, calculate the yield value of the first new color of described camera, the yield value of the yield value of new the second color and new the 3rd color comprises:
According to following formula, calculate the yield value R of the first new color of described camera, the yield value B of the yield value G of new the second color and new the 3rd color:
R:G:B=R
0r:G
0: B
0b, wherein, R
0for the yield value of described redness, G
0for the yield value of described green, B
0for the yield value of described blueness, r is that red gain correction value and b is blue gain correction value.
4. method according to claim 2, is characterized in that, when described the first color is red, described the second color is blue, when described the 3rd color is green,
The acquisition methods of the yield value of first color of Set For Current in image processor, the yield value of the second color and the yield value of the 3rd color, comprising:
When camera obtains the picture of scene, described picture is divided into the region that a plurality of sizes are identical, and calculates respectively the average brightness in region described in each, the region of getting average brightness maximum is white portion;
Calculate red value mean value r, green value mean value g and the blue valve mean value b of described white portion, and calculate the red yield value of described camera under Automatic white balance pattern and be:
green yield value is: G
0=1 and blue yield value be
5. according to the method described in claim 1-4 any one, it is characterized in that, obtain the gain correction value of the first color and the gain correction value of the second color that user arranges, comprising:
Obtain the gain correction value of the first color of correction progress bar setting and the gain correction value of the second color of the correction progress bar setting that user passes through the second color that user passes through the first color.
6. a consistency calibrating installation for camera, is characterized in that, comprising:
Correction value acquiring unit, the gain correction value of the first color and the gain correction value of the second color that for obtaining user, arrange;
Yield value pre-sets unit, for obtaining in advance the yield value of the yield value of the first color of described camera, the yield value of the second color and the 3rd color, and the yield value of the yield value of the yield value of described the first color, described the second color and described the 3rd color is exported to image processor;
New value computing unit, for according to the gain correction value of the first color obtained, the gain correction value of the second color and Set For Current at the yield value of the yield value of the first color of image processor, the yield value of the second color and the 3rd color, calculate the yield value of the first new color of described camera the yield value of the yield value of new the second color and new the 3rd color;
Graphics processing unit, for the yield value of the yield value of the yield value of the first new color of described camera, new the second color and new the 3rd color is exported to image processor, the image that the yield value of the yield value of new the second color and new the 3rd color photographs camera so that image processor adopts the yield value of the first new color is processed.
7. device according to claim 6, is characterized in that,
Described the first color is red, and described the second color is blue, and described the 3rd color is green;
Described the first color is red, and described the second color is green, and described the 3rd color is blue; Or
Described the first color is green, and described the second color is blue, and described the 3rd color is red.
8. device according to claim 7, is characterized in that, described new value computing unit specifically for:
When described the first color is red, described the second color be blue, and when described the 3rd color be green, foundation is formula as follows, calculates the yield value R of the first new color of described camera, the yield value B of the yield value G of new the second color and new the 3rd color:
R:G:B=R
0r:G
0: B
0b, wherein, R
0for the yield value of described redness, G
0for the yield value of described green, B
0for the yield value of described blueness, r is that red gain correction value and b is blue gain correction value.
9. according to the device described in claim 6-8 any one, it is characterized in that, described correction value acquiring unit specifically for:
Obtain the gain correction value of the first color of correction progress bar setting and the gain correction value of the second color of the correction progress bar setting that user passes through the second color that user passes through the first color.
10. a mobile device, is characterized in that, described mobile device comprises the device of the consistency calibration of the camera as described in claim 6-9 any one.
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| CN105120247A (en) * | 2015-09-10 | 2015-12-02 | 联想(北京)有限公司 | White-balance adjusting method and electronic device |
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| CN107360418A (en) * | 2017-09-21 | 2017-11-17 | 长沙全度影像科技有限公司 | A kind of panorama camera colour consistency evaluation system and method |
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