CN109068116A - Image processing method, device, mobile terminal and storage medium based on light filling - Google Patents
Image processing method, device, mobile terminal and storage medium based on light filling Download PDFInfo
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- CN109068116A CN109068116A CN201811014395.5A CN201811014395A CN109068116A CN 109068116 A CN109068116 A CN 109068116A CN 201811014395 A CN201811014395 A CN 201811014395A CN 109068116 A CN109068116 A CN 109068116A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
- H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
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- Image Processing (AREA)
- Studio Devices (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
The embodiment of the invention provides image processing method, device, mobile terminal and storage mediums based on light filling, which comprises when starting the camera, the background color image data being displayed in white in the screen, to emit the light of setting colour temperature；Setting data are read in specified storage region, the data that set is the color gains of the colour temperature setting for the screen；Under the light of the colour temperature, the camera acquisition candidate image data are called；The color of the candidate image data is corrected according to the color gain, obtains destination image data.Corresponding color gain gain is set for the colour temperature of screen, color error ratio caused by can correcting because of screen color temp difference realizes the color adjustment for screen personalization difference, it is normal to protect positive acquired image data colour temperature.
Description
Technical field
The present invention relates to the technical fields of communication, whole more particularly to the image processing method based on light filling, device, movement
End and storage medium.
Background technique
With the development of science and technology, the mobile terminals such as mobile phone, tablet computer, in the work of people, study, daily exchange
Etc. various aspects utilization rate it is also higher and higher.
Currently, the authenticity in order to guarantee image data, can be arranged corresponding color gain gain to camera, to acquisition
To the color component of image data be corrected.
But the scenes such as self-timer are being carried out using mobile terminal, it, can be with other than using preposition flash lamp to carry out light filling
Brightness, is enhanced to the several times of maximum brightness by the image being displayed in white in screen, thus realize the effect of light compensating lamp, at this point,
Often there is deviation in the color of acquired image data under the light filling of screen.
Summary of the invention
The embodiment of the present invention proposes image processing method, device, mobile terminal and storage medium based on light filling, with solution
Certainly image data is caused the problem of color error ratio occur using screen light filling.
According to one aspect of the present invention, a kind of image processing method based on light filling is provided, is applied in mobile terminal
In, have in the mobile terminal towards identical camera and screen, which comprises
When starting the camera, the background color image data being displayed in white in the screen, to emit setting colour temperature
Light；
Setting data are read in specified storage region, the data that set is the colors of the colour temperature setting for the screen
Color gain；
Under the light of the colour temperature, the camera acquisition candidate image data are called；
The color of the candidate image data is corrected according to the color gain, obtains destination image data.
Optionally, further includes:
In test box, start the camera, and the background color image data being displayed in white in the screen, with to test
The light of card transmitting setting colour temperature；
Under the light of the colour temperature, call the camera to the test card acquisition correction image data；
Color gain is calculated according to the image correcting data.
It is optionally, described that color gain is calculated according to the image correcting data, comprising:
Total color range number of each color component in the image correcting data is counted, the color component includes red point
Amount, green component, blue component；
First object component and the second target component are determined from the color component based on total color range number, described the
One target component be total highest color component of color range number, second target component be except the first object component it
Other outer color components；
Reference color gain is set by the color gain of first color component；
Total color range number of total color range number and second target component based on the first object component calculates color range system
Number, the color range coefficient are greater than 1；
The color range coefficient is configured to the reference color gain, the color gain as second target component.
Optionally, further includes:
In the test box, start the camera, and the background color image data being displayed in white in the screen, with to
The light of the test card transmitting setting colour temperature；
Under the light of the colour temperature, call the camera to the test card acquisition testing image data；
The color of the detection image data is corrected according to the color gain, obtains authentication image data；
The authentication image data are compared with the image correcting data, to verify the effective of the color gain
Property.
Optionally, described to compare the authentication image data with the image correcting data, to verify the color
The validity of color gain, comprising:
Calculate the first color error ratio value of the image correcting data；
Calculate the second color error ratio value of the authentication image data；
Judge whether the second color error ratio value is less than the first color error ratio value；
If so, determining that the color gain is effective；
If not, it is determined that the color gain is invalid.
Optionally, the first color error ratio value for calculating the image correcting data, comprising:
The variance for calculating color component in the image correcting data, as the first color error ratio value；
The second color error ratio value for calculating the authentication image data, comprising:
The variance for calculating color component in the authentication image data, as the second color error ratio value.
According to another aspect of the present invention, a kind of image processing apparatus based on light filling is provided, is applied in mobile terminal
In, have in the mobile terminal towards identical camera and screen, described device includes:
Supplementary lighting module is imaged, the background color picture number for being displayed in white in the screen when starting the camera
According to emit the light of setting colour temperature；
Color gain read module, for reading setting data in specified storage region, it is described set data as
The color gain of the colour temperature setting of the screen；
Candidate image data acquisition module, under the light of the colour temperature, calling the candidate figure of camera acquisition
As data；
Candidate image Data correction module, for correcting the color of the candidate image data according to the color gain,
Obtain destination image data.
Optionally, further includes:
Supplementary lighting module is corrected, for starting the camera, and the background color being displayed in white in the screen in test box
Image data, to emit the light of setting colour temperature to test card；
Image correcting data acquisition module, for calling the camera to the test under the light of the colour temperature
Card acquisition correction image data；
Color gain computing module, for calculating color gain according to the image correcting data.
Optionally, the color gain computing module includes:
Total color range number statistic submodule, for counting total color range number of each color component in the image correcting data,
The color component includes red component, green component, blue component；
Component distinguish submodule, for based on total color range number from the color component determine first object component and
Second target component, the first object component are total highest color component of color range number, and second target component is
Other color components in addition to the first object component；
Submodule is arranged in reference color gain, for setting reference color for the color gain of first color component
Gain；
Color range coefficient computational submodule, for total color range number and second target point based on the first object component
Total color range number of amount calculates color range coefficient, and the color range coefficient is greater than 1；
Color range coefficient configures submodule, for configuring the color range coefficient to the reference color gain, as described the
The color gain of two target components.
Optionally, further includes:
Supplementary lighting module is verified, for starting the camera in the test box, and be displayed in white in the screen
Background color image data, to emit the light of setting colour temperature to the test card；
Detection image data acquisition module, for calling the camera to the test under the light of the colour temperature
Card acquisition testing image data；
Detection image Data correction module, for correcting the color of the detection image data according to the color gain,
Obtain authentication image data；
Image data contrast module, for the authentication image data to be compared with the image correcting data, with
Verify the validity of the color gain.
Optionally, described image data comparison module includes:
First color error ratio value computational submodule, for calculating the first color error ratio value of the image correcting data；
Second color error ratio value computational submodule, for calculating the second color error ratio value of the authentication image data；
Color error ratio value judging submodule, for judging it is inclined whether the second color error ratio value is less than first color
Difference；Submodule is effectively determined if so, calling, and determines submodule in vain if it is not, then calling；
Submodule is effectively determined, for determining that the color gain is effective；
It is invalid to determine submodule, for determining that the color gain is invalid.
Optionally, the first color error ratio value computational submodule includes:
First variance computing unit, for calculating the variance of color component in the image correcting data, as the first color
Color deviation；
The second color error ratio value computational submodule includes:
Second variance computing unit, for calculating the variance of color component in the authentication image data, as the second color
Color deviation.
According to another aspect of the present invention, a kind of mobile terminal is provided, which is characterized in that including processor, memory
And it is stored in the computer program that can be run on the memory and on the processor, the computer program is by the place
Manage the step of realizing the photographic method when device executes.
According to another aspect of the present invention, a kind of computer readable storage medium is provided, which is characterized in that the calculating
Computer program is stored on machine readable storage medium storing program for executing, and the photographic method is realized when the computer program is executed by processor
The step of.
The embodiment of the present invention includes following advantages:
In embodiments of the present invention, when starting camera, the background color image data being displayed in white in screen, with transmitting
The light for setting colour temperature reads the color gain being arranged for the colour temperature of screen in specified storage region, in the light of the colour temperature
Under line, camera is called to acquire candidate image data, the color of candidate image data is corrected according to color gain, obtains target figure
As data, corresponding color gain gain, color caused by can correcting because of screen color temp difference are set for the colour temperature of screen
Deviation realizes the color adjustment for screen personalization difference, and it is normal to protect positive acquired image data colour temperature.
Detailed description of the invention
Fig. 1 is a kind of step flow chart of image processing method based on light filling of one embodiment of the invention；
Fig. 2 is the step flow chart of another image processing method based on light filling of one embodiment of the invention；
Fig. 3 is a kind of structural block diagram of image processing apparatus based on light filling of one embodiment of the invention；
A kind of hardware structural diagram of Fig. 4 mobile terminal of each embodiment to realize the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Referring to Fig.1, a kind of step process of image processing method based on light filling of one embodiment of the invention is shown
Figure, can specifically include following steps:
Step 101, when starting the camera shooting, the background color image data being displayed in white in the screen is set with transmitting
The light of fixation temperature.
In the concrete realization, the embodiment of the present invention can be using in the terminal, for example, mobile phone, tablet computer, can wear
Wear equipment (such as VR (Virtual Reality, virtual reality) glasses, the VR helmet, smartwatch) etc., the embodiment of the present invention pair
This is without restriction.
In the terminal configured with one or more cameras (Camera), such as dual camera, three cameras, generally
Including camera lens (Lens), pedestal (Holder), infrared filter (IR), imaging sensor (Sensor), image-signal processor
The components such as (Image Signal Processing, ISP), circuit board, for acquiring image data.
Furthermore, camera can be the back (also known as rear camera) that mobile terminal is arranged in, and can also set
Front (also known as front camera) in mobile terminal and screen are set towards identical, the embodiment of the present invention does not also limit this
System.
The operating system of mobile terminal includes Android (Android), IOS, Windows Phone, Windows etc., can
To support to run a variety of applications for calling camera, for example, camera applications, browser, shopping application, instant messaging application
Deng calling camera taken pictures, recorded a video, the operation such as barcode scanning two dimensional code.
It is taking pictures and (is taking pictures for user, and can be described as self-timer), in the scenes such as recognition of face, if mobile terminal receives
To the enabled instruction of front camera, then it can star front camera, pending acquisition image data, at the same time (especially
It is in exposure), the background color image data that screen can be driven to be displayed in white, and brightness can be improved, to emit setting colour temperature
Light, carry out light filling operation.
Wherein, the enabled instruction of camera refer to starting camera instruction, user can by click camera applications, or
Person presses the enabled instruction that the modes such as specified physical button trigger camera.
It should be noted that colour temperature is the scale (unit is Kelvin K) for indicating that light source is photochromic, for a user, color
The color change that warm human eye is experienced, for mobile terminal, due to the limitation of production technology, for a movement
In accordance with hardware index, i.e., together terminal, the value (such as 2000K) that the colour temperature of same model screen differs certain with standard color temperature also think
A mobile terminal, the colour temperature difference of same model screen are possible larger, it will cause the color of acquired image data inclined
Difference is more obvious.
I.e. under same standard (being such as displayed in white picture), the screen hair of the mobile terminal of same model, same model
The colour temperature of light out may have deviation.
Step 102, setting data are read in specified storage region.
Wherein, data are set as the color gain of the colour temperature setting for screen.
It, can be in advance for the colour temperature of the screen emitted light of current mobile terminal, setting using the embodiment of the present invention
Corresponding color gain gain, for balancing the color component of the image data acquired under the light of the colour temperature.
Color gain gain can be used as the setting data used in scenes such as self-timer, recognitions of face, be stored in specified
Storage region, as diag subregion can then be read after the light for detecting screen emissions setting from the specified storage region
Color gain gain is taken, is written in ISP.
Step 103, under the light of the colour temperature, the camera acquisition candidate image data are called.
In practical applications, the light for the set colour temperature that screen issues is irradiated on scenery (SCENE), scenery (SCENE)
Emit the light, and the surface imaging sensor (Sensor) is projected by the optical imagery that the camera lens of camera (Lens) is generated
On, electric signal is then turned to, becomes data image signal after A/D (analog-to-digital conversion) conversion, by digital signal processing chip
(DSP) specific image file or is compressed and is converted into code database to data image signal, as candidate image data.
Step 104, the color of the candidate image data is corrected according to the color gain, obtains destination image data.
For camera under the light of screen emissions candidate image data collected, can be according to the screen in ISP
Color gain gain set by the light of curtain corrects the color of the candidate image data, i.e., by the color component of each pixel
Multiplied by corresponding color gain gain, to obtain the destination image data of color recovery normal color temperature.
Furthermore, color gain gain may include red gain R_gain, green gain G_gain, blue gain
B_gain, and the color of candidate image data includes red component R, green component G, blue component B.
By the red component R of each pixel multiplied by red gain R_gain, green component G multiplied by green gain G_
Gain, blue component B are multiplied by blue gain B_gain.
In embodiments of the present invention, when starting camera, the background color image data being displayed in white in screen, with transmitting
The light for setting colour temperature reads the color gain being arranged for the colour temperature of screen in specified storage region, in the light of the colour temperature
Under line, camera is called to acquire candidate image data, the color of candidate image data is corrected according to color gain, obtains target figure
As data, corresponding color gain gain, color caused by can correcting because of screen color temp difference are set for the colour temperature of screen
Deviation realizes the color adjustment for screen personalization difference, and it is normal to protect positive acquired image data colour temperature.
Referring to Fig. 2, the step flow chart of another photographic method of one embodiment of the invention is shown, specifically can wrap
Include following steps:
Step 201, in test box, start the camera, and the background color image data being displayed in white in the screen,
To emit the light of setting colour temperature to test card.
Step 202, under the light of the colour temperature, call the camera to the test card acquisition correction picture number
According to.
Step 203, color gain is calculated according to the image correcting data.
Before mobile terminal factory, color gain gain can be calculated for the colour temperature of its screen.
Furthermore, work inspection can issue first property value, such as flash.wb.correct=1 to mobile terminal, and will
Mobile terminal is placed in a test box.
The inner wall black of the test box, and it is placed with a test card, the red component R, green component of the test card itself
G, blue component B is identical, such as 18% gray card, is equal to the ring of light as standard color, the light exposure under luminous environment when surveying light
The average value (i.e. Correct exposure amount) of various colors light exposure under border.
Mobile terminal reads the first property value, then executes the operation for calculating color gain gain.
At this point, mobile terminal can start front camera, image data to be collected, and the image for driving screen to be displayed in white
Data carry out light filling operation to emit the light of setting colour temperature to test card.
Under conditions of the light of the colour temperature carries out light filling to test card, front camera acquires image data, as school
Positive image data.
The color of image correcting data is analyzed, to calculate the color gain for being suitble to the colour temperature of the screen
Gain, and as the setting data used in scenes such as self-timer, recognitions of face, it stores to specified storage region, such as diag points
Area.
In one embodiment of the invention, step 203 may include following sub-step:
Sub-step S11 counts total color range number of each color component in the image correcting data.
In the concrete realization, color component is typically divided into multiple color ranges, such as 0-255, passes through the image correcting data that adds up
In each each color component of pixel color range, to obtain total color range number of each color component.
Wherein, color component includes red component R, green component G, blue component B.
Sub-step S12 determines first object component and the second target based on total color range number from the color component
Component.
Wherein, first object component is total highest color component of color range number, and the second target component is except first object point
Other color components except amount.
The color gain of first color component is set reference color gain by sub-step S13.
Sub-step S14, total color range number of total color range number and second target component based on the first object component
Calculate color range coefficient.
Sub-step S15 configures the color range coefficient to the reference color gain, the color as second target component
Color gain.
The color component (i.e. first object component) most for accounting, then can set reference colours for its color gain
Color gain, such as 1.
The color component (i.e. second target component) less for accounting, then can total color range number and first object component
Total color range number compares, to calculate color range coefficient, wherein color range coefficient is greater than 1.
Reference color gain is configured into color range coefficient, thus the color gain of the second target component, since color range coefficient is big
In 1, therefore, the color gain of the second target component is greater than the color gain of first object component, to increase the second target point
The color component of amount balances the accounting of each color component.
In one example, for the camera for using some platform chip (such as DSP, ISP):
If total color range number highest of red component R, the color that can calculate each color component in the following way increases
Benefit:
R_gain=Basic_gain
B_gain=((r+b) 2b) * Basic_gain
G_gain=((r+g) 2g) * Basic_gain
If total color range number highest of green component G, the color that can calculate each color component in the following way increases
Benefit:
G_gain=Basic_gain
R_gain=((g+r) 2r) * Basic_gain
B_gain=((g+b) 2b) * Basic_gain
If total color range number highest of blue component B, the color that can calculate each color component in the following way increases
Benefit:
B_gain=Basic_gain
G_gain=((b+g) 2g) * Basic_gain
R_gain=((b+r) 2r) * Basic_gain
Wherein, Basic_gain is benchmark color gain, and r is total color range number of red component R, and g is the total of green component G
Color range number, total color range number of b blue component B.
In embodiments of the present invention, in test box, driving screen emits the light of setting colour temperature to test card, in colour temperature
Light under, to test card acquisition correction image data, color gain is calculated according to image correcting data, is not increasing hardware one
On the basis of cause property control cost, by corresponding color gain at screen light filling measuring and calculation, it is ensured that in screen light filling
When collect the colour temperature consistency of image data.
Step 204, in the test box, start the camera, and the background color image being displayed in white in the screen
Data, to emit the light of setting colour temperature to the test card.
Step 205, under the light of the colour temperature, call the camera to the test card acquisition testing picture number
According to.
Step 206, the color of the detection image data is corrected according to the color gain, obtains authentication image data.
Step 207, the authentication image data are compared with the image correcting data, is increased with verifying the color
The validity of benefit.
It, can be for the validity of the colour temperature verifying color gain gain of its screen before mobile terminal factory.
Furthermore, work inspection can issue the second attribute value, such as flash.wb.correct=2 to mobile terminal, and will
Mobile terminal is placed in a test box.
The inner wall black of the test box, and it is placed with a test card, such as 18% gray card.
It should be noted that in the production line, the used test box of color gain gain and test card are calculated, with verifying color
Color the used test box of gain gain validity is identical as test card at least type.
Mobile terminal reads second attribute value, then executes the operation of verifying color gain gain validity.
At this point, mobile terminal can start front camera, image data to be collected, and the image for driving screen to be displayed in white
Data carry out light filling operation to emit the light of setting colour temperature to test card.
Under conditions of the light of the colour temperature carries out light filling to test card, front camera acquires image data, as inspection
Altimetric image data.
After the light for detecting screen emissions setting, then color gain can be read from the specified storage region
Gain is written in ISP.
In ISP, the color of the detection image data is corrected according to the color gain gain calculated before, i.e., by each picture
The color component of vegetarian refreshments is multiplied by corresponding color gain gain, to obtain authentication image data.
The color between the authentication image data after image correcting data and correction color before comparison correction color,
To verify the validity of color gain gain.
If color gain gain is effective, the operation of the colour temperature setting color gain gain for screen can be terminated.
If color gain gain is invalid, the color gain gain stored in specified region can be cleared up, and hold again
The hand-manipulating of needle (re-execute the steps 201- step 207) to the operation of the colour temperature setting color gain gain of screen.
In one embodiment of the invention, step 207 may include following sub-step:
Sub-step S21 calculates the first color error ratio value of the image correcting data.
In theoretical situation, the real colour of the certifiable image data of balance between each color component, i.e. red component R,
Total color range number between green component G and blue component B is equal.
For the image correcting data before correction color, the first color error ratio value can be calculated.
Wherein, the first color error ratio value can refer to that the actual color in image correcting data deviates standard color (each color
Balanced between component) degree.
In one example, the variance that color component in image correcting data can be calculated, as the first color error ratio value.
Sub-step S22 calculates the second color error ratio value of the authentication image data.
For the authentication image data after correction color, the second color error ratio value can be calculated.
Wherein, people's color error ratio value can refer to that the actual color in authentication image data deviates standard color (each color
Balanced between component) degree.
In one example, the variance that color component in authentication image data can be calculated, as the second color error ratio value.
Sub-step S23, judges whether the second color error ratio value is less than the first color error ratio value；If so, holding
Row sub-step S24, if it is not, then executing sub-step S25.
Sub-step S24 determines that the color gain is effective.
Sub-step S25 determines that the color gain is invalid.
The second color error ratio value after the positive color of high-ranking officers is compared with the first color error ratio value before correction color.
If the second color error ratio value less than the first color error ratio value, indicates that color error ratio reduces, it is believed that color increases
Beneficial gain is effective.
Further, one threshold value can be set on the basis of the second color error ratio value is less than the first color error ratio value, the
Two color error ratio values are less than the threshold value, it is believed that color gain gain is effective.
If the second color error ratio value is greater than the first color error ratio value, indicate that color error ratio has no reduction, it is believed that color
Color gain gain is invalid.
In embodiments of the present invention, in test box, driving screen emits the light of setting colour temperature to the test card,
Under the light of colour temperature, to test card acquisition testing image data, the color of detection image data is corrected according to color gain, is obtained
Authentication image data compare authentication image data with image correcting data, can be with to verify the validity of color gain
Guarantee that color gain is effective, the color error ratio of recoverable acquired image data in screen light filling.
Step 208, when starting the camera, the background color image data being displayed in white in the screen, with transmitting
Set the light of colour temperature.
Step 209, setting data are read in specified storage region.
Wherein, data are set as the color gain of the colour temperature setting for screen.
Step 210, under the light of the colour temperature, the camera acquisition candidate image data are called.
Step 211, the color of the candidate image data is corrected according to the color gain, obtains destination image data.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
Referring to Fig. 3, a kind of structural block diagram of camera arrangement of one embodiment of the invention is shown, is applied in mobile terminal
In, have in the mobile terminal towards identical camera and screen, described device can specifically include following module:
Supplementary lighting module 301 is imaged, the background color image for being displayed in white in the screen when starting the camera
Data, to emit the light of setting colour temperature；
Color gain read module 302, for reading setting data in specified storage region, the data that set is needles
To the color gain of the colour temperature setting of the screen；
Candidate image data acquisition module 303, under the light of the colour temperature, calling the camera acquisition candidate
Image data；
Candidate image Data correction module 304, for correcting the color of the candidate image data according to the color gain
Coloured silk obtains destination image data.
In one embodiment of the invention, further includes:
Supplementary lighting module is corrected, for starting the camera, and the background color being displayed in white in the screen in test box
Image data, to emit the light of setting colour temperature to test card；
Image correcting data acquisition module, for calling the camera to the test under the light of the colour temperature
Card acquisition correction image data；
Color gain computing module, for calculating color gain according to the image correcting data.
In one embodiment of the invention, the color gain computing module includes:
Total color range number statistic submodule, for counting total color range number of each color component in the image correcting data,
The color component includes red component, green component, blue component；
Component distinguish submodule, for based on total color range number from the color component determine first object component and
Second target component, the first object component are total highest color component of color range number, and second target component is
Other color components in addition to the first object component；
Submodule is arranged in reference color gain, for setting reference color for the color gain of first color component
Gain；
Color range coefficient computational submodule, for total color range number and second target point based on the first object component
Total color range number of amount calculates color range coefficient, and the color range coefficient is greater than 1；
Color range coefficient configures submodule, for configuring the color range coefficient to the reference color gain, as described the
The color gain of two target components.
In one embodiment of the invention, further includes:
Supplementary lighting module is verified, for starting the camera in the test box, and be displayed in white in the screen
Background color image data, to emit the light of setting colour temperature to the test card；
Detection image data acquisition module, for calling the camera to the test under the light of the colour temperature
Card acquisition testing image data；
Detection image Data correction module, for correcting the color of the detection image data according to the color gain,
Obtain authentication image data；
Image data contrast module, for the authentication image data to be compared with the image correcting data, with
Verify the validity of the color gain.
In one embodiment of the invention, described image data comparison module includes:
First color error ratio value computational submodule, for calculating the first color error ratio value of the image correcting data；
Second color error ratio value computational submodule, for calculating the second color error ratio value of the authentication image data；
Color error ratio value judging submodule, for judging it is inclined whether the second color error ratio value is less than first color
Difference；Submodule is effectively determined if so, calling, and determines submodule in vain if it is not, then calling；
Submodule is effectively determined, for determining that the color gain is effective；
It is invalid to determine submodule, for determining that the color gain is invalid.
In one example of an embodiment of the present invention, the first color error ratio value computational submodule includes:
First variance computing unit, for calculating the variance of color component in the image correcting data, as the first color
Color deviation；
The second color error ratio value computational submodule includes:
Second variance computing unit, for calculating the variance of color component in the authentication image data, as the second color
Color deviation.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
In embodiments of the present invention, when starting camera, the background color image data being displayed in white in screen, with transmitting
The light for setting colour temperature reads the color gain being arranged for the colour temperature of screen in specified storage region, in the light of the colour temperature
Under line, camera is called to acquire candidate image data, the color of candidate image data is corrected according to color gain, obtains target figure
As data, corresponding color gain gain, color caused by can correcting because of screen color temp difference are set for the colour temperature of screen
Deviation realizes the color adjustment for screen personalization difference, and it is normal to protect positive acquired image data colour temperature.
A kind of hardware structural diagram of Fig. 4 mobile terminal of each embodiment to realize the present invention.
The mobile terminal 400 includes but is not limited to: radio frequency unit 401, network module 402, audio output unit 403, defeated
Enter unit 404, sensor 405, display unit 406, user input unit 407, interface unit 408, memory 409, processor
The components such as 410 and power supply 411.It will be understood by those skilled in the art that mobile terminal structure shown in Fig. 4 is not constituted
Restriction to mobile terminal, mobile terminal may include than illustrating more or fewer components, perhaps combine certain components or
Different component layouts.In embodiments of the present invention, mobile terminal include but is not limited to mobile phone, tablet computer, laptop,
Palm PC, car-mounted terminal, wearable device and pedometer etc..
Wherein, processor 410, the background color image for being displayed in white in the screen when starting the camera
Data, to emit the light of setting colour temperature；Setting data are read in specified storage region, the data that set is for described
The color gain of the colour temperature setting of screen；Under the light of the colour temperature, the camera acquisition candidate image data are called；Root
The color of the candidate image data is corrected according to the color gain, obtains destination image data.
In embodiments of the present invention, when starting camera, the background color image data being displayed in white in screen, with transmitting
The light for setting colour temperature reads the color gain being arranged for the colour temperature of screen in specified storage region, in the light of the colour temperature
Under line, camera is called to acquire candidate image data, the color of candidate image data is corrected according to color gain, obtains target figure
As data, corresponding color gain gain, color caused by can correcting because of screen color temp difference are set for the colour temperature of screen
Deviation realizes the color adjustment for screen personalization difference, and it is normal to protect positive acquired image data colour temperature.
It should be understood that the embodiment of the present invention in, radio frequency unit 401 can be used for receiving and sending messages or communication process in, signal
Send and receive, specifically, by from base station downlink data receive after, to processor 410 handle；In addition, by uplink
Data are sent to base station.In general, radio frequency unit 401 includes but is not limited to antenna, at least one amplifier, transceiver, coupling
Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 401 can also by wireless communication system and network and other set
Standby communication.
Mobile terminal provides wireless broadband internet by network module 402 for user and accesses, and such as user is helped to receive
It sends e-mails, browse webpage and access streaming video etc..
Audio output unit 403 can be received by radio frequency unit 401 or network module 402 or in memory 409
The audio data of storage is converted into audio signal and exports to be sound.Moreover, audio output unit 403 can also be provided and be moved
The relevant audio output of specific function that dynamic terminal 400 executes is (for example, call signal receives sound, message sink sound etc.
Deng).Audio output unit 403 includes loudspeaker, buzzer and receiver etc..
Input unit 404 is for receiving audio or video signal.Input unit 404 may include graphics processor
(Graphics Processing Unit, GPU) 4041 and microphone 4042, graphics processor 4041 is in video acquisition mode
Or the image data of the static images or video obtained in image capture mode by image capture apparatus (such as camera) carries out
Reason.Treated, and picture frame may be displayed on display unit 406.Through graphics processor 4041, treated that picture frame can be deposited
Storage is sent in memory 409 (or other storage mediums) or via radio frequency unit 401 or network module 402.Mike
Wind 4042 can receive sound, and can be audio data by such acoustic processing.Treated audio data can be
The format output that mobile communication base station can be sent to via radio frequency unit 401 is converted in the case where telephone calling model.
Mobile terminal 400 further includes at least one sensor 405, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 4061, and proximity sensor can close when mobile terminal 400 is moved in one's ear
Display panel 4061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, it can detect that size and the direction of gravity when static, can be used to identify mobile terminal posture (ratio
Such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap)；It passes
Sensor 405 can also include fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, wet
Meter, thermometer, infrared sensor etc. are spent, details are not described herein.
Display unit 406 is for showing information input by user or being supplied to the information of user.Display unit 406 can wrap
Display panel 4061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode can be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 4061.
User input unit 407 can be used for receiving the number or character information of input, and generate the use with mobile terminal
Family setting and the related key signals input of function control.Specifically, user input unit 407 include touch panel 4071 and
Other input equipments 4072.Touch panel 4071, also referred to as touch screen collect the touch operation of user on it or nearby
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 4071 or in touch panel 4071
Neighbouring operation).Touch panel 4071 may include both touch detecting apparatus and touch controller.Wherein, touch detection
Device detects the touch orientation of user, and detects touch operation bring signal, transmits a signal to touch controller；Touch control
Device processed receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor 410, receiving area
It manages the order that device 410 is sent and is executed.Furthermore, it is possible to more using resistance-type, condenser type, infrared ray and surface acoustic wave etc.
Seed type realizes touch panel 4071.In addition to touch panel 4071, user input unit 407 can also include other input equipments
4072.Specifically, other input equipments 4072 can include but is not limited to physical keyboard, function key (such as volume control button,
Switch key etc.), trace ball, mouse, operating stick, details are not described herein.
Further, touch panel 4071 can be covered on display panel 4061, when touch panel 4071 is detected at it
On or near touch operation after, send processor 410 to determine the type of touch event, be followed by subsequent processing device 410 according to touching
The type for touching event provides corresponding visual output on display panel 4061.Although in Fig. 4, touch panel 4071 and display
Panel 4061 is the function that outputs and inputs of realizing mobile terminal as two independent components, but in some embodiments
In, can be integrated by touch panel 4071 and display panel 4061 and realize the function that outputs and inputs of mobile terminal, it is specific this
Place is without limitation.
Interface unit 408 is the interface that external device (ED) is connect with mobile terminal 400.For example, external device (ED) may include having
Line or wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless data port, storage card end
Mouth, port, the port audio input/output (I/O), video i/o port, earphone end for connecting the device with identification module
Mouthful etc..Interface unit 408 can be used for receiving the input (for example, data information, electric power etc.) from external device (ED) and
By one or more elements that the input received is transferred in mobile terminal 400 or can be used in 400 He of mobile terminal
Data are transmitted between external device (ED).
Memory 409 can be used for storing software program and various data.Memory 409 can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 409 may include high-speed random access memory, it can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 410 is the control centre of mobile terminal, utilizes each of various interfaces and the entire mobile terminal of connection
A part by running or execute the software program and/or module that are stored in memory 409, and calls and is stored in storage
Data in device 409 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.Place
Managing device 410 may include one or more processing units；Preferably, processor 410 can integrate application processor and modulatedemodulate is mediated
Manage device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is main
Processing wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 410.
Mobile terminal 400 can also include the power supply 411 (such as battery) powered to all parts, it is preferred that power supply 411
Can be logically contiguous by power-supply management system and processor 410, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
In addition, mobile terminal 400 includes some unshowned functional modules, details are not described herein.
Preferably, the embodiment of the present invention also provides a kind of mobile terminal, including processor 410, and memory 409 is stored in
On memory 409 and the computer program that can run on the processor 410, the computer program are executed by processor 410
Each process of the above-mentioned photographic method embodiment of Shi Shixian, and identical technical effect can be reached, to avoid repeating, here no longer
It repeats.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize each process of above-mentioned photographic method embodiment when being executed by processor, and can reach
Identical technical effect, to avoid repeating, which is not described herein again.Wherein, the computer readable storage medium is deposited Ru read-only
Reservoir (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM),
Magnetic or disk etc..
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention.
Claims (10)
1. a kind of image processing method based on light filling, which is characterized in that application in the terminal, has in the mobile terminal
Have towards identical camera and screen, which comprises
When starting the camera, the background color image data being displayed in white in the screen, to emit the light of setting colour temperature
Line；
Setting data are read in specified storage region, the data that set increase as the color of the colour temperature setting for the screen
Benefit；
Under the light of the colour temperature, the camera acquisition candidate image data are called；
The color of the candidate image data is corrected according to the color gain, obtains destination image data.
2. the method according to claim 1, wherein further include:
In test box, start the camera, and the background color image data being displayed in white in the screen, to send out to test card
Penetrate the light of setting colour temperature；
Under the light of the colour temperature, call the camera to the test card acquisition correction image data；
Color gain is calculated according to the image correcting data.
3. according to the method described in claim 2, it is characterized in that, described calculate color increasing according to the image correcting data
Benefit, comprising:
Count total color range number of each color component in the image correcting data, the color component includes red component, green
Colouring component, blue component；
First object component and the second target component, first mesh are determined from the color component based on total color range number
Mark component is total highest color component of color range number, and second target component is in addition to the first object component
Other color components；
Reference color gain is set by the color gain of first color component；
Total color range number of total color range number and second target component based on the first object component calculates color range coefficient, institute
Color range coefficient is stated greater than 1；
The color range coefficient is configured to the reference color gain, the color gain as second target component.
4. according to the method in claim 2 or 3, which is characterized in that further include:
In the test box, start the camera, and the background color image data being displayed in white in the screen, with to described
The light of test card transmitting setting colour temperature；
Under the light of the colour temperature, call the camera to the test card acquisition testing image data；
The color of the detection image data is corrected according to the color gain, obtains authentication image data；
The authentication image data are compared with the image correcting data, to verify the validity of the color gain.
5. according to the method described in claim 4, it is characterized in that, described by the authentication image data and the correction image
Data compare, to verify the validity of the color gain, comprising:
Calculate the first color error ratio value of the image correcting data；
Calculate the second color error ratio value of the authentication image data；
Judge whether the second color error ratio value is less than the first color error ratio value；
If so, determining that the color gain is effective；
If not, it is determined that the color gain is invalid.
6. according to the method described in claim 5, it is characterized in that,
The first color error ratio value for calculating the image correcting data, comprising:
The variance for calculating color component in the image correcting data, as the first color error ratio value；
The second color error ratio value for calculating the authentication image data, comprising:
The variance for calculating color component in the authentication image data, as the second color error ratio value.
7. a kind of image processing apparatus based on light filling, which is characterized in that application in the terminal, has in the mobile terminal
Have towards identical camera and screen, described device includes:
Supplementary lighting module is imaged, is used for when starting the camera, the background color image data being displayed in white in the screen, with
The light of transmitting setting colour temperature；
Color gain read module, for reading setting data in specified storage region, the data that set is for described
The color gain of the colour temperature setting of screen；
Candidate image data acquisition module, under the light of the colour temperature, calling the camera acquisition candidate image number
According to；
Candidate image Data correction module is obtained for correcting the color of the candidate image data according to the color gain
Destination image data.
8. device according to claim 7, which is characterized in that further include:
Supplementary lighting module is corrected, for starting the camera, and the background color image being displayed in white in the screen in test box
Data, to emit the light of setting colour temperature to test card；
Image correcting data acquisition module, for calling the camera to adopt the test card under the light of the colour temperature
Collect image correcting data；
Color gain computing module, for calculating color gain according to the image correcting data.
9. a kind of mobile terminal, which is characterized in that including processor, memory and be stored on the memory and can be described
The computer program run on processor is realized when the computer program is executed by the processor as in claim 1 to 6
The step of described in any item photographic methods.
10. a kind of computer readable storage medium, which is characterized in that store computer journey on the computer readable storage medium
Sequence realizes the step such as photographic method described in any one of claims 1 to 6 when the computer program is executed by processor
Suddenly.
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