CN108012078A - Brightness of image processing method, device, storage medium and electronic equipment - Google Patents
Brightness of image processing method, device, storage medium and electronic equipment Download PDFInfo
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- CN108012078A CN108012078A CN201711213031.5A CN201711213031A CN108012078A CN 108012078 A CN108012078 A CN 108012078A CN 201711213031 A CN201711213031 A CN 201711213031A CN 108012078 A CN108012078 A CN 108012078A
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- Prior art keywords
- brightness
- environmental information
- pending image
- image
- parameter
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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
- H04N23/76—Circuitry for compensating brightness variation in the scene by influencing the image 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
- H04N23/80—Camera processing pipelines; Components thereof
Abstract
This application involves a kind of brightness of image processing method, device, storage medium and electronic equipment.This method includes：Obtain pending image；Obtain the environmental information beforehand through the pending image obtained from dollying head；Corresponding object brightness parameter is determined according to the environmental information；Brightness processed is carried out to the pending image according to the object brightness parameter.Above-mentioned brightness of image processing method, device, storage medium and electronic equipment can improve the accuracy to brightness of image processing.
Description
Technical field
This application involves brightness of image processing technology field, more particularly to a kind of brightness of image processing method, device, deposits
Storage media and electronic equipment.
Background technology
Photographing device is when being shot, under different light environments, it is necessary to using corresponding luminance parameter, to shoot
Exquisite image.
Traditional brightness of image processing method, is shot using fixed luminance parameter, or according to base
In shooting existing environmental information in image to be generated, to calculate corresponding luminance parameter, joined according to the brightness calculated
It is several that reference object is shot so that the image showed is consistent with the brightness for the object that human eye perceives.But from this
Getable environmental information is limited in the image of shooting, therefore brightness reduction of traditional method to reference object is not accurate enough.
The content of the invention
The embodiment of the present application provides a kind of brightness of image processing method, device, storage medium and electronic equipment, can improve
The accuracy of the brightness reduction of reference object.
A kind of brightness of image processing method, including：
Obtain pending image；
Obtain the environmental information beforehand through the pending image obtained from dollying head；
Corresponding object brightness parameter is determined according to the environmental information；
Brightness processed is carried out to the pending image according to the object brightness parameter.
A kind of brightness of image processing unit, described device include：
Image collection module, for obtaining pending image
Environmental information generation module, for obtaining the ring beforehand through the pending image obtained from dollying head
Border information；
Brightness processed module, for determining corresponding object brightness parameter according to the environmental information；According to the target
Luminance parameter carries out brightness processed to the pending image.
A kind of computer-readable recording medium, is stored thereon with computer program, and the computer program is held by processor
The step of method described in each embodiment of the application is realized during row.
A kind of electronic equipment, including memory, processor and storage are on a memory and the meter that can run on a processor
The step of calculation machine program, the processor realizes method described in each embodiment of the application when performing the computer program.
Brightness of image processing method, device, storage medium and the electronic equipment that the embodiment of the present application is provided, when carrying out
During shooting image, the environmental information beforehand through pending image obtained from dollying head is obtained；And according to environmental information
Determine corresponding object brightness parameter；Due to introducing the environmental information of captured pending image, so as to calculate target
Luminance parameter provides more reference informations, improves the accuracy of the luminance parameter calculated, and then join further according to brightness
It is several that brightness processed is carried out to pending image, also accordingly improve the accuracy to brightness of image processing.
Brief description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of application, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the applied environment figure of brightness of image processing method in one embodiment；
Fig. 2 is the internal structure schematic diagram of electronic equipment in one embodiment；
Fig. 3 is the flow chart of brightness of image processing method in one embodiment；
Fig. 4 A are the schematic diagram of pending image in one embodiment；
Fig. 4 B are the schematic diagram of the environmental information of pending image in one embodiment；
Fig. 5 is the flow for the ambient light illumination for calculating pending image local environment in one embodiment according to environmental information
Figure；
Fig. 6 is the flow chart for determining corresponding object brightness parameter in one embodiment according to ambient light illumination；
Fig. 7 is the flow chart of brightness of image processing method in another embodiment；
Fig. 8 is the structure diagram of brightness of image processing unit in one embodiment；
Fig. 9 is the schematic diagram that circuit is shot in one embodiment.
Embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the object, technical solution and advantage of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the application, and
It is not used in restriction the application.
Fig. 1 is the applied environment figure of brightness of image processing method in one embodiment.With reference to as shown in Figure 1, electronic equipment
110 can call camera thereon to be shot, and such as carrying out real time scan to the object 120 in environment obtains two field picture, according to
The image of two field picture generation shooting.Alternatively, which can be dual camera, include main camera and secondary camera, root
Shooting is realized jointly according to the main camera and secondary camera, generates image.Electronic equipment can be by the two field picture or the figure of generation
Picture, as pending image, and obtains the environmental information beforehand through pending image obtained from dollying head；According to ring
Border information determines corresponding object brightness parameter；Brightness processed is carried out to pending image according to object brightness parameter.
Fig. 2 is the internal structure schematic diagram of electronic equipment in one embodiment.As shown in Fig. 2, the electronic equipment includes leading to
Cross processor, memory, display screen and the camera of system bus connection.Wherein, which, which is used to provide, calculates and controls
Ability, supports the operation of whole electronic equipment.Memory is used to store data, program etc., and at least one meter is stored on memory
Calculation machine program, the computer program can be executed by processor, to realize that what is provided in the embodiment of the present application is suitable for electronic equipment
Brightness of image processing method.Memory may include magnetic disc, CD, read-only memory (Read-Only Memory, ROM)
Deng non-volatile memory medium, or random access memory (Random-Access-Memory, RAM) etc..For example, in a reality
Apply in example, memory includes non-volatile memory medium and built-in storage.Non-volatile memory medium is stored with operating system, number
According to storehouse and computer program.It is stored with database and is used for realization a kind of brightness of image processing that following each embodiment is provided
The relevant data of method, for example the data such as image to be handled, environmental information can be stored.The computer program can be by processor institute
Perform, a kind of brightness of image processing method provided for the following each embodiment of realization.Built-in storage is non-volatile
Operating system and computer program in storage medium provide the running environment of cache.Display screen can be touch-screen, than
It is such as capacitance plate or electrical screen, for showing the visual informations such as pending image, may be utilized for detection and act on the display
The touch operation of screen, generates corresponding instruction.
It will be understood by those skilled in the art that structure shown in Figure 2, only part knot relevant with application scheme
The block diagram of structure, does not form the restriction for the electronic equipment being applied thereon to application scheme, and specific electronic equipment can be with
Including than more or fewer components shown in figure, either combining some components or being arranged with different components.Such as should
Electronic equipment may also include the network interface connected by system bus, and be led to by the network interface with miscellaneous equipment
Letter, than such as by data such as the image on the network interface and acquisition miscellaneous equipment or brightness algorithms.
In one embodiment, as shown in Figure 3, there is provided a kind of brightness of image processing method,
The present embodiment is mainly applied to illustrate in electronic equipment as shown in Figure 1 in this way, and this method includes：
Step 302, pending image is obtained.
Pending image refers to need the image for carrying out brightness processed, can be the image that generation has been taken, can also be
Under screening-mode, two field picture is obtained by camera real time scan.
When pending image is two field picture, when electronic equipment receives the instruction for opening camera, camera can be called
Into shooting state.The camera includes main camera and secondary camera.Can be by the main camera and/or secondary camera to clapping
The object taken the photograph in environment is scanned, and forms the two field picture.
When pending image is image that generation has been taken, electronic equipment can receive shooting instruction, be obtained according to scanning
The image of real-time two field picture generation shooting, the image of the generation is the pending image.Wherein, shooting instruction can be logical
Cross the shooting instruction of the triggerings such as the related touch control operation detected, the pressing operation of physical button or voice-controlled operations.Touch-control
Operation can be to touch clicking operation, touch long-press operation, touch the operation such as slide, multi-point touch operation.Electronic equipment can
There is provided and be used to trigger the shooting push button shot, when detecting the clicking operation to the button, trigger shooting instruction.Electronics
The also predeterminable shooting voice messaging for being used to trigger the shooting instruction of equipment.By calling pronunciation receiver, receive corresponding
Voice messaging, by parsing the voice messaging, when detecting that the voice messaging is matched with the shooting voice messaging, can trigger should
Shooting instruction.
Step 304, the environmental information beforehand through pending image obtained from dollying head is obtained.
Electronic equipment can be taken the photograph before pending image is generated or during pending image is generated by movement
Obtained as head and the relevant environmental information of pending image.Wherein, which is the letter of pending image local environment
Breath, the information comprising the scene in pending image He the periphery of the scene.The environmental information can be with image or two field picture
Data mode embodies, and each pixel in environmental information corresponds to the position in local environment, and the color which is presented is
Scanned for the correspondence position in the environment by camera and the color that shows.When by environmental information with image or two field picture
When form is presented, what which was showed is pending image local environment.
As shown in Figure 4 A and 4 B shown in FIG., wherein, Fig. 4 A are the schematic diagram of pending image, and Fig. 4 B are the pending image
The schematic diagram of environmental information.Wherein, the mainly cartoon portrait presented in pending image, and included in the environmental information
Outside the cartoon portrait, the letter such as white background of plant and cartoon portrait head on both sides also comprising portrait body both sides
Breath.It is to be appreciated that user can move the camera in shooting state before the pending image is shot.Electronics is set
It is standby can be by the movement of the camera, and record and sort out the environmental information of pending image.
Step 306, corresponding object brightness parameter is determined according to environmental information.
Wherein, luminance parameter is represented when handling the brightness of image, it is necessary to the parameter used.The luminance parameter may include
But it is not limited to the one or more therein such as sensitivity, light exposure, exposure time.Object brightness parameter represents pending in adjusting
When effect is presented in the brightness of image, used luminance parameter.Electronic equipment can carry out luminance parameter meter according to the environmental information
Calculate, to calculate the object brightness parameter for being suitable for the pending image.Normally, it is i.e. pending comprising this in the environmental information
The image content presented in image, therefore, the object brightness parameter is determined only on the basis of the environmental data.
In one embodiment, the predeterminable computation model for object brightness parameter of electronic equipment, can believe the environment
The input as the computation model is ceased, and runs the computation model, to export corresponding object brightness parameter.
Step 308, brightness processed is carried out to pending image according to object brightness parameter.
Pending image is made of several pixels, and each pixel can be made of multiple Color Channels, each
Color Channel represents a color component.For example, image can be formed, also may be used by RGB (three kinds of colors of red, green, blue) triple channel
Being made of HSV (tone, saturation degree and lightness) triple channel, can also be by CMY (blue or green, fuchsin or magenta and yellow three kinds of face
Color) triple channel form, or YUV (also known as YCrCb, be by eurovision system used by a kind of colour coding method)
Data format forms.It can mutually be changed between every kind of form, for example each pixel can be converted into RGB by yuv format
Form.
Illustrated by taking yuv format as an example, corresponding Y data can be extracted from the yuv data of two field picture, the Y data table
Brightness (Luminance or Luma), that is, grey decision-making are shown, corresponding object brightness parameter is determined according to the Y data.Frame figure
Each pixel as in corresponds to a grey decision-making, and electronic equipment can be read out for the corresponding grey decision-making of each pixel, or
Part gray-scale value therein can be read out.
For each Color Channel on each pixel, electronic equipment can be according to corresponding object brightness parameter to correspondence
The Color Channel of colour developing passage be modified.So as to fulfill the brightness processed to pending image so that the image after processing
The brightness of presentation is more accurate, is more nearly the brightness that human eye is perceived.
Above-mentioned brightness of image processing method, when carrying out shooting image, obtains beforehand through dollying head and obtains
The environmental information of the pending image arrived；And corresponding object brightness parameter is determined according to environmental information；Clapped by introducing
The environmental information for the pending image taken the photograph, so as to provide more reference informations to calculate object brightness parameter, improves meter
The accuracy of the luminance parameter calculated, and then brightness processed is carried out to pending image further according to luminance parameter, it is also corresponding to improve
To the accuracy of brightness of image processing.
In one embodiment, above-mentioned step 302 can perform before step 304, can also hold after step 306
OK, you can before pending image is obtained, you can first determine object brightness parameter, which can be by environmental information
Calculated.It can further improve the efficiency that brightness processed is carried out to pending image.For example electronic equipment can set camera
Shooting state is set to, and during dollying head, before generation shoots pending image, you can according to motion scan
To obtain real-time environmental information, and object brightness parameter is calculated according to the environmental information in real time.When receiving shooting instruction
When, pending image is generated, and brightness processed is carried out to pending image using the object brightness parameter that latest computed goes out, so that
Improve the efficiency of brightness processed.
In one embodiment, step 304 includes：Obtain beforehand through real-time frame figure obtained from dollying head
Picture；Two field picture according to generating at different moments obtains the environmental information of pending image.
Electronic equipment can generate two field picture in real time according to corresponding frame per second.Wherein, which can be the frame of fixed setting
Rate, can also be the frame per second determined according to information self-adaptings such as the brightness of current environment.For example it can be come with the frame per second of 30 frame per second
Generation two field picture in real time.During generation two field picture in real time, the camera is moved so that the frame generated at the time of different
Image is not necessarily identical.Electronic equipment can include the information in each two field picture in environmental information, be given birth at different moments by this
Into two field picture and obtain complete environmental information.Or can only extract in the two field picture generated at different moments, with giving birth to before
Into two field picture in the different image-region of image information, which is included in environmental information, so that by causing ring
Comprising spatial information where pending image in the information of border, and the spatial information does not repeat.
In one embodiment, the environmental information of pending image is obtained according to the two field picture generated at different moments, including：
The two field picture generated at different moments is contrasted, obtains the environmental information of pending image.
Electronic equipment can extract the Color Channel of the pixel in each two field picture, and to present frame and in this prior frame it
The two field picture of preceding default quantity carries out image frame comparison, identifies present frame relative to the present count before frame in this prior
The not repeat region of the two field picture picture of amount.And each not position relationship of the repeat region in whole space is further analyzed,
According to not repeat region and the position relationship, the environmental information of the pending image is formed.Wherein, which can be frame figure
The data mode of picture embodies, i.e., the environmental information can be by the above-mentioned each two field picture detected, not repeat region and the area
Domain corresponding locus in whole environment, and the panoramic picture synthesized.Scanned by dollying head to obtain in real time
Two field picture, and the environmental information of pending image is obtained according to the two field picture generated at different moments so that the environmental information of acquisition
Information content it is more.
Alternatively, electronic equipment can be according to spatial scene modeling algorithm, and during picture moving, more adjacent is front and rear
The diff area of picture between two field picture, determines camera whole according to region of the diff area in corresponding two field picture
Space coordinate in a photographed scene, the space coordinate include rectilinear coordinates and angle coordinate.According to identified space coordinate,
The coordinate position between each region and the camera in the photographed scene is would know that, so that according to the coordinate position and each
Different pictures in two field picture, obtain environmental information.Wherein, the region captured by the pending image is in the photographed scene
In.In one embodiment, which can be positioning immediately and map structuring (simultaneous
Localization and mapping, SLAM) algorithm, during electronic equipment in camera by moving, generation in real time
Corresponding two field picture, according to the two field picture and default SLAM algorithms, can construct camera under current shooting picture, residing
Spatial information in space, according to the spatial information, records environmental information as much as possible, which is used for brightness
Processing.
In one embodiment, the environmental information of pending image is obtained according to the two field picture generated at different moments, including：
Motion detection elements are called, detect the mobile data of the camera when generating each two field picture；According to mobile data from two field picture
In obtain the environmental information of pending image.
Motion detection elements are the element suitable for detection device motion state, it may include but it is not limited to gyroscope or gravity
Sensing device.The elements such as acceleration transducer.Electronic equipment can call built-in motion detection elements, calculate camera and moving
Mobile data during dynamic.Wherein, mobile data may include the one kind therein such as translational speed, displacement distance and move angle
Or a variety of combination.According to the frame per second of shooting scanning, when calculating shooting current frame image, relative to shooting reference frame, shooting
The relative movement data of head.Wherein, the relative movement data be at current time, at the time of relative to shooting reference frame, shooting
The mobile data of head.Reference frame can be two field picture when being used to record environmental information first, or be used to participate in record environment
Any one two field picture in the two field picture of information.According to the relative movement data, the picture of the two field picture of current shooting can be calculated
Image information between face information and reference frame, position relationship in space.It is to be appreciated that may between the image information
With the part repeated.According to the position relationship, can obtain being swept by camera from the two field picture generated at different moments
The whole environmental informations retouched.
The detection of mobile data is carried out by using the intrinsic motion detection elements of electronic equipment, the movement of detection can be improved
The accuracy of data, and then also improve the accuracy of the detection of environmental information.
In one embodiment, step 306 includes：The environment of pending image local environment is calculated according to environmental information
Illumination；Corresponding object brightness parameter is determined according to ambient light illumination.
Illumination refers to the luminous flux for receiving visible ray on unit area, for indicating the power and body surface area quilt of illumination
The amount of lighting level, its unit can use lux (Lux or Lx) to represent.The ambient light illumination of pending image local environment represents should
Body surface area in pending image is the amount of the degree illuminated.
Electronic equipment can be obtained in the environmental information, the Y data on each pixel, to read the brightness of each pixel
Information, ambient light illumination is calculated according to the monochrome information.Alternatively, the Y data on each pixel can be overlapped, and asked
It is average, using the average value calculated as the ambient light illumination.Object brightness parameter can be determined according to the ambient light illumination.Electronics is set
The standby correspondence that can be established between the ambient light illumination and object brightness parameter, the correspondence can by such as environmental parameter with
The table of comparisons between object brightness parameter embodies.Electronic equipment can inquire about calculated ambient light illumination institute from the table of comparisons
Corresponding luminance parameter, object brightness parameter is determined according to the luminance parameter.For example the luminance parameter that can inquire this is direct
As object brightness parameter, or the object brightness parameter can be multiplied by corresponding coefficient, obtained product is bright as target
Spend parameter.The coefficient can be fixed coefficient, can also be for according to pending image area institute occupied in the environmental information
Definite coefficient.
In the present embodiment, by computing environment illumination, object brightness parameter is calculated according to the ambient light illumination, can be improved
The efficiency that object brightness parameter calculates.
In one embodiment, as shown in figure 5, the environment that pending image local environment is calculated according to environmental information shines
Degree, including：
Step 502, panoramic picture is generated according to environmental information.
Electronic equipment can be according to the position relationship between the pixel and pixel included in the environmental information, synthesis pair
The image answered, since the environmental information is obtained from being scanned as dollying head, so the image, that is, similar of synthesis
Panoramic picture.
Step 504, the brightness of each pixel in panoramic picture is identified.
By taking the Color Channel of pixel is YUV triple channels as an example, electronic device-readable takes the Y data on each pixel,
The Y data is determined to the brightness of corresponding pixel points.Wherein, brightness that can be directly using the Y data as corresponding pixel points.When for
When RGB triple channels or other passages, the monochrome information of corresponding each pixel can be obtained, corresponding picture is determined according to the monochrome information
The brightness of vegetarian refreshments, or YUV triple channels can be converted into, according to Y therein according to the transformational relation between the YUV triple channels
Data determine the brightness of corresponding pixel points.
Step 506, the ambient light illumination of pending image local environment is calculated according to luminance meter.
Alternatively, electronic equipment can average the brightness of each pixel, using obtained average value as pair
Answer the ambient light illumination of environment.Or can be further combined with each pixel the location of in environmental information, according to residing
Location determination coefficient corresponding with the pixel, corresponding ambient light illumination is calculated according to the coefficient with brightness.For example it can incite somebody to action
The brightness is multiplied with coefficient of correspondence, and the product obtained to each pixel is summed, and is shone the sum of products as environment
Degree.
In the present embodiment, by composite group through image, environment is calculated according to the brightness of each pixel in panoramic picture
Brightness, further increases the accuracy of ambient brightness calculating.
In one embodiment, as shown in fig. 6, determining corresponding object brightness parameter according to ambient light illumination, including：
Step 602, reference brightness parameter corresponding with ambient light illumination is obtained.
Alternatively, electronic equipment can pre-set the correspondence between varying environment poisoning and reference brightness parameter, should
The correspondence table of comparisons between reference brightness parameter that can be poisoned for environment embodies.Electronic equipment can from the table of comparisons,
The reference brightness parameter that inquiry matches with the ambient light illumination.Store in the table of comparisons under varying environment illumination, suitably use
Luminance parameter, which is reference brightness parameter.Wherein, which can be sensitivity or exposure time etc.
One or more therein.
Step 604, the current brightness parameter of pending image is obtained.
Wherein, which represents presently used luminance parameter, which can be on electronic equipment
Give tacit consent to the luminance parameter used, or to shoot the set luminance parameter of custom according to user.Initially showing pending figure
When picture, electronic equipment can show pending image according to the current brightness parameter.
Step 606, object brightness parameter is calculated according to current brightness parameter and reference brightness parameter.
Electricity equipment can be further provided between object brightness parameter and current brightness parameter and reference brightness parameter
Calculated relationship, can calculate corresponding object brightness parameter according to the calculated relationship.Alternatively, object brightness parameter be in
Between current brightness parameter and reference brightness parameter so that definite object brightness parameter can take into account current goal luminance parameter and
Reference brightness parameter.
For example for the object brightness parameter corresponding weights can be set with reference brightness parameter respectively, by that will refer to
Luminance parameter and current brightness parameter are multiplied with corresponding weights, and sum, using the weighted product drawn and as
Corresponding object brightness parameter.
Mesh is calculated by traveling further into current brightness parameter, and according to the current brightness parameter and reference brightness parameter
Mark luminance parameter so that the object brightness parameter calculated more adapts to the use habit of user.
In one embodiment, as shown in Figure 7, there is provided another brightness of image processing method, this method include：
Step 702, pending image is obtained.
Alternatively, which can be the image that generates in real time under screening-mode, or can be according to default frame
Two field picture on a display screen is presented in rate in real time.
Step 704, obtain beforehand through real-time two field picture obtained from dollying head.
Electronic equipment shows the prompt message of dollying head on a display screen under screening-mode, to prompt user couple
Camera is moved.It is to be appreciated that the display mode of the prompt message and the data format of prompt message can include it is more
Kind.For example can show the similar text prompt information such as " camera please be move left and right ", or can show for representing that left and right is moved
Cardon shape or symbol etc. mark, for example can show arrow that expression moves left and right etc..Electronic equipment can obtain under screening-mode
Before getting pending image, you can cache the two field picture that the real time scan obtains.
Alternatively, camera can carry out the movement of the optional position such as left and right, upper and lower, front and rear, for example can be positioned with some state
Put carry out left-right rotation.Camera moving range is bigger, then the environmental information that correspondence can collect is more rich so that subsequent luminance
The accuracy higher of processing.For example, user can be before pending image be shot, the hand-holdable electronic equipment, to wanting
The scene of shooting carries out environmental scanning, for example the hand-holdable electronic equipment carries out 360 ° and rotates a circle, to obtain whole space
Environmental information.During electronic equipment moves, two field picture can be generated in real time according to default frame per second.
Step 706, the two field picture generated at different moments is contrasted, obtains the environmental information of pending image.
Alternatively, the two field picture of extraction environment information is participated in, can be default before the generated time of pending image
The two field picture obtained within duration, or during pending image is shot, under no termination screening-mode, and to give birth to
Into two field picture.
Each adjacent two field pictures can be carried out image frame comparison by electronic equipment, identify present frame relative to deserving
The not repeat region of the two field picture picture of default quantity before previous frame.Each not position of the repeat region in whole space of analysis
Relation is put, according to not repeat region and the position relationship, forms the environmental information of the pending image.
In one embodiment, electronic equipment can be according to default SLAM algorithms, during follow shot, according to shooting
Two field picture, construct the whole spatial information residing for the photographed scene of pending image.It is as more as possible according to the spatial information
Ground records environmental information, which is used for brightness processed.
Step 708, panoramic picture is generated according to environmental information；Identify the brightness of each pixel in panoramic picture；According to
Luminance meter calculates the ambient light illumination of pending image local environment.
Wherein, this repeat region is not also to be made of corresponding pixel, the not position relationship between repeat region
Also determine the position relationship between each pixel, according to the pixel and position relationship, the panoramic picture can be synthesized.It can manage
Xie Di, since the mode of dollying head is not necessarily regular, the panoramic picture of the synthesis is not necessarily a complete rectangle,
There may be the missing of the pixel on a certain region.
Electronic device-readable is taken in panoramic picture, the Y data of the YUV passages on each pixel, calculates the flat of the Y data
Average, the ambient light illumination using the average value as pending image local environment.It is compared to the pixel of pending image, ring
There are more reference informations so that more accurate according to the ambient light illumination that the environmental information is calculated in the information of border.
Step 710, reference brightness parameter corresponding with ambient light illumination is obtained；Obtain the present intensity ginseng of pending image
Number；Object brightness parameter is calculated according to current brightness parameter and reference brightness parameter.
Alternatively, the comparison table in electronic equipment between default ambient light illumination and reference brightness parameter, is calculating
Go out under corresponding ambient light illumination, reference brightness parameter corresponding with the ambient light illumination can be inquired about from the comparison table.At the same time
The current brightness parameter of pending image is also obtained, when the current brightness parameter is generates pending image, used brightness
Parameter.Current brightness parameter can be the luminance parameter that system default uses, or to be analyzed according to the shooting of user custom,
The acquisition parameters calculated.Electronic equipment can be directed to the current brightness parameter and reference brightness parameter sets corresponding power respectively
Value, reference brightness parameter and current brightness parameter are multiplied with corresponding weights, and are summed, and the weighting drawn is multiplied
Accumulate and be used as corresponding object brightness parameter.
Step 712, brightness processed is carried out to pending image according to object brightness parameter.
Using luminance parameter as exposure, it is respectively 0.6 to preset current brightness parameter and the corresponding value of reference brightness parameter
With 0.4, the current brightness parameter of pending image is：Current exposure degree illustrates exemplified by being 200.By the institute in panoramic picture
There are the Y passages on pixel to carry out mean value calculation, obtained ambient light illumination 2000Lux, inquires from the comparison table
The corresponding sensitivity of ambient light illumination of 2000Lux is 230.Then object brightness parameter is：Target sensitivity=200 × 0.6+230
× 0.4=212.I.e. electronic equipment can carry out brightness processed according to sensitivity for 212 pairs of pending images.
By further considering current goal luminance parameter so that excessive is unlikely to the brightness adjustment of pending image,
And it is balanced between the brightness adjustment amplitude and true brightness of pending image.
In one embodiment, as shown in Figure 8, there is provided a kind of brightness of image processing unit, the device include：
Image collection module 802, for obtaining pending image.
Environmental information generation module 804, for obtaining the ring beforehand through pending image obtained from dollying head
Border information.
Brightness processed module 806, for determining corresponding object brightness parameter according to environmental information；Joined according to object brightness
It is several that brightness processed is carried out to pending image.
In one embodiment, environmental information generation module 804 is additionally operable to obtain and is obtained beforehand through dollying head
Real-time two field picture；Two field picture according to generating at different moments obtains the environmental information of pending image.
In one embodiment, environmental information generation module 804 is additionally operable to carry out the two field picture generated at different moments pair
Than obtaining the environmental information of pending image.
In one embodiment, environmental information generation module 804 is additionally operable to call motion detection elements, detects every in generation
The mobile data of camera during a two field picture；The environmental information of pending image is obtained from two field picture according to mobile data.
In one embodiment, brightness processed module 806 is additionally operable to according to residing for environmental information calculates pending image
The ambient light illumination of environment；Corresponding object brightness parameter is determined according to ambient light illumination.
In one embodiment, brightness processed module 806 is additionally operable to generate panoramic picture according to environmental information；Identify panorama
The brightness of each pixel in image；The ambient light illumination of pending image local environment is calculated according to luminance meter.
In one embodiment, brightness processed module 806 is additionally operable to obtain reference brightness parameter corresponding with ambient light illumination；
Obtain the current brightness parameter of pending image；Object brightness ginseng is calculated according to current brightness parameter and reference brightness parameter
Number.
The division of modules is only used for for example, in other embodiments in above-mentioned brightness of image processing unit, can
Brightness of image processing unit is divided into different modules as required, with complete the whole of above-mentioned brightness of image processing unit or
Partial function.
In one embodiment, there is provided a kind of computer-readable recording medium, is stored thereon with computer program, calculates
Machine program realizes the step of brightness of image processing method that the various embodiments described above are provided when being executed by processor.
In one embodiment, there is provided a kind of electronic equipment, including memory, processor and storage are on a memory simultaneously
The computer program that can be run on a processor, processor realize the figure that the various embodiments described above are provided when performing computer program
The step of image brightness processing method.
The embodiment of the present application additionally provides a kind of computer program product.A kind of computer program product for including instruction,
When run on a computer so that computer performs the step for the brightness of image processing method that the various embodiments described above are provided
Suddenly.
The embodiment of the present application also provides a kind of electronic equipment.Above-mentioned electronic equipment includes shooting circuit, and shooting circuit can
To be realized using hardware and or software component, it may include define ISP (Image Signal Processing, at picture signal
Reason) pipeline various processing units.Fig. 9 is the schematic diagram that circuit is shot in one embodiment.As shown in figure 9, for purposes of illustration only,
Various aspects with the relevant technique for taking of the embodiment of the present application are only shown.
As shown in figure 9, shooting circuit includes ISP processors 940 and control logic device 950.The figure that imaging device 910 is caught
As data are handled by ISP processors 940 first, ISP processors 940 analyze view data can be used for determining to catch
And/or the image statistics of one or more control parameters of imaging device 910.Imaging device 910 may include there is one
Or the camera of multiple lens 912 and imaging sensor 914.Imaging sensor 914 may include colour filter array (such as Bayer
Filter), imaging sensor 914 can obtain the luminous intensity and wavelength information caught with each imaging pixel of imaging sensor 914,
And provide the one group of raw image data that can be handled by ISP processors 940.Sensor 920 (such as gyroscope) can be based on sensor
The parameter (such as stabilization parameter) of the shooting of collection is supplied to ISP processors 940 by 920 interface types.920 interface of sensor can be with
Utilize SMIA (Standard Mobile Imaging Architecture, Standard Mobile Imager framework) interface, other serial
Or the combination of parallel camera interface or above-mentioned interface.
In addition, raw image data can be also sent to sensor 920 by imaging sensor 914, sensor 920 can be based on passing
920 interface type of sensor is supplied to ISP processors 940, or sensor 920 to deposit raw image data raw image data
Store up in video memory 930.
ISP processors 940 handle raw image data pixel by pixel in various formats.For example, each image pixel can
Bit depth with 9,10,12 or 14 bits, ISP processors 940 can carry out raw image data one or more shooting behaviour
Make, statistical information of the collection on view data.Wherein, shooting operation can be carried out by identical or different bit depth precision.
ISP processors 940 can also receive view data from video memory 930.For example, 920 interface of sensor will be original
View data is sent to video memory 930, and the raw image data in video memory 930 is available to ISP processors 940
It is for processing.Video memory 930 can be independent special in the part of storage arrangement, storage device or electronic equipment
With memory, and it may include DMA (Direct Memory Access, direct direct memory access (DMA)) feature.
When receiving from 914 interface of imaging sensor or from 920 interface of sensor or from video memory 930
During raw image data, ISP processors 940 can carry out one or more shooting operations, such as time-domain filtering.Picture number after processing
According to can be transmitted to video memory 930, to carry out other processing before shown.ISP processors 940 can also be from image
Memory 930 receives processing data, and processing data are carried out with the picture number in original domain and in RGB and YCbCr color spaces
According to processing.View data after processing may be output to display 980, so that user watches and/or by graphics engine or GPU
(Graphics Processing Unit, graphics processor) is further handled.In addition, the output of ISP processors 940 can also be sent out
Video memory 930 is given, and display 980 can read view data from video memory 930.In one embodiment, scheme
As memory 930 can be configured as realizing one or more frame buffers.In addition, the output of ISP processors 940 can be transmitted to volume
Code device/decoder 970, so as to encoding/decoding image data.The view data of coding can be saved, and be shown in display
Decompressed before in 980 equipment.
The step of processing view data of ISP processors 940, includes：To view data carry out VFE (Video Front End,
Video front) handle and CPP (Camera Post Processing, camera post processing) processing.At the VFE of view data
Reason may include correct view data contrast or brightness, modification record in a digital manner illumination conditions data, to picture number
According to compensate processing (such as white balance, automatic growth control, γ correction etc.), to view data be filtered processing etc..To figure
As the CPP processing of data may include to zoom in and out image, preview frame and record frame are provided to each path.Wherein, CPP can make
Preview frame and record frame are handled with different codecs.View data after the processing of ISP processors 940 can be transmitted to U.S. face
Module 960, to carry out U.S. face processing to image before shown.U.S. face module 960 can wrap the face processing of view data U.S.
Include：Whitening, nti-freckle, mill skin, thin face, anti-acne, increase eyes etc..Wherein, U.S. face module 960 can be CPU in mobile terminal
(Central Processing Unit, central processing unit), GPU or coprocessor etc..Data after the U.S. processing of face module 960
It can be transmitted to encoder/decoder 970, so as to encoding/decoding image data.The view data of coding can be saved, and aobvious
Decompressed before being shown in 980 equipment of display.Wherein, U.S. face module 960 may be additionally located at encoder/decoder 970 and display
Between device 980, i.e., U.S. face module carries out the image being imaged U.S. face processing.Above-mentioned encoder/decoder 970 can be mobile whole
CPU, GPU or coprocessor etc. in end.
The definite statistics of ISP processors 940, which can be transmitted, gives control logic device Unit 950.For example, statistics can wrap
Include the image sensings such as automatic exposure, automatic white balance, automatic focusing, flicker detection, black level compensation, 912 shadow correction of lens
914 statistical information of device.Control logic device 950 may include the processor and/or micro-control for performing one or more routines (such as firmware)
Device processed, one or more routines according to the statistics of reception, can determine control parameter and the ISP processing of imaging device 910
The control parameter of device 940.For example, the control parameter of imaging device 910 may include 920 control parameter of sensor (such as gain, expose
The time of integration of photocontrol), camera flash control parameter, 912 control parameter of lens (such as focus on or zoom focal length) or
The combination of these parameters.ISP control parameters may include to be used for automatic white balance and color adjustment (for example, during RGB processing)
Gain level and color correction matrix, and 912 shadow correction parameter of lens.
Brightness of image processing method as above can be realized with technique for taking in Fig. 9.
Any reference to memory, storage, database or other media used in this application may include non-volatile
And/or volatile memory.Suitable nonvolatile memory may include read-only storage (ROM), programming ROM (PROM),
Electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include arbitrary access
Memory (RAM), it is used as external cache.By way of illustration and not limitation, RAM is available in many forms, such as
It is static RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDR SDRAM), enhanced
SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM).
Embodiment described above only expresses the several embodiments of the application, its description is more specific and detailed, but simultaneously
Therefore the limitation to the application the scope of the claims cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, on the premise of the application design is not departed from, various modifications and improvements can be made, these belong to the guarantor of the application
Protect scope.Therefore, the protection domain of the application patent should be determined by the appended claims.
Claims (10)
1. a kind of brightness of image processing method, including：
Obtain pending image；
Obtain the environmental information beforehand through the pending image obtained from dollying head；
Corresponding object brightness parameter is determined according to the environmental information；
Brightness processed is carried out to the pending image according to the object brightness parameter.
2. according to the method described in claim 1, it is characterized in that, the acquisition is beforehand through institute obtained from dollying head
The environmental information of pending image is stated, including：
Obtain beforehand through real-time two field picture obtained from dollying head；
Two field picture according to generating at different moments obtains the environmental information of the pending image.
3. according to the method described in claim 2, it is characterized in that, the two field picture that the basis generates at different moments obtain it is described
The environmental information of pending image, including：
The two field picture generated at different moments is contrasted, obtains the environmental information of the pending image.
4. according to the method described in claim 2, it is characterized in that, the two field picture that the basis generates at different moments obtain it is described
The environmental information of pending image, including：
Motion detection elements are called, detect the mobile data of the camera when generating each two field picture；
The environmental information of the pending image is obtained from the two field picture according to the mobile data.
5. according to the method described in claim 1, it is characterized in that, described determine that corresponding target is bright according to the environmental information
Parameter is spent, including：
The ambient light illumination of the pending image local environment is calculated according to the environmental information；
Corresponding object brightness parameter is determined according to the ambient light illumination.
6. according to the method described in claim 5, it is characterized in that, it is described calculated according to the environmental information it is described pending
The ambient light illumination of image local environment, including：
Panoramic picture is generated according to the environmental information；
Identify the brightness of each pixel in the panoramic picture；
The ambient light illumination of the pending image local environment is calculated according to the luminance meter.
7. according to the method described in claim 5, it is characterized in that, described determine that corresponding target is bright according to the ambient light illumination
Parameter is spent, including：
Obtain reference brightness parameter corresponding with the ambient light illumination；
Obtain the current brightness parameter of the pending image；
Object brightness parameter is calculated according to the current brightness parameter and the reference brightness parameter.
8. a kind of brightness of image processing unit, it is characterised in that described device includes：
Image collection module, for obtaining pending image
Environmental information generation module, the environment for obtaining beforehand through the pending image obtained from dollying head are believed
Breath；
Brightness processed module, for determining corresponding object brightness parameter according to the environmental information；According to the object brightness
Parameter carries out brightness processed to the pending image.
9. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the computer program quilt
The step of processor realizes method any one of claim 1 to 7 when performing.
10. a kind of electronic equipment, including memory, processor and storage are on a memory and the calculating that can run on a processor
Machine program, it is characterised in that the processor is realized any one of claim 1 to 7 when performing the computer program
The step of method.
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| CN201711213031.5A CN108012078B (en) | 2017-11-28 | 2017-11-28 | Image brightness processing method and device, storage medium and electronic equipment |
| PCT/CN2018/117299 WO2019105305A1 (en) | 2017-11-28 | 2018-11-23 | Image brightness processing method, computer readable storage medium and electronic device |
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| CN201711213031.5A CN108012078B (en) | 2017-11-28 | 2017-11-28 | Image brightness processing method and device, storage medium and electronic equipment |
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| CN108012078B (en) | 2020-03-27 |
| WO2019105305A1 (en) | 2019-06-06 |
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