CN109525783A - A kind of exposure image pickup method, terminal and computer readable storage medium - Google Patents
A kind of exposure image pickup method, terminal and computer readable storage medium Download PDFInfo
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- CN109525783A CN109525783A CN201811595550.7A CN201811595550A CN109525783A CN 109525783 A CN109525783 A CN 109525783A CN 201811595550 A CN201811595550 A CN 201811595550A CN 109525783 A CN109525783 A CN 109525783A
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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
- H04N23/60—Control of cameras or camera modules
- H04N23/61—Control of cameras or camera modules based on recognised objects
- H04N23/611—Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
-
- 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
- H04N23/71—Circuitry for evaluating the brightness variation
-
- 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
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
-
- 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
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
-
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/265—Mixing
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Abstract
The invention discloses a kind of exposure image pickup method, terminal and computer readable storage medium, this method includes whether detection terminal currently under a preset scenario shoots reference object；Shooting is exposed to the first predeterminable area and obtains the first shooting image in pre flashing of flash lamp if so, opening flash lamp；In the main sudden strain of a muscle of flash lamp, shooting is exposed to the second predeterminable area and obtains the second shooting image；First shooting image and the second shooting image co-registration are obtained into target shooting image, solve that existing that there are larger differences is big to certain parts of shooting image reflective due to flash lighting, and the picture luminance for taking flash lamp is uneven, the problem of influencing user experience, the invention also discloses a kind of terminal and computer readable storage mediums, by implementing above scheme, when realizing exposure shooting, the quality for improving shooting image, ensure that the experience sense and satisfaction of user.
Description
Technical field
The present invention relates to picture shooting technical fields, more specifically to a kind of exposure image pickup method, terminal and calculating
Machine readable storage medium storing program for executing.
Background technique
With the development of various terminals camera sensor devices, the effect of taking pictures under half-light can increasingly embody sensor devices
Technical advantage.And flash lamp, as the important supplementary lighting module taken pictures under dim light, status is also more important.However, flash lamp
There are larger differences for certain parts reflective of the light filling to shooting image, are difficult to keep the depth of exposure of certain parts all proper when taking pictures
To benefit: for example, if the close shot brightness in shooting figure is normal, then distant view will appear black situation, and if distant view gamma correction
Often, close shot just will appear overexposure situation, finally can all influence imaging effect, influence user experience.
Summary of the invention
The technical problem to be solved in the present invention is that existing since flash lighting is to the anti-of the certain parts for shooting image
The problem of that there are larger differences is big for light, and the picture luminance for taking flash lamp is uneven, influences user experience, for the technology
Problem provides a kind of exposure image pickup method, terminal and computer readable storage medium.
In order to solve the above technical problems, the present invention provides a kind of exposure image pickup method, the exposure image pickup method includes:
Whether detection terminal currently under a preset scenario shoots reference object；
Shooting is exposed to the first predeterminable area and obtains first in the pre flashing of flash lamp if so, opening flash lamp
Shoot image；
In the main sudden strain of a muscle of the flash lamp, shooting is exposed to the second predeterminable area and obtains the second shooting image；
The first shooting image and the second shooting image co-registration are obtained into target shooting image.
Optionally, described first is default including close shot region, and second predeterminable area includes distant view region.
Optionally, whether the detection terminal currently under a preset scenario shoots reference object, comprising:
Whether detection terminal currently shoots portrait under backlight scene or night scene scene.
Optionally, first predeterminable area includes portrait facial area, described to be exposed bat to the first predeterminable area
Take the photograph to obtain the first shooting image include:
Judge whether the region area of the portrait facial area is greater than preset area threshold value；
If not, detect the portrait facial area central point brightness value and/or the flash lamp and portrait face away from
From value, shooting is exposed to the portrait facial area according to the brightness value and/or distance value and obtains the first shooting image.
Optionally, the region area of the portrait facial area is greater than preset area threshold value, described to the first predeterminable area
It is exposed shooting and obtains the first shooting image and include:
The average brightness value for detecting the portrait facial area, according to the average brightness value to the portrait facial area
It is exposed shooting and obtains the first shooting image.
Optionally, second predeterminable area includes the background area in addition to the portrait facial area, described to second
Predeterminable area, which is exposed shooting and obtains the second shooting image, includes:
The average brightness value for obtaining the background area, according to the average brightness value of the background area to the background area
Domain is exposed shooting and obtains the second shooting image.
Optionally, the average brightness value for obtaining the background area includes:
The background area is evenly dividing as unit of preset standard region, according to the bright of each preset standard region
Angle value determines the average brightness value；
Or,
The image information of the background area is identified, the corresponding brightness value of each image information classification is obtained；
The average brightness value is determined according to the corresponding brightness value of each image information classification.
It is optionally, described that the first shooting image and the second shooting image co-registration are obtained into target shooting image,
Include:
Extract the corresponding image of the first predeterminable area in the first shooting image；
The image of extraction is synthesized in the second shooting image using Image Fusion, obtains target shooting figure
Picture.
Further, the present invention also provides a kind of terminal, the terminal includes processor, memory and communication bus；
The communication bus is for realizing the connection communication between the processor and the memory；
The processor is as described above to realize for executing one or more program stored in the memory
Expose the step in image pickup method.
Further, the present invention also provides a kind of computer readable storage medium, the computer readable storage mediums
It is stored with one or more program, one or more of programs can be executed by one or more processor, to realize
Step in exposure image pickup method as described above.
Beneficial effect
The present invention provides a kind of exposure image pickup method, terminal and computer readable storage medium, for existing due to flash of light
That there are larger differences is big to certain parts of shooting image reflective for lamp light filling, and the picture luminance for taking flash lamp is uneven
It is even, the problem of influencing user experience, by detecting whether terminal currently under a preset scenario shoots reference object；Such as
It is to open flash lamp to be exposed shooting in pre flashing of flash lamp to the first predeterminable area and obtain the first shooting image；It is dodging
When the main sudden strain of a muscle of light lamp, shooting is exposed to the second predeterminable area and obtains the second shooting image；By the first shooting image and second count
It takes the photograph image co-registration and obtains target shooting image.I.e. respectively in preflashing and main sudden strain of a muscle, in reference object the first predeterminable area and
Second predeterminable area is exposed shooting, guarantees that the first predeterminable area and the exposure of the second predeterminable area are normal, and then by first count
It takes the photograph image and the second shooting image is merged, obtain the normal image of exposure value, when realizing exposure shooting, improve shooting figure
The quality of picture ensure that the experience sense and satisfaction of user.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
The hardware structural diagram of Fig. 1 each embodiment one optional mobile terminal to realize the present invention；
Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1；
Fig. 3 is the exposure image pickup method basic flow chart that first embodiment of the invention provides；
Fig. 4 is the schematic diagram of the brightness value for the first predeterminable area that first embodiment of the invention provides；
Fig. 5 is the schematic diagram of the brightness value for the first predeterminable area of another kind that first embodiment of the invention provides；
Fig. 6 is the schematic diagram of the brightness value for the second predeterminable area that first embodiment of the invention provides；
Fig. 7 is the schematic diagram of the brightness value for the second predeterminable area of another kind that first embodiment of the invention provides；
Fig. 8 is the schematic diagram that the target that first embodiment of the invention provides shoots image；
Fig. 9 is the exposure image pickup method basic flow chart that second embodiment of the invention provides；
Figure 10 is the structural schematic diagram for the terminal that third embodiment of the invention provides.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
In subsequent description, it is only using the suffix for indicating such as " module ", " component " or " unit " of element
Be conducive to explanation of the invention, itself there is no a specific meaning.Therefore, " module ", " component " or " unit " can mix
Ground uses.
Terminal can be implemented in a variety of manners.For example, terminal described in the present invention may include such as mobile phone, plate
Computer, laptop, palm PC, personal digital assistant (Personal Digital Assistant, PDA), portable
Media player (Portable Media Player, PMP), navigation device, wearable device, Intelligent bracelet, pedometer etc. move
The fixed terminals such as dynamic terminal, and number TV, desktop computer.
It will be illustrated by taking mobile terminal as an example in subsequent descriptions, it will be appreciated by those skilled in the art that in addition to special
Except element for moving purpose, the construction of embodiment according to the present invention can also apply to the terminal of fixed type.
Referring to Fig. 1, a kind of hardware structural diagram of its mobile terminal of each embodiment to realize the present invention, the shifting
Dynamic terminal 100 may include: RF (Radio Frequency, radio frequency) unit 101, WiFi module 102, audio output unit
103, A/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit
108, the components such as memory 109, processor 110 and power supply 111.It will be understood by those skilled in the art that shown in Fig. 1
Mobile terminal structure does not constitute the restriction to mobile terminal, and mobile terminal may include components more more or fewer than diagram,
Perhaps certain components or different component layouts are combined.
It is specifically introduced below with reference to all parts of the Fig. 1 to mobile terminal:
Radio frequency unit 101 can be used for receiving and sending messages or communication process in, signal sends and receivees, specifically, by base station
Downlink information receive after, to processor 110 handle；In addition, the data of uplink are sent to base station.In general, radio frequency unit 101
Including but not limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, penetrating
Frequency unit 101 can also be communicated with network and other equipment by wireless communication.Any communication can be used in above-mentioned wireless communication
Standard or agreement, including but not limited to GSM (Global System of Mobile communication, global system for mobile telecommunications
System), GPRS (General Packet Radio Service, general packet radio service), CDMA2000 (Code
Division Multiple Access 2000, CDMA 2000), WCDMA (Wideband Code Division
Multiple Access, wideband code division multiple access), TD-SCDMA (Time Division-Synchronous Code
Division Multiple Access, TD SDMA), FDD-LTE (Frequency Division
Duplexing-Long Term Evolution, frequency division duplex long term evolution) and TDD-LTE (Time Division
Duplexing-Long Term Evolution, time division duplex long term evolution) etc..
WiFi belongs to short range wireless transmission technology, and mobile terminal can help user to receive and dispatch electricity by WiFi module 102
Sub- mail, browsing webpage and access streaming video etc., it provides wireless broadband internet access for user.Although Fig. 1 shows
Go out WiFi module 102, but it is understood that, and it is not belonging to must be configured into for mobile terminal, it completely can be according to need
It to omit within the scope of not changing the essence of the invention.
Audio output unit 103 can be in call signal reception pattern, call mode, record mould in mobile terminal 100
When under the isotypes such as formula, speech recognition mode, broadcast reception mode, by radio frequency unit 101 or WiFi module 102 it is received or
The audio data stored in memory 109 is converted into audio signal and exports to be sound.Moreover, audio output unit 103
Audio output relevant to the specific function that mobile terminal 100 executes can also be provided (for example, call signal receives sound, disappears
Breath receives sound etc.).Audio output unit 103 may include loudspeaker, buzzer etc..
A/V input unit 104 is for receiving audio or video signal.A/V input unit 104 may include graphics processor
(Graphics Processing Unit, GPU) 1041 and microphone 1042, graphics processor 1041 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 106.Through graphics processor 1041, treated that picture frame can be deposited
Storage is sent in memory 109 (or other storage mediums) or via radio frequency unit 101 or WiFi module 102.Mike
Wind 1042 can connect in telephone calling model, logging mode, speech recognition mode etc. operational mode via microphone 1042
Quiet down sound (audio data), and can be audio data by such acoustic processing.Audio that treated (voice) data can
To be converted to the format output that can be sent to mobile communication base station via radio frequency unit 101 in the case where telephone calling model.
Microphone 1042 can be implemented various types of noises elimination (or inhibition) algorithms and send and receive sound to eliminate (or inhibition)
The noise generated during frequency signal or interference.
Mobile terminal 100 further includes at least one sensor 105, 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 1061, and proximity sensor can close when mobile terminal 100 is moved in one's ear
Display panel 1061 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 the application of mobile phone posture
(such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, percussion) etc.；
The fingerprint sensor that can also configure as mobile phone, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer,
The other sensors such as hygrometer, thermometer, infrared sensor, details are not described herein.
Display unit 106 is for showing information input by user or being supplied to the information of user.Display unit 106 can wrap
Display panel 1061 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 1061.
User input unit 107 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 107 may include touch panel 1071 with
And other input equipments 1072.Touch panel 1071, 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 1071 or in touch panel 1071
Neighbouring operation), and corresponding attachment device is driven according to preset formula.Touch panel 1071 may include touch detection
Two parts of device and touch controller.Wherein, the touch orientation of touch detecting apparatus detection user, and detect touch operation band
The signal come, transmits a signal to touch controller；Touch controller receives touch information from touch detecting apparatus, and by it
It is converted into contact coordinate, then gives processor 110, and order that processor 110 is sent can be received and executed.In addition, can
To realize touch panel 1071 using multiple types such as resistance-type, condenser type, infrared ray and surface acoustic waves.In addition to touch panel
1071, user input unit 107 can also include other input equipments 1072.Specifically, other input equipments 1072 can wrap
It includes but is not limited in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, operating stick etc.
It is one or more, specifically herein without limitation.
Further, touch panel 1071 can cover display panel 1061, when touch panel 1071 detect on it or
After neighbouring touch operation, processor 110 is sent to determine the type of touch event, is followed by subsequent processing device 110 according to touch thing
The type of part provides corresponding visual output on display panel 1061.Although in Fig. 1, touch panel 1071 and display panel
1061 be the function that outputs and inputs of realizing mobile terminal as two independent components, but in certain embodiments, it can
The function that outputs and inputs of mobile terminal is realized so that touch panel 1071 and display panel 1061 is integrated, is not done herein specifically
It limits.
Interface unit 108 be used as at least one external device (ED) connect with mobile terminal 100 can by interface.For example,
External device (ED) may include wired or wireless headphone port, external power supply (or battery charger) port, wired or nothing
Line data port, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Interface unit 108 can be used for receiving the input from external device (ED) (for example, number
It is believed that breath, electric power etc.) and the input received is transferred to one or more elements in mobile terminal 100 or can be with
For transmitting data between mobile terminal 100 and external device (ED).
Memory 109 can be used for storing software program and various data.Memory 109 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 109 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 110 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 109, and calls and is stored in storage
Data in device 109 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.Place
Managing device 110 may include one or more processing units；Preferably, processor 110 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 110.
Mobile terminal 100 can also include the power supply 111 (such as battery) powered to all parts, it is preferred that power supply 111
Can be logically contiguous by power-supply management system and processor 110, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
Although Fig. 1 is not shown, mobile terminal 100 can also be including bluetooth module etc., and details are not described herein.
Embodiment to facilitate the understanding of the present invention, the communications network system that mobile terminal of the invention is based below into
Row description.
Referring to Fig. 2, Fig. 2 is a kind of communications network system architecture diagram provided in an embodiment of the present invention, the communication network system
System is the LTE system of universal mobile communications technology, which includes UE (User Equipment, the use of successively communication connection
Family equipment) (the land Evolved UMTS Terrestrial Radio Access Network, evolved UMTS 201, E-UTRAN
Ground wireless access network) 202, EPC (Evolved Packet Core, evolved packet-based core networks) 203 and operator IP operation
204。
Specifically, UE201 can be above-mentioned terminal 100, and details are not described herein again.
E-UTRAN202 includes eNodeB2021 and other eNodeB2022 etc..Wherein, eNodeB2021 can be by returning
Journey (backhaul) (such as X2 interface) is connect with other eNodeB2022, and eNodeB2021 is connected to EPC203,
ENodeB2021 can provide the access of UE201 to EPC203.
EPC203 may include MME (Mobility Management Entity, mobility management entity) 2031, HSS
(Home Subscriber Server, home subscriber server) 2032, other MME2033, SGW (Serving Gate Way,
Gateway) 2034, PGW (PDN Gate Way, grouped data network gateway) 2035 and PCRF (Policy and
Charging Rules Function, policy and rate functional entity) 2036 etc..Wherein, MME2031 be processing UE201 and
The control node of signaling, provides carrying and connection management between EPC203.HSS2032 is all to manage for providing some registers
Such as the function of home location register (not shown) etc, and preserves some related service features, data rates etc. and use
The dedicated information in family.All customer data can be sent by SGW2034, and PGW2035 can provide the IP of UE 201
Address distribution and other functions, PCRF2036 are strategy and the charging control strategic decision-making of business data flow and IP bearing resource
Point, it selects and provides available strategy and charging control decision with charge execution function unit (not shown) for strategy.
IP operation 204 may include internet, Intranet, IMS (IP Multimedia Subsystem, IP multimedia
System) or other IP operations etc..
Although above-mentioned be described by taking LTE system as an example, those skilled in the art should know the present invention is not only
Suitable for LTE system, be readily applicable to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA with
And the following new network system etc., herein without limitation.
Based on above-mentioned mobile terminal hardware configuration and communications network system, each embodiment of the method for the present invention is proposed.
First embodiment
In order to solve it is existing due to flash lighting, to certain parts of shooting image reflective, that there are larger differences is big, and
The problem of picture luminance for taking flash lamp is uneven, influences user experience, the present embodiment provides a kind of exposure image pickup method,
As shown in figure 3, Fig. 3 is exposure image pickup method basic flow chart provided in this embodiment, which includes:
Whether S301, detection terminal currently under a preset scenario shoot reference object, if so, turn S302, if not,
Turn S301.
It is understood that the terminal in the present embodiment includes at least one flash lamp, the quantity of flash lamp, type and
Position is herein without limiting.When user, which opens camera, to be shot, whether detection terminal is currently right under a preset scenario
Reference object is shot, and the front camera that can be terminal shoots reference object, then at least one flash lamp
Positioned at the same face of front camera, it is also possible to rear camera and is shot, then at least one flash lamp is taken the photograph positioned at postposition
As the same face of head.
In the present embodiment, default scene includes but is not limited to the low scene of light, such as backlight scene or night scene scene,
Reference object includes but is not limited to animal, portrait, landscape etc., and whether the present embodiment is to detect terminal currently at backlight scene or night
It is illustrated for being shot under scape scene to portrait.
S302, unlatching flash lamp are exposed shooting to the first predeterminable area and obtain the first shooting in pre flashing of flash lamp
Image.
It should be understood that being generally divided into preflashing and main sudden strain of a muscle two parts when terminal is taken pictures using flash lamp at present.Preflashing rank
Section calculates the exposure value AE of the survey optical target (focal object being taken) under the LED luminance of preflashing.When main sudden strain of a muscle, according to it is pre-
It dodges direct luminance difference and does AE value when difference immediately arrives at main sudden strain of a muscle.Based on above-mentioned taking photos by using flashlights, in the present embodiment, terminal
When opening flash lamp and carrying out preflashing, shooting also is exposed to the first predeterminable area and obtains the first shooting image, this is first default
Region can be the close shot region determined according to content of shooting, be also possible to instruct determining first preset areas according to the user's choice
Domain.For example, before pre flashing of flash lamp, user's stroke sliding trace on a display screen then will be using the sliding trace as center line
Square determine the first predeterminable area, when flash lamp is preset, using first predeterminable area as focus, to first preset areas
Domain is exposed shooting and obtains the first shooting image, certainly in some embodiments, which can be shown to
It saves, can not also show after user's confirmation, directly save the first shooting image.
When using terminal camera shoots portrait, need to improve face using flash lamp under a preset scenario bright
Degree avoids the too low imaging effect difference of facial brightness from improving brightness, therefore, when terminal currently under a preset scenario claps portrait
When taking the photograph, which includes portrait facial area, that is, automatically determining the first predeterminable area includes portrait facial area,
In middle the present embodiment, when default shoots portrait, there are portrait facial areas for the portrait；The people refers to as facial area
Including facial areas such as portrait eyes, nose, mouthes, then shooting is exposed to the first predeterminable area at this time and obtains the first shooting
Image includes the brightness value for detecting portrait facial area, is exposed shooting to portrait facial area according to the brightness value and obtains the
One shooting image.Optionally, judge whether the region area of portrait surface area is greater than preset area region, the preset area threshold
Value can be customized by the user setting, can also be arranged by terminal intelligent, can also be adjusted flexibly according to actual needs, example
Such as preset area is the 1/4 of display screen display area；When the region area in character face region is less than preset area threshold value,
Then show portrait at a distance from camera farther out, each section (eyes, nose, mouth each section) is bright in portrait facial area at this time
Angle value is about the same, it is determined that the brightness value of the people's image planes portion regional center point, according to the bright of character face's regional center point
Angle value is exposed shooting to portrait facial area；For example, as shown in figure 4, the people as facial area 401 central point be 402,
The exposure value of flash lamp is then obtained according to the algorithm of exposure value according to the brightness value of the central point 402, and then controls shooting.It is optional
, due to portrait at a distance from camera farther out, in order to which guarantor's image planes portion regional exposure is normal, in the area of portrait facial area
When domain area is less than preset area region, flash lamp and the distance value of character face can also be detected, according to portrait center of face
The brightness value and the distance value of point are exposed shooting to portrait facial area.
When the region face of portrait facial area is greater than preset area threshold value, due to each section in character face region
(eyes, nose, mouth each section) is different from the positional relationship of external light source, such as half border region of a left side in character face region is
Backlight area, half border region of the right side in character face region are the area Ying Guang；Then the people as the brightness value of each section in facial area it is different,
Can determine the average brightness value of portrait facial area according to the brightness value of each section at this time, so according to the average brightness value into
Row exposure shooting；Such as shown in figure 5, the people as facial area includes eye areas 501, nasal area 502, mouth region
503 and forehead region 504, then according to the acquisition eye areas 501, nasal area 502, mouth region 503 and forehead region 504
Brightness value, calculate the average brightness value of portrait facial area, and then the exposure value of flash lamp obtained according to the algorithm of exposure value,
Control shooting.
Certainly, in other embodiments, when terminal shoots portrait, which is not present portrait facial area
When, then it instructs according to the user's choice and determines the first predeterminable area, or determine that the first predeterminable area is the body part of portrait
Region.
S303, in the main sudden strain of a muscle of flash lamp, shooting is exposed to the second predeterminable area and obtains the second shooting image.
In the present embodiment, in the main sudden strain of a muscle of flash lamp, shooting is exposed to the second predeterminable area, second predeterminable area
Including other regions in addition to the first predeterminable area, when terminal currently under a preset scenario shoots portrait, this second
Predeterminable area includes the background area in addition to character face region, that is, automatically determines other regions in addition to portrait facial area,
Other regions are background area, the average brightness value in called region are obtained at this time, according to the average brightness value of the background area
Shooting is exposed to background area and obtains the second shooting image, it is of course possible to which the second shooting image is shown to user's confirmation
After save, can not also show, directly save this second shooting image.
It is understood that since background area is located at each position of display screen display area, because the background area is each
The brightness value of subregion is different, and the average brightness value for obtaining background area includes as unit of preset standard region to background area
It is evenly dividing, average brightness value is determined according to the brightness value in each preset standard region.Wherein the preset standard region can be with
It is adjusted flexibly according to demand, such as the preset standard region includes with the standard square of pre-set dimension size, standard round
The regular figures such as shape, such as with side length be the square area of 1cm, background area is evenly dividing, and then obtain preset standard
The brightness value of regional center point, and then calculate the average brightness value of the background area.It such as shown in fig. 6, is 3cm's with radius
For standard square region 601, background area (other regions in addition to portrait facial area) are evenly dividing as 11 sons
Region 601 obtains the Strehl ratio value of 11 sub-regions 601, calculates the average brightness value of background area.
In some embodiments, the average brightness value for obtaining background area includes knowing to the image of the background area
Not, the corresponding brightness value of each image information classification is obtained, average brightness is determined according to the corresponding brightness value of each image information classification
Value.Wherein image information refers to the content information that background area includes, such as shown in fig. 7, the background area includes tree, room
Son, day, the body part of portrait then obtain tree, house, vehicle, the brightness value of the body part central point of portrait, and then calculate back
The average brightness value of scene area.
S304, the first shooting image and the second shooting image co-registration are obtained into target shooting image.
In the present embodiment, the first shooting icon and the second shooting image co-registration are obtained target shooting image includes by the
The corresponding image of the first predeterminable area image corresponding with the second predeterminable area in the second shooting image in one shooting image
It is merged to obtain target shooting image.Such as the corresponding image of the first predeterminable area in extraction the first shooting image, it uses
The image of extraction is synthesized in the second shooting image by Image Fusion, obtains target shooting image；Such as shown in figure 8,
The corresponding image 801 of first shooting the first predeterminable area of image is synthesized in the second shooting image 802, target shooting figure is obtained
As 803.It is also possible to extract the corresponding image of the second predeterminable area in the second shooting image, will be mentioned using Image Fusion
The image taken is synthesized in the first shooting image, obtains target shooting image.It is understood that Image Fusion is existing
It calculates, this is no longer going to repeat them, and each section exposes normal image when obtained target shoots image.
A kind of exposure image pickup method is present embodiments provided, flash lamp is opened using photo terminal in user and is clapped against personage
According to photo terminal opens flash lamp and carries out preflashing, and algorithm is exposed according to human face's brightness after detecting face, guarantees face
Exposure is normal, while saving the first shooting image；After the completion of preflashing, flash lamp enters the main sudden strain of a muscle stage, and detection background luminance carries out
Exposure guarantees that background exposure is normal, while saving photo second and shooting image, and system takes the first shooting image and the second shooting
After image, face part being detected in the first shooting image and is extracted, the face part extracted from the first shooting image is adopted
It is blended into the normal second shooting image of background exposure with Image Fusion；Human face and back are obtained after the completion of blending algorithm
Scape exposes normal target shooting image and improves the quality of shooting image when realizing exposure shooting, ensure that the body of user
Test sense and satisfaction.
Second embodiment
In order to better understand the present invention, the present embodiment is illustrated with a more specific example, it is assumed that user adopts
Shooting shooting is carried out with the rear camera of terminal, as shown in figure 9, Fig. 9 is the exposure shooting that second embodiment of the invention provides
Method flow diagram, the exposure image pickup method include:
Whether S901, detection terminal currently under a preset scenario shoot portrait, if so, turning S902, if not, turning
S901。
The present embodiment for detecting terminal and currently whether be shot under backlight scene or night scene scene to portrait into
Row explanation, which includes portrait facial area, and the people refers to including the faces such as portrait eyes, nose, mouth as facial area
Portion region.
S902, flash lamp is opened, judges whether the region area of portrait facial area is greater than preset area threshold value, if not,
Turn S903, if so, turning S904.
In the present embodiment, by judging that the size of the region area of portrait facial area determines terminal camera and portrait
Distance, such as judge whether the people is greater than the 1/4 of display screen display area as the region area of facial area, work as character face
When the region area in region is less than preset area threshold value, then show portrait at a distance from camera farther out, portrait facial area at this time
Each section (eyes, nose, mouth each section) brightness value is about the same in domain；When the region area in character face region is greater than in advance
If when area threshold, since the position of each section (eyes, nose, mouth each section) in character face region and external light source is closed
System is different, then brightness value difference of the people as each section in facial area.
S903, in pre flashing of flash lamp, detect character face region average brightness value, according to average brightness value to personage
Facial area is exposed shooting and obtains the first shooting image.
When portrait facial area is greater than preset area threshold value, the people includes eye areas as facial area, nasal area,
Mouth region and forehead region, then according to the acquisition eye areas, nasal area, mouth region and forehead region brightness value,
The average brightness value of portrait facial area is calculated, and then the exposure value of flash lamp is obtained according to the algorithm of exposure value, guarantees portrait
Facial area exposure is normal, and control shooting obtains the first shooting image, which is shown to user, then receive
When the confirmation instruction of user, terminal saves the first shooting image；It is instructed when not receiving confirmation within a preset period of time
When, shooting is exposed to portrait facial area again, the exposure value of flash lamp is exposed according to adjustment instruction before at this time
It is adjusted on the basis of light value.
S904, in pre flashing of flash lamp, detect brightness value and flash lamp and the character face of character face's regional center point
Distance value, shooting is exposed to character face region according to brightness value and/or distance value and obtains the first shooting image.
In the present embodiment, character face's regional center point nose then obtains the brightness value of nose, and obtains flash lamp
With the distance value of character face, the exposure value in character face region is calculated according to the software algorithm of exposure value, and then is shot and obtained
First shooting image.It is understood that obtaining the brightness value of portrait facial area can be according to each picture of portrait facial area
The brightness value of vegetarian refreshments obtains, and the distance value of flash lamp and character face can be according to portrait facial areas in display screen display area
Display size determine.
S905, background area is evenly dividing as unit of preset standard region, according to each preset standard region
Brightness value determines average brightness value.
It is the square area of 2cm with side length, background area is evenly dividing, and then obtains preset standard regional center point
Brightness value, and then calculate the average brightness value of the background area.
S906, in the main sudden strain of a muscle of flash lamp, shooting is exposed to background area according to average brightness value and obtains the second shooting
Image.
After the average brightness value for getting called region, software algorithm is exposed according to the average brightness value, guarantees back
Scene area exposure is normal, and the second shooting image is saved after user's confirmation the second shooting image.
S907, the first shooting image and the second shooting image co-registration are obtained into target shooting image
The corresponding image of portrait facial area in the first shooting image is extracted, using Image Fusion by the image of extraction
It is synthesized in the second shooting image, obtains target shooting image.
In order to make it easy to understand, the present embodiment is illustrated exposure image pickup method with a more specific example, glisten
The scene that lamp shoots portrait guarantees that human face's exposure is normal in the preflashing stage and saves the first shooting image；The main sudden strain of a muscle stage guarantees back
Scape exposure is normal and saves the second shooting image, extracts the first shooting figure after obtaining the first shooting image and the second shooting image
It human face's image and is blended into the second shooting image using blending algorithm as in, finally obtains human face and background and normally expose
The target of light shoots image, when realizing exposure shooting, improves the quality of shooting image, ensure that the experience sense and satisfaction of user
Degree.
3rd embodiment
The present embodiment additionally provides a kind of terminal, shown in Figure 10, further includes processor 1001, memory 1002 and logical
Believe bus 1003, it is to be understood that the terminal in the present embodiment includes flash lamp and camera；Wherein:
Communication bus 1003 is for realizing the connection communication between processor 1001 and memory 1002；
Processor 1001 is for executing one or more program stored in memory 1002, to realize following steps:
Whether detection terminal currently under a preset scenario shoots reference object；
Shooting is exposed to the first predeterminable area and obtains the first shooting in pre flashing of flash lamp if so, opening flash lamp
Image；
In the main sudden strain of a muscle of flash lamp, shooting is exposed to the second predeterminable area and obtains the second shooting image；
First shooting image and the second shooting image co-registration are obtained into target shooting image.
In the present embodiment, first is default including close shot region, and the second predeterminable area includes distant view region.Detection terminal is worked as
It is preceding whether reference object to be shot under a preset scenario, comprising: whether detection terminal is currently in backlight scene or night scene field
Portrait is shot under scape.
Optionally, the first predeterminable area includes portrait facial area, is exposed shoots to the first predeterminable area at this time
It include: to judge whether the region area of portrait facial area is greater than preset area threshold value to the first shooting image；If not, showing
At a distance from camera farther out, each section brightness value is about the same in portrait facial area at this time for portrait, detects portrait facial area
The brightness value of domain central point is exposed shooting to portrait facial area according to brightness value and obtains the first shooting image；Due to people
As at a distance from camera farther out, it is small in the region area of portrait facial area in order to which guarantor's image planes portion regional exposure is normal
When preset area region, flash lamp and the distance value of character face can also be detected, and then according to portrait center of face point
Brightness value and the distance value are exposed shooting to portrait facial area.When the region area of portrait facial area is greater than default face
Product threshold value, since each section is different from the positional relationship of external light source in character face region, then the people is as each in facial area
Partial brightness value is different, the average brightness value of portrait facial area is detected at this time, according to average brightness value to portrait facial area
Domain is exposed shooting and obtains the first shooting image.
Optionally, the second predeterminable area includes the background area in addition to portrait facial area, at this time to the second predeterminable area
Being exposed shooting and obtaining the second shooting image includes: the average brightness value for obtaining background area, according to being averaged for background area
Brightness value is exposed shooting to background area and obtains the second shooting image.Wherein obtain the average brightness value packet of background area
It includes: background area being evenly dividing as unit of preset standard region, determined according to the brightness value in each preset standard region
Average brightness value；Or, the image information to background area identifies, the corresponding brightness value of each image information classification is obtained；Root
Average brightness value is determined according to the corresponding brightness value of each image information classification.
In the present embodiment, the first shooting image and the second shooting image co-registration are obtained into target shooting image, comprising: mention
Take the corresponding image of the first predeterminable area in the first shooting image；The image of extraction is synthesized to second using Image Fusion
It shoots in image, obtains target shooting image.
It is worth noting that, not fully expounding first embodiment, second in the present embodiment in fact in order not to burden explanation
Apply all examples in example, it is understood that, all examples in first embodiment, second embodiment are suitable for this implementation
Example.
The present embodiment also provides a kind of computer readable storage medium, computer-readable recording medium storage have one or
Multiple programs, one or more program can be executed by one or more processor, with realize above-mentioned first embodiment and/or
Each step of exposure image pickup method in second embodiment.
The present embodiment provides a kind of terminal and computer readable storage mediums should for realizing above-mentioned exposure image pickup method
Method includes whether detection terminal currently under a preset scenario shoots reference object；If so, opening flash lamp, glistening
When lamp preflashing, shooting is exposed to the first predeterminable area and obtains the first shooting image；It is default to second in the main sudden strain of a muscle of flash lamp
Region is exposed shooting and obtains the second shooting image；First shooting image and the second shooting image co-registration are obtained into target shooting
Image.I.e. respectively in preflashing and main sudden strain of a muscle, in reference object the first predeterminable area and the second predeterminable area be exposed bat
Take the photograph, guarantee that the first predeterminable area and the exposure of the second predeterminable area are normal, so by the first shooting image and the second shooting image into
Row fusion, obtains the normal image of exposure value, when realizing exposure shooting, improves the quality of shooting image, ensure that user's
Experience sense and satisfaction.
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.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
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, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of exposure image pickup method, which is characterized in that the exposure image pickup method includes:
Whether detection terminal currently under a preset scenario shoots reference object；
Shooting is exposed to the first predeterminable area and obtains the first shooting in the pre flashing of flash lamp if so, opening flash lamp
Image；
In the main sudden strain of a muscle of the flash lamp, shooting is exposed to the second predeterminable area and obtains the second shooting image；
The first shooting image and the second shooting image co-registration are obtained into target shooting image.
2. exposure image pickup method as described in claim 1, which is characterized in that described first is default including close shot region, described
Second predeterminable area includes distant view region.
3. exposure image pickup method as described in claim 1, which is characterized in that whether the detection terminal is currently in default scene
Under reference object is shot, comprising:
Whether detection terminal currently shoots portrait under backlight scene or night scene scene.
4. exposure image pickup method as claimed in claim 3, which is characterized in that first predeterminable area includes portrait facial area
Domain, it is described shooting be exposed to the first predeterminable area obtain the first shooting image include:
Judge whether the region area of the portrait facial area is greater than preset area threshold value；
If not, the brightness value of the portrait facial area central point and/or the distance value of the flash lamp and portrait face are detected,
Shooting is exposed to the portrait facial area according to the brightness value and/or distance value and obtains the first shooting image.
5. exposure image pickup method as claimed in claim 4, which is characterized in that the region area of the portrait facial area is greater than
Preset area threshold value, it is described shooting be exposed to the first predeterminable area obtain the first shooting image include:
The average brightness value for detecting the portrait facial area carries out the portrait facial area according to the average brightness value
Exposure shooting obtains the first shooting image.
6. exposure image pickup method as claimed in claim 4, which is characterized in that second predeterminable area includes removing the portrait
Background area outside facial area, it is described shooting be exposed to the second predeterminable area obtain the second shooting image include:
The average brightness value for obtaining the background area, according to the average brightness value of the background area to the background area into
Row exposure shooting obtains the second shooting image.
7. exposure image pickup method as claimed in claim 6, which is characterized in that the average brightness for obtaining the background area
Value includes:
The background area is evenly dividing as unit of preset standard region, according to the brightness value in each preset standard region
Determine the average brightness value；
Or,
The image information of the background area is identified, the corresponding brightness value of each image information classification is obtained；
The average brightness value is determined according to the corresponding brightness value of each image information classification.
8. such as the described in any item exposure image pickup methods of claim 1-7, which is characterized in that described by the first shooting image
Target shooting image is obtained with the second shooting image co-registration, comprising:
Extract the corresponding image of the first predeterminable area in the first shooting image；
The image of extraction is synthesized in the second shooting image using Image Fusion, obtains target shooting image.
9. a kind of terminal, which is characterized in that the terminal includes processor, memory and communication bus；
The communication bus is for realizing the connection communication between the processor and the memory；
The processor is for executing one or more program stored in the memory, to realize such as claim 1 to 8
Any one of described in exposure image pickup method in step.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage have one or
Multiple programs, one or more of programs can be executed by one or more processor, to realize such as claim 1 to 8
Any one of described in exposure image pickup method in step.
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