CN110177207A - Image pickup method, mobile terminal and the computer readable storage medium of backlight image - Google Patents
Image pickup method, mobile terminal and the computer readable storage medium of backlight image Download PDFInfo
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- CN110177207A CN110177207A CN201910462082.4A CN201910462082A CN110177207A CN 110177207 A CN110177207 A CN 110177207A CN 201910462082 A CN201910462082 A CN 201910462082A CN 110177207 A CN110177207 A CN 110177207A
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- image
- backlight
- mobile terminal
- photographed scene
- video camera
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
-
- 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
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
-
- 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
- H04N23/67—Focus control based on electronic image sensor signals
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Environmental & Geological Engineering (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses image pickup method, mobile terminal and the computer readable storage mediums of a kind of backlight image, and the method comprising the steps of: after starting mobile terminal video camera, whether the photographed scene for detecting the shot by camera is in backlight environment；If the photographed scene is in backlight environment, adjusting the shooting mode of camera is diaphragm priority mode；The corresponding image of the photographed scene is shot under the diaphragm priority mode.The present invention compensates for the disadvantage of mobile terminal camera entering light deficiency under the prior art, improves the quality that image is shot under backlight environment.
Description
Technical field
The present invention relates to field of terminal technology more particularly to a kind of image pickup method, mobile terminal and the calculating of backlight image
Machine readable storage medium storing program for executing.
Background technique
As the common function of mobile terminal, the quality taken pictures has become an important finger for measuring mobile terminal quality
Mark.Major manufacturer terminal uses U.S. face, the video camera of higher pixel one after another, and multiple-camera shoots the modes such as algorithm more preferably to mention
Height is taken pictures quality.However, requirement of the people to the picture quality of shooting is still unable to satisfy, especially in the scene of reversible-light shooting
Under.
When the prior art is shot under backlight environment, the general method using identification people's shoulder completes auto-focusing, though
So it can longer exposure times, but the light-inletting quantity of video camera can not be changed, therefore, identify the method for people's shoulder to backlight image
The improvement limitation of technique for taking；In addition it is also possible to automatically open and take the photograph after the photographed scene that terminal detects backlight image
The flash lamp of camera carries out light filling, but due to time for exposure deficiency, the light photo that is unnatural, therefore taking that flash lamp is mended
It is unnatural.It follows that lower picture quality captured by mobile terminal under current backlight environment.
Summary of the invention
It is a primary object of the present invention to propose a kind of image pickup method of backlight image, mobile terminal and computer-readable deposit
Storage media, it is intended to the technical issues of solving the lower picture quality that mobile terminal is shot under backlight environment.
To achieve the above object, the present invention provides a kind of image pickup method of backlight image, the shootings of the backlight image
Method includes:
After starting mobile terminal video camera, whether the photographed scene for detecting the shot by camera is in backlight ring
Border；
If the photographed scene is in backlight environment, adjusting the shooting mode of camera is diaphragm priority mode；
The corresponding image of the photographed scene is shot under the diaphragm priority mode.
Optionally, described after starting mobile terminal video camera, detect the shot by camera photographed scene whether
Include: in the step of backlight environment
After starting mobile terminal video camera, the corresponding image of the photographed scene, analysis are obtained by the video camera
It is lower than the target area of default average brightness value in described image with the presence or absence of the brightness value of pixel；
The target area if it exists then calculates the region area of the target area；
If the region area is greater than the first preset threshold, it is determined that the photographed scene is in backlight environment.
Optionally, described after starting mobile terminal video camera, it is corresponding that the photographed scene is obtained by the video camera
Image, analyze the step of being lower than the target area of default average brightness value with the presence or absence of the brightness value of pixel in described image
Include:
After starting mobile terminal video camera, the corresponding image of the photographed scene is obtained, is calculated each in described image
The average value of pixel brightness value will calculate resulting average value and be determined as the default average brightness value；
If there are the regions that the brightness value of pixel is lower than the default average brightness value in described image, by the figure
As the brightness value of upper pixel is determined as the target area lower than the region of the default average brightness value.
Optionally, if the region area is greater than the first preset threshold, it is determined that the photographed scene is in backlight
The step of environment includes:
If the region area is greater than the first preset threshold, one is drawn from the central point of the target area to any direction
Straight line detects the brightness value on the straight line with the presence or absence of the pixel of preset ratio lower than the default average brightness value；
If there are the brightness values of the pixel of preset ratio to be lower than the default average brightness value on the straight line, it is determined that
The photographed scene is in backlight environment.
Optionally, described after starting mobile terminal video camera, detect the shot by camera photographed scene whether
Include: in the step of backlight environment
After starting mobile terminal video camera, the ring of shooting environmental locating for the photographed scene of the shot by camera is detected
Border luminous intensity；
If the ambient light intensity is greater than the second preset threshold, detect whether captured scene is in backlight environment.
Optionally, before described the step of shooting the corresponding image of the photographed scene under the diaphragm priority mode,
Further include:
The focal modes for adjusting the video camera are single focal modes, and open the reflector of the video camera.
Optionally, if the photographed scene is in backlight environment, adjusting the shooting mode of camera is aperture
After the step of mode of priority, comprising:
The central point for adjusting the focus in described image to the target area, the focus after being adjusted；
The described the step of corresponding image of the photographed scene is shot under the diaphragm priority mode includes: according to
Focus adjusted shoots the corresponding image of the photographed scene described under diaphragm priority mode.
Optionally, if the photographed scene is in backlight environment, adjusting the shooting mode of camera is aperture
The step of mode of priority includes:
If the photographed scene is in backlight environment, the aperture-coefficient of the video camera is turned down to preset value, and be arranged
The sensitivity of the video camera is third predetermined threshold value, and the screening-mode of the video camera is adjusted to diaphragm priority mode.
In addition, to achieve the above object, the present invention also provides a kind of mobile terminal, the mobile terminal include memory,
Processor and the photographing program for being stored in the backlight image that can be run on the memory and on the processor, the backlight
The photographing program of image realizes the step of image pickup method of backlight image as described above when being executed by the processor.
In addition, to achieve the above object, it is described computer-readable the present invention also provides a kind of computer readable storage medium
It is stored with the photographing program of backlight image on storage medium, is realized such as when the photographing program of the backlight image is executed by processor
The step of image pickup method of backlight image described above.
After the present invention is by detecting that the scene of mobile terminal shot by camera is in backlight environment, video camera is adjusted
Screening-mode is diaphragm priority mode, the image of the photographed scene needed for shooting under video camera is diaphragm priority mode, Ji Nengman
Sufficient image reasonably exposes, and can be reduced the noise on image, improves mobile terminal captured image under backlight environment
Quality.
Detailed description of the invention
A kind of Fig. 1 hardware structural diagram of terminal of each embodiment to realize the present invention；
Fig. 2 is a kind of communications network system architecture diagram provided in an embodiment of the present invention；
Fig. 3 is the flow diagram of the image pickup method first embodiment of backlight image of the present invention；
Fig. 4 is the flow diagram of the image pickup method fourth embodiment of backlight image of the present invention；
The realization, the function and the advantages of the object of the present invention will be explained referring to attached drawing in conjunction with the embodiments.
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 voice 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 video 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 (voice data), and can be voice 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
Voice 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 100, utilizes various interfaces and the entire mobile terminal of connection
100 various pieces, by running or executing the software program and/or module that are stored in memory 109, and calling storage
Data in memory 109 execute the various functions and processing data of mobile terminal 100, to carry out to mobile terminal 100
Integral monitoring.Processor 110 may include one or more processing units；Preferably, processor 110 can integrate application processor and
Modem processor, wherein the main processing operation system of application processor, user interface and application program etc., modulation /demodulation
Processor mainly handles wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 110
In.
In addition, processor 110 is for calling the backlight stored in memory 109 in mobile terminal 100 shown in Fig. 1
The photographing program of image, and execute following operation:
After starting mobile terminal video camera, whether the photographed scene for detecting the shot by camera is in backlight ring
Border；
If the photographed scene is in backlight environment, adjusting the shooting mode of camera is diaphragm priority mode；
The corresponding image of the photographed scene is shot under the diaphragm priority mode.
Further, described after starting mobile terminal video camera, the photographed scene for detecting the shot by camera is
It is no to include: in the step of backlight environment
After starting mobile terminal video camera, the corresponding image of the photographed scene, analysis are obtained by the video camera
It is lower than the target area of default average brightness value in described image with the presence or absence of the brightness value of pixel；
The target area if it exists then calculates the region area of the target area；
If the region area is greater than the first preset threshold, it is determined that the photographed scene is in backlight environment.
Further, described after starting mobile terminal video camera, the photographed scene pair is obtained by the video camera
The image answered analyzes the step for being lower than the target area of default average brightness value in described image with the presence or absence of the brightness value of pixel
Suddenly include:
After starting mobile terminal video camera, the corresponding image of the photographed scene is obtained, is calculated each in described image
The average value of pixel brightness value will calculate resulting average value and be determined as the default average brightness value；
If there are the regions that the brightness value of pixel is lower than the default average brightness value in described image, by the figure
As the brightness value of upper pixel is determined as the target area lower than the region of the default average brightness value.
Further, if the region area is greater than the first preset threshold, it is determined that the photographed scene is in inverse
The step of luminous environment includes:
If the region area is greater than the first preset threshold, one is drawn from the central point of the target area to any direction
Straight line detects the brightness value on the straight line with the presence or absence of the pixel of preset ratio lower than the default average brightness value；
If there are the brightness values of the pixel of preset ratio to be lower than the default average brightness value on the straight line, it is determined that
The photographed scene is in backlight environment.
Further, described after starting mobile terminal video camera, the photographed scene for detecting the shot by camera is
It is no to include: in the step of backlight environment
After starting mobile terminal video camera, the ring of shooting environmental locating for the photographed scene of the shot by camera is detected
Border luminous intensity；
If the ambient light intensity is greater than the second preset threshold, detect whether captured scene is in backlight environment.
Further, the described the step of corresponding image of the photographed scene is shot under the diaphragm priority mode it
Before, processor 1001 is also used to call the photographing program of the backlight image stored in memory 1005, and executes following operation:
The focal modes for adjusting the video camera are single focal modes, and open the reflector of the video camera.
Further, if the photographed scene is in backlight environment, adjusting the shooting mode of camera is light
After the step of enclosing mode of priority, processor 1001 is also used to call the shooting journey of the backlight image stored in memory 1005
Sequence, and execute following operation:
The central point for adjusting the focus in described image to the target area, the focus after being adjusted；
The described the step of corresponding image of the photographed scene is shot under the diaphragm priority mode includes: according to
Focus adjusted shoots the corresponding image of the photographed scene described under diaphragm priority mode.
Further, if the photographed scene is in backlight environment, adjusting the shooting mode of camera is light
Enclose mode of priority the step of include:
If the photographed scene is in backlight environment, the aperture-coefficient of the video camera is turned down to preset value, and be arranged
The sensitivity of the video camera is third predetermined threshold value, and the screening-mode of the video camera is adjusted to diaphragm priority mode.
After the present embodiment detects that photographed scene is in the photographed scene of backlight image by mobile terminal, shooting field is determined
The region of backlight environment is in scape, the video camera adjusted in mobile terminal is diaphragm priority mode, in the shooting mould of video camera
Formula is that the shooting of image is completed under diaphragm priority mode, and it is insufficient scarce to compensate for mobile terminal camera entering light under the prior art
Point improves the quality that image is shot under backlight environment.
Mobile terminal 100 can also include the power supply 111 (such as battery) powered to all parts, optionally, 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 businessData flowWith IP bearing resourceStrategyWithChargingControl strategy decision point, it is
Strategy selects and provides available strategy and charging control decision with charge execution function unit (not shown).
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.
Mobile terminal specific embodiment of the present invention and each embodiment of image pickup method of following backlight images are essentially identical,
This is repeated no more.
Based on above structure, each embodiment of the image pickup method of backlight image of the present invention is proposed.
The present invention provides a kind of image pickup method of backlight image.
It is the flow diagram of the image pickup method first embodiment of backlight image of the present invention referring to Fig. 3, Fig. 3.
In the present embodiment, the embodiment of the image pickup method of backlight image is provided, it should be noted that although in process
Logical order is shown in figure, but in some cases, it can be to be different from shown or described by sequence execution herein
Step.
In the present embodiment, the image pickup method of backlight image includes:
Step S10, after starting mobile terminal video camera, whether the photographed scene for detecting the shot by camera is in
Backlight environment.
When mobile terminal detects the instruction for opening video camera, mobile terminal starts its video camera, and mobile terminal passes through
Its video camera can get the image of the photographed scene shot needed for it, at this point, mobile terminal screen can show the photographed scene
Image.It is understood that the image of photographed scene can be presented on mobile whole when video camera is directed at the scene to be shot
It holds on screen.The instruction for opening video camera is that user is completed by camera buttons in pressing mobile terminal.Work as mobile terminal
After starting video camera, whether the photographed scene of mobile terminal detection shot by camera is in backlight environment, i.e., on detection screen
Image whether there is darker region.
Further, step S10 includes:
Step a obtains the corresponding figure of the photographed scene by the video camera after starting mobile terminal video camera
Picture analyzes the target area for being lower than default average brightness value in described image with the presence or absence of the brightness value of pixel.
Further, after the video camera starting in mobile terminal, mobile terminal is by obtaining the required photographed scene shot
Corresponding image, mobile terminal are lower than by the brightness value that the photosensitive element in video camera is analyzed on image with the presence or absence of pixel
The region of default average brightness value, and the region that the brightness value of pixel on image is lower than default average brightness value is determined as mesh
Mark region.Wherein, photosensitive element is that the core component of mobile terminal video camera, including but not limited to light sensitive diode and light pass
Sensor.
Step b, the target area, then calculate the region area of the target area if it exists.
Step c, if the region area is greater than the first preset threshold, it is determined that the photographed scene is in backlight environment.
If it is determined that mobile terminal then calculates the region area of target area, and judges target there are target area on image
Whether the region area in region is greater than the first preset threshold, wherein and the first preset threshold is arranged according to specific needs, and first
Preset threshold may be configured as 20 square centimeters, 25 square centimeters or 30 square centimeters etc..If it is determined that the area surface of target area
Product is greater than the first preset threshold, and mobile terminal then determines that photographed scene is in backlight environment；If it is determined that the area surface of target area
Product is less than or equal to the first preset threshold, and mobile terminal then determines that photographed scene is not in backlight environment.Further, if really
Determine not no presence of target area on image, mobile terminal then determines that photographed scene is not in backlight environment.
Further, in order to improve the accuracy whether determining photographed scene is in backlight environment, the backlight image
Image pickup method further include:
Step d, if the region area is greater than the first preset threshold, from the central point of the target area to any side
To straight line is drawn, detect default average bright lower than described with the presence or absence of the brightness value of the pixel of preset ratio on the straight line
Angle value；
Step e, if there are the brightness values of the pixel of preset ratio to be lower than the default average brightness value on the straight line,
Then determine that the photographed scene is in backlight environment.
Further, however, it is determined that region area is greater than the first preset threshold, mobile terminal from the central point of target area to
Any direction draws straight line, and detects average bright lower than default with the presence or absence of the brightness value of the pixel of preset ratio on straight line
Angle value.If detecting, there are the brightness values of the pixel of preset ratio to be lower than default average brightness value, mobile terminal on the straight line
Then determine that photographed scene is in backlight environment.If it is average lower than default that there is no the brightness values of the pixel of preset ratio on straight line
Brightness value, mobile terminal then determine that photographed scene is not at backlight environment.Wherein, preset ratio may be configured as half, and three
/ mono- or 5/7ths etc. is less than or equal to 1 numerical value, for example sets 80:100 for preset ratio, i.e., from target
The central point in region draws straight line, if having on this straight line 80% or the pixel higher than 80% brightness value lower than pre-
If average brightness value, mobile terminal then determines that photographed scene is in backlight environment；If there is the pixel lower than 80% on this straight line
The brightness value of point is lower than default average brightness value, and mobile terminal then determines that photographed scene is not at backlight environment.
Step S20, if the photographed scene is in backlight environment, adjusting the shooting mode of camera is aperture priority
Mode.
After determining that photographed scene is in backlight environment, it is aperture priority mould that mobile terminal, which adjusts shooting mode of camera,
Formula, wherein diaphragm priority mode is aperture priority, is one of shooting mode of camera, be according to shooting need it is background blurring or
It is clear background, aperture parameters is preferentially set, then shutter speed and sensitivity is arranged automatically.In the present embodiment, mobile whole
The screening-mode of video camera can be adjusted to diaphragm priority mode automatically by end.
Further, step S20 includes:
Step f turns the aperture-coefficient of the video camera down to preset value if the photographed scene is in backlight environment,
And the sensitivity that the video camera is arranged is third predetermined threshold value, and the screening-mode of the video camera is adjusted to aperture priority
Mode.
Specifically, however, it is determined that photographed scene is in backlight environment, and mobile terminal then turns the aperture-coefficient of video camera down value
Preset value, and third predetermined threshold value is set by the sensitivity of video camera, it is excellent that the screening-mode of video camera is adjusted to aperture
First mode.In the present embodiment, the specific size of preset value and third predetermined threshold value is not limited, can such as be set preset value to
0.7,0.8 or 0.9 etc., 200,300 or 350 etc. are set by third predetermined threshold value.It is understood that aperture-coefficient is determined
The size of iris setting, can be so that control the light-inletting quantity of video camera by aperture system；Sensitivity determines the quality of imaging, sensitivity
Lower, image quality is finer and smoother, and sensitivity is higher, is imaged fuzzyyer.
Step S30 shoots the corresponding image of the photographed scene under the diaphragm priority mode.
After video camera is adjusted to diaphragm priority mode by mobile terminal, mobile terminal is shot under diaphragm priority mode
The photographed scene obtains the corresponding image of the photographed scene.Specifically, user can be triggered by the shooting button in mobile terminal
Shooting instruction shoots the bat according to the shooting instruction after mobile terminal detects the shooting instruction under diaphragm priority mode
Scene is taken the photograph, the corresponding image of the photographed scene is obtained；Mobile terminal can also be by touching after starting video camera certain time length automatically
Hair shooting instruction shoots the corresponding image of the photographed scene, at this point, the duration is arranged according to specific needs, the present embodiment is not
Limit the size of the duration.
After the present embodiment is by detecting that the scene of mobile terminal shot by camera is in backlight environment, video camera is adjusted
Screening-mode be diaphragm priority mode, video camera be diaphragm priority mode under shoot needed for photographed scene image, can
Meet image reasonably to expose, and can be reduced the noise on image, improves mobile terminal captured image under backlight environment
Quality
Further, the second embodiment of the image pickup method of backlight image of the present invention is proposed.
The first embodiment of the image pickup method of the image pickup method second embodiment of the backlight image and the backlight image
Difference be, it is described after starting mobile terminal video camera, pass through the video camera and obtain the corresponding figure of the photographed scene
Picture is analyzed the step of being lower than the target area of default average brightness value with the presence or absence of the brightness value of pixel in described image and is wrapped
It includes:
Step g obtains the corresponding image of the photographed scene after starting mobile terminal video camera, calculates described image
The average value of upper each pixel brightness value, will calculate resulting average value and is determined as the default average brightness value.
Step h will if there are the regions that the brightness value of pixel is lower than the default average brightness value in described image
The brightness value of pixel is determined as the target area lower than the region of the default average brightness value in described image.
It is mobile to obtain the corresponding image of photographed scene after mobile terminal starts camera, determine photographed scene corresponding diagram
As the brightness value of upper each pixel, the average value of each pixel in photographed scene correspondence image is calculated, will be calculated resulting
Average value is determined as default average brightness value, and detects resulting pre- lower than calculating with the presence or absence of pixel brightness value on the image
If the region of average brightness value.If detecting, there are pixel brightness values lower than the resulting default average brightness value of calculating on image
Region, the region that the brightness value of pixel on image is lower than default average brightness value is then determined as target area by mobile terminal
Domain.
The present embodiment is by calculating default average brightness according to the brightness value of each pixel of photographed scene correspondence image
Then value determines target area according to resulting default average brightness value is calculated, improves whether determining mobile terminal is in
The accuracy of backlight environment.
Further, the 3rd embodiment of the image pickup method of backlight image of the present invention is proposed.
The first embodiment of the image pickup method of the image pickup method 3rd embodiment of the backlight image and the backlight image
Or the difference of second embodiment is, and it is described after starting mobile terminal video camera, detect the shooting of the shot by camera
Whether scene, which is in the step of backlight environment, includes:
Step i detects the locating shooting ring of photographed scene of the shot by camera after starting mobile terminal video camera
The ambient light intensity in border.
Step g detects whether captured scene is in backlight ring if the ambient light intensity is greater than the second preset threshold
Border.
Further, after mobile terminal starts video camera, mobile terminal passes through the ambient light sensor detection built in it
The ambient light intensity of shooting environmental locating for the photographed scene of shot by camera, and judge whether the ambient light intensity is greater than second
Preset threshold.Wherein, the second preset threshold may be configured as 200Lux (lux), 350Lux or 400Lux etc..Environment light passes
Sensor includes but is not limited to light projector and light-receiving device.If mobile terminal detects that ambient light intensity is greater than the second preset threshold, move
Dynamic terminal then detects whether photographed scene is in backlight environment；If mobile terminal detects that ambient light intensity is less than or equal to second
Preset threshold, mobile terminal then directly shoot the corresponding image of the photographed scene.
The present embodiment is by detecting the environmental light intensity of shooting environmental locating for photographed scene after mobile terminal starts camera
Degree just detects whether shooting environmental is in backlight environment, avoids when detecting that ambient light intensity is greater than the second preset threshold
When ambient light intensity is lesser, that is, avoids when photographed scene can not be in backlight environment, detection is also gone to clap
It takes the photograph whether scene is in backlight environment, improves the efficiency of shooting image, and reduce memory needed for mobile terminal is shot.
Further, the fourth embodiment of the image pickup method of backlight image of the present invention is proposed.
The image pickup method the first, second or the of the image pickup method fourth embodiment of the backlight image and the backlight image
The difference of three embodiments is, referring to Fig. 4, the image pickup method of backlight image further include:
Step S40, the focal modes for adjusting the video camera are single focal modes, and open the reflective of the video camera
Plate.
After mobile terminal detects that photographed scene is in backlight environment, mobile terminal automatic trigger adjustment instruction and starting
Instruction, and the focal modes of video camera are adjusted to by single focal modes according to the adjustment instruction, and according to the enabled instruction
Open the reflector of video camera.When the focal modes of video camera are adjusted to single focal modes by mobile terminal and open video camera
Reflector after, mobile terminal shoots the corresponding image of photographed scene under diaphragm priority mode.Further, mobile terminal exists
After detecting that photographed scene is in backlight environment, mobile terminal can export prompt information prompt user in its display interface and will take the photograph
The focal modes of camera are adjusted to single focal modes, and open the reflector of video camera, at this point, user can be in mobile terminal
Display interface in triggering adjustment focal modes adjustment instruction, and in display interface triggering open reflector starting refer to
It enables.In the present embodiment, the way of output of prompt information is not limited, such as mobile terminal can be defeated by voice or text mode
The prompt information out.It should be noted that the advantage of single focal modes be it is convenient, when mobile terminal needs be continuously shot it is more
When width image, it is only necessary to first time shoot when complete focus operation, shooting later does not need to focus again, but if with
Family is dissatisfied to focusing result, can focus again manually.The purpose of opening reflector is the light in order to make reflector for natural light
Line reflection is into photographed scene, with the purpose for the photographed scene light filling being reached under backlight environment.
The present embodiment is single focal modes by the focal modes that will adjust video camera, improves and is clapped by mobile terminal
The convenience of image is taken the photograph, and opens reflector during shooting image, is photographed scene light filling by natural light, relative to beating
Opening flash lamp is photographed scene light filling, and embodiment improves the picture qualities of captured image.
Further, the 5th embodiment of the image pickup method of backlight image of the present invention is proposed.
The image pickup method first, second of the 5th embodiment of image pickup method of the backlight image and the backlight image, the
Three or the difference of fourth embodiment be, the image pickup method of backlight image further include:
Step k adjusts the central point of the focus in described image to the target area, the focus after being adjusted.
Step S30 includes:
Step l shoots the photographed scene correspondence described according to the focus adjusted under diaphragm priority mode
Image.
After mobile terminal determines target area, mobile terminal automatic trigger adjusts the adjustment instruction of focus, and according to this
The adjustment instruction of adjustment focus adjusts the focus in photographed scene correspondence image to the central point of target area, makes photographed scene
Focal position in correspondence image is overlapped with the center position of target area, the focus after being adjusted.When mobile terminal obtains
To after focus adjusted, mobile terminal is according to focus adjusted, and shooting under diaphragm priority mode, photographed scene is corresponding
Image.
The present embodiment is adjusted the focus in photographed scene correspondence image to the central point of target area by mobile terminal,
Focus after being adjusted, and according to focus adjusted, the corresponding image of photographed scene is being shot under diaphragm priority mode,
The accuracy rate focused during shooting image is improved, the picture quality of captured image is further increased, that is, improves
The clarity and image quality quality of captured image.
In addition, the embodiment of the present invention also proposes a kind of computer readable storage medium, the computer readable storage medium
On be stored with backlight image image pickup method program, it is real when the program of the image pickup method of the backlight image is executed by processor
Existing following steps:
After starting mobile terminal video camera, whether the photographed scene for detecting the shot by camera is in backlight ring
Border；
If the photographed scene is in backlight environment, adjusting the shooting mode of camera is diaphragm priority mode
The corresponding image of the photographed scene is shot under the diaphragm priority mode.
Further, described after starting mobile terminal video camera, the photographed scene for detecting the shot by camera is
It is no to include: in the step of backlight environment
After starting mobile terminal video camera, the corresponding image of the photographed scene, analysis are obtained by the video camera
It is lower than the target area of default average brightness value in described image with the presence or absence of the brightness value of pixel；
The target area if it exists then calculates the region area of the target area；
If the region area is greater than the first preset threshold, it is determined that the photographed scene is in backlight environment.
Further, described after starting mobile terminal video camera, the photographed scene pair is obtained by the video camera
The image answered analyzes the step for being lower than the target area of default average brightness value in described image with the presence or absence of the brightness value of pixel
Suddenly include:
After starting mobile terminal video camera, the corresponding image of the photographed scene is obtained, is calculated each in described image
The average value of pixel brightness value will calculate resulting average value and be determined as the default average brightness value；
If there are the regions that the brightness value of pixel is lower than the default average brightness value in described image, by the figure
As the brightness value of upper pixel is determined as the target area lower than the region of the default average brightness value.
Further, if the region area is greater than the first preset threshold, it is determined that the photographed scene is in inverse
The step of luminous environment includes:
If the region area is greater than the first preset threshold, one is drawn from the central point of the target area to any direction
Straight line detects the brightness value on the straight line with the presence or absence of the pixel of preset ratio lower than the default average brightness value；
If there are the brightness values of the pixel of preset ratio to be lower than the default average brightness value on the straight line, it is determined that
The photographed scene is in backlight environment.
Further, described after starting mobile terminal video camera, the photographed scene for detecting the shot by camera is
It is no to include: in the step of backlight environment
After starting mobile terminal video camera, the ring of shooting environmental locating for the photographed scene of the shot by camera is detected
Border luminous intensity；
If the ambient light intensity is greater than the second preset threshold, detect whether captured scene is in backlight environment.
Further, the described the step of corresponding image of the photographed scene is shot under the diaphragm priority mode it
Before, when the program of the image pickup method of the backlight image is executed by processor, also execute following steps:
The focal modes for adjusting the video camera are single focal modes, and open the reflector of the video camera.
Further, if the photographed scene is in backlight environment, adjusting the shooting mode of camera is light
After the step of enclosing mode of priority, when the program of the image pickup method of the backlight image is executed by processor, following step is also executed
It is rapid:
The central point for adjusting the focus in described image to the target area, the focus after being adjusted；
The described the step of corresponding image of the photographed scene is shot under the diaphragm priority mode includes: according to
Focus adjusted shoots the corresponding image of the photographed scene described under diaphragm priority mode.
Further, if the photographed scene is in backlight environment, adjusting the shooting mode of camera is light
Enclose mode of priority the step of include:
If the photographed scene is in backlight environment, the aperture-coefficient of the video camera is turned down to preset value, and be arranged
The sensitivity of the video camera is third predetermined threshold value, and the screening-mode of the video camera is adjusted to diaphragm priority mode.
The image pickup method embodiment base of computer readable storage medium specific embodiment of the present invention and above-mentioned backlight image
This is identical, and details are not described herein.
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 system that include a series of elements not only include those elements, and
And further include the other elements being not explicitly listed, or further include for this process, method, article or system 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 system.
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 device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of image pickup method of backlight image, which is characterized in that the image pickup method of the backlight image the following steps are included:
After starting mobile terminal video camera, whether the photographed scene for detecting the shot by camera is in backlight environment；
If the photographed scene is in backlight environment, adjusting the shooting mode of camera is diaphragm priority mode；
The corresponding image of the photographed scene is shot under the diaphragm priority mode.
2. the image pickup method of backlight image as described in claim 1, which is characterized in that described in starting mobile terminal video camera
Afterwards, it detects the step of whether the photographed scene of the shot by camera is in backlight environment and includes:
After starting mobile terminal video camera, the corresponding image of the photographed scene is obtained by the video camera, described in analysis
It is lower than the target area of default average brightness value on image with the presence or absence of the brightness value of pixel；
The target area if it exists then calculates the region area of the target area；
If the region area is greater than the first preset threshold, it is determined that the photographed scene is in backlight environment.
3. the image pickup method of backlight image as claimed in claim 2, which is characterized in that described in starting mobile terminal video camera
Afterwards, the corresponding image of the photographed scene is obtained by the video camera, analyzed in described image with the presence or absence of the bright of pixel
Angle value is lower than the step of target area of default average brightness value and includes:
After starting mobile terminal video camera, the corresponding image of the photographed scene is obtained, calculates each pixel in described image
The average value of point brightness value, will calculate resulting average value and is determined as the default average brightness value；
If, will be in described image there are the region that the brightness value of pixel is lower than the default average brightness value in described image
The brightness value of pixel is determined as the target area lower than the region of the default average brightness value.
4. the image pickup method of backlight image as claimed in claim 2, which is characterized in that if the region area is greater than the
One preset threshold, it is determined that the photographed scene is in the step of backlight environment and includes:
If the region area is greater than the first preset threshold, one is drawn directly from the central point of the target area to any direction
Line detects the brightness value on the straight line with the presence or absence of the pixel of preset ratio lower than the default average brightness value；
If there are the brightness values of the pixel of preset ratio to be lower than the default average brightness value on the straight line, it is determined that described
Photographed scene is in backlight environment.
5. the image pickup method of backlight image as described in claim 1, which is characterized in that described in starting mobile terminal video camera
Afterwards, it detects the step of whether the photographed scene of the shot by camera is in backlight environment and includes:
After starting mobile terminal video camera, the environment light of shooting environmental locating for the photographed scene of the shot by camera is detected
Intensity；
If the ambient light intensity is greater than the second preset threshold, detect whether captured scene is in backlight environment.
6. the image pickup method of backlight image as described in claim 1, which is characterized in that described under the diaphragm priority mode
Before the step of shooting the photographed scene corresponding image, further includes:
The focal modes for adjusting the video camera are single focal modes, and open the reflector of the video camera.
7. the image pickup method of backlight image as described in claim 1, which is characterized in that if the photographed scene is in inverse
Luminous environment, then adjust the shooting mode of camera be diaphragm priority mode the step of after, comprising:
The central point for adjusting the focus in described image to the target area, the focus after being adjusted；
The described the step of corresponding image of the photographed scene is shot under the diaphragm priority mode includes: according to the adjustment
Focus afterwards shoots the corresponding image of the photographed scene described under diaphragm priority mode.
8. the image pickup method of backlight image as described in any one of claim 1 to 7, which is characterized in that if the shooting
Scene is in backlight environment, then adjusts the step of shooting mode of camera is diaphragm priority mode and include:
If the photographed scene is in backlight environment, the aperture-coefficient of the video camera is turned down to preset value, and described in being arranged
The sensitivity of video camera is third predetermined threshold value, and the screening-mode of the video camera is adjusted to diaphragm priority mode.
9. a kind of mobile terminal, which is characterized in that the mobile terminal includes memory, processor and is stored in the memory
The photographing program of backlight image that is upper and can running on the processor, the photographing program of the backlight image is by the processing
The step of image pickup method such as backlight image described in any item of the claim 1 to 8 is realized when device executes.
10. a kind of computer readable storage medium, which is characterized in that be stored with backlight figure on the computer readable storage medium
It realizes when the photographing program of the photographing program of picture, the backlight image is executed by processor such as any one of claims 1 to 8 institute
The step of image pickup method for the backlight image stated.
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