CN109547703A - A kind of image pickup method of picture pick-up device, device, electronic equipment and medium - Google Patents
A kind of image pickup method of picture pick-up device, device, electronic equipment and medium Download PDFInfo
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- CN109547703A CN109547703A CN201811624873.4A CN201811624873A CN109547703A CN 109547703 A CN109547703 A CN 109547703A CN 201811624873 A CN201811624873 A CN 201811624873A CN 109547703 A CN109547703 A CN 109547703A
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- camera
- exposure time
- optimum exposure
- time
- shooting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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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
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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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
Abstract
The present invention discloses image pickup method, device, electronic equipment and the medium of a kind of picture pick-up device, this method comprises: after equipment enters shooting ready mode, the current optimum exposure time of the first camera is obtained, optimum exposure time meets longest time for exposure when preset requirement for the clarity that the first camera shoots image；In the mapping table of the optimum exposure time of the optimum exposure time and second camera of the first camera prestored, the target optimum exposure time of the second camera corresponding with the current optimum exposure time is found out；Exposure time when first camera shooting is arranged is the current optimum exposure time, and it is the target optimum exposure time that the exposure time when second camera is shot, which is arranged,.Method, apparatus, electronic equipment and medium provided by the invention are difficult to the technical issues of taking into account to solve the existing clarity of night scene shooting and brightness in the prior art, realize the technical effect for improving shooting picture quality.
Description
Technical field
The present invention relates to field of camera technology more particularly to a kind of image pickup method of picture pick-up device, device, electronic equipment and
Medium.
Background technique
In the case where user shoots the scene of night scene with picture pick-up device, photograph is improved in order to make the picture pick-up device acquire enough illumination
The brightness of piece, the time for exposure generally required are long.
However the time for exposure long stability requirement for holding picture pick-up device to user is relatively high, is easy for during long exposure
Occur causing due to hand shaking etc. the night scene image of shooting fuzzy.And the time for exposure short night scene image that will lead to shooting is too
Secretly, brightness is inadequate.And since the gripping degree of stability of different user is different, it can not be fitted by the unified setting time for exposure
Picture pick-up device with all users.
As it can be seen that current night scene shooting there is technical issues that clarity and brightness are difficult to.
Summary of the invention
In view of the above problems, it proposes on the present invention overcomes the above problem or at least be partially solved in order to provide one kind
State image pickup method, device, electronic equipment and the medium of the picture pick-up device of problem.
In a first aspect, providing a kind of image pickup method of picture pick-up device, the equipment includes the first camera and the second camera shooting
Head, which comprises
After the equipment enters shooting ready mode, the current optimum exposure time of first camera, institute are obtained
State the longest time for exposure when clarity that optimum exposure time is first camera shooting image meets preset requirement；
In the optimum exposure time of the optimum exposure time and second camera of first camera prestored
In mapping table, the target optimum exposure of the second camera corresponding with the current optimum exposure time is found out
Time；
Exposure time when first camera shooting is arranged is the current optimum exposure time, and described in setting
Exposure time when second camera is shot is the target optimum exposure time, so that first camera is worked as according to described
Preceding optimum exposure time, the second camera are shot according to the target optimum exposure time.
Optionally, first camera is focal length camera, and the second camera is that black and white camera or colour are taken the photograph
As head.
Optionally, described to obtain the current optimum exposure time of first camera, comprising: from initial exposure duration
Start, during gradually changing the exposure time, detects first camera in the acquired image of each exposure time
Clarity, longest time for exposure when meeting the preset requirement using the clarity is as when the current optimum exposure
Between.
Optionally, when the initial exposure when maximum exposure time or minimum exposure of a length of first camera
It is long.
Optionally, the optimum exposure time of first camera and the optimum exposure time of the second camera reflect
It penetrates relation table to obtain at least through following steps: testing the optimum exposure time of first camera under a variety of jitter conditions
With the optimum exposure time of the second camera；First camera of acquisition will be tested under same jitter conditions most
The optimum exposure time of good time for exposure and the second camera is established as a mapping relations, is based on every kind of jitter conditions pair
The mapping relations answered generate the mapping table.
Optionally, the shooting ready mode is preview mode, and the preview image shown in the preview mode is to pass through
What the second camera obtained.
Second aspect, provides a kind of filming apparatus of picture pick-up device, and the equipment includes the first camera and the second camera shooting
Head, described device include:
Test module, for it is current most to obtain first camera after the equipment enters shooting ready mode
Good time for exposure, the optimum exposure time are that first camera is shot when the clarity of image meets preset requirement most
The long time for exposure；
Searching module, in first camera prestored optimum exposure time and the second camera most
In the mapping table of good time for exposure, the second camera corresponding with the current optimum exposure time is found out
Target optimum exposure time；
Shooting module, when exposure time when for first camera shooting to be arranged is the current optimum exposure
Between, and the exposure time being arranged when second camera shooting is the target optimum exposure time, so that described first takes the photograph
As head is shot according to the current optimum exposure time, the second camera according to the target optimum exposure time.
Optionally, first camera is focal length camera, and the second camera is that black and white camera or colour are taken the photograph
As head.
The third aspect, provides a kind of electronic equipment, including memory, processor and storage on a memory and can handled
The computer program run on device, the processor perform the steps of when executing described program
After the equipment enters shooting ready mode, the current optimum exposure time of first camera, institute are obtained
State the longest time for exposure when clarity that optimum exposure time is first camera shooting image meets preset requirement；
In the optimum exposure time of the optimum exposure time and second camera of first camera prestored
In mapping table, the target optimum exposure of the second camera corresponding with the current optimum exposure time is found out
Time；
Exposure time when first camera shooting is arranged is the current optimum exposure time, and described in setting
Exposure time when second camera is shot is the target optimum exposure time, so that first camera is worked as according to described
Preceding optimum exposure time, the second camera are shot according to the target optimum exposure time.
Fourth aspect provides a kind of computer readable storage medium, is stored thereon with computer program, and the program is processed
Device performs the steps of when executing
After the equipment enters shooting ready mode, the current optimum exposure time of first camera, institute are obtained
State the longest time for exposure when clarity that optimum exposure time is first camera shooting image meets preset requirement；
In the optimum exposure time of the optimum exposure time and second camera of first camera prestored
In mapping table, the target optimum exposure of the second camera corresponding with the current optimum exposure time is found out
Time；
Exposure time when first camera shooting is arranged is the current optimum exposure time, and described in setting
Exposure time when second camera is shot is the target optimum exposure time, so that first camera is worked as according to described
Preceding optimum exposure time, the second camera are shot according to the target optimum exposure time.
The technical solution provided in the embodiment of the present invention, has at least the following technical effects or advantages:
The image pickup method of picture pick-up device provided in an embodiment of the present invention presets the optimum exposure time of the first camera
With the mapping table of the optimum exposure time of second camera, and picture pick-up device enter shooting ready mode after, first test
The current optimum exposure time of first camera out finds out the target of corresponding second camera most further according to mapping table
The good time for exposure, so that the exposure time of each camera be arranged according to current test result and checking result.To realize energy
The exposure time of each camera is targetedly set according to the current shooting state of picture pick-up device, on the basis for guaranteeing clarity
The upper brightness for improving shooting photo.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is a kind of possible terminal system schematic diagram；
Fig. 2 is the flow chart of the image pickup method of picture pick-up device in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the filming apparatus of picture pick-up device in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of electronic equipment in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of storage medium in the embodiment of the present invention.
Specific embodiment
Technical solution thinking in the embodiment of the present invention is as follows:
The present embodiment first tests the best exposure of the optimum exposure time and second camera that obtain and save the first camera
Mapping table between light time.After each picture pick-up device enters shooting ready mode, first tested out under current dither state
The current optimum exposure time of first camera, the target for finding out corresponding second camera further according to mapping table are best
Time for exposure, thus when the exposure of each camera being arranged according to current optimum exposure time and target optimum exposure time
It is long.The brightness of shooting photo is also ensured on the basis of guaranteeing image definition.
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein
Middle character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
It is introduced for convenience of technical solution in the embodiment of the present invention, first corresponds to be imaged in the embodiment of the present invention
The terminal system of the image pickup method of equipment is introduced.Referring to FIG. 1, being a kind of possible terminal system schematic diagram.In Fig. 1
In, terminal system 100 is the system for including touch input unit 101.It will be appreciated, however, that the system may also include one
Or other multiple physical user-interface devices, such as physical keyboard, mouse and/or control stick.The operation platform of terminal system 100
It may be adapted to run one or more operating systems, such as Android (Android) operating system, Windows (form) operating system,
Apple IOS operating system, BlackBerry (blackberry, blueberry) operating system, the general-purpose operating systems such as Google's Chrome operating system.
However, in other embodiments, terminal system 100 can also run dedicated operating system rather than the general-purpose operating system.
In certain embodiments, terminal system 100 can be supported to run one or more application programs simultaneously, including but unlimited
One or more application programs in following application program: disk management application program, safety encryption application program, permission pipe
Manage application program, application program, word-processing application, presentation slides application program, spreadsheet application is arranged in system
Procedure, data library application program, game application, telephony application, videoconference application, e-mail applications journey
Sequence, instant message application program, photo management application program, digital camera applications program, digital video camera application program,
Web-browsing application program, digital music player application and digital video player application etc..
The operating system and various application programs run in terminal system can be used touch input unit 101 as use
Family is physically entered interface device.Touch input unit 101 has a touch-surface as user interface.Optionally, it touches
The touch-surface of formula input unit 101 is display 102 surface of screen, and touch input unit 101 and display screen 102 are common
Form touch-sensitive display panel 120, however in further embodiments, touch input unit 101 have it is one independent, not with its
The touch-surface that his EM equipment module shares.Touch-sensitive display panel is still further comprised is on touch input unit 101 for detecting
The no one or more contact sensors 106 being in contact.
Touch-sensitive display panel 120 optionally uses LCD (liquid crystal display, Liquid Crystal Display) technology, LPD
(light emitting polymer displays, Laser-powered Phosphor Display) technology or LED (light emitting diode) technology, or
Other any technologies that image may be implemented and show.Touch-sensitive display panel 120 further can be used currently known or develop later
Any one of a variety of touch-sensing technologies detects any movement or blocking of contact and contact, such as capacitive sensing technology
Or resistive sensing technology.In some embodiments, touch-sensitive display panel 120 can detect simultaneously single contact point or multiple contact points and
It moves changing condition.
In addition to touch input unit 101 is with optional display screen 102, terminal system 100 may also include memory
At 103 (it optionally includes one or more computer readable storage mediums), Memory Controller 104 and one or more
Device (Processor) 105 is managed, components above can be communicated by one or more signal bus 107.
Memory 103 may include caching (Cache), high-speed random access memory (RAM), such as common double data
Rate Synchronous Dynamic Random Access Memory (DDR SDRAM), and may also include nonvolatile memory (NVRAM), such as one
Or multiple read-only memory (ROM), disk storage equipment, flash memory (Flash) memory devices or other nonvolatile solid states are deposited
Storage device such as CD (CD-ROM, DVD-ROM), floppy disk or data tape etc..Memory 103 can be used for storing aforementioned operation
System and application software, and generated and received various types data in system work process.Storage control 104
The other component of controllable system 100 accesses memory 103.
Processor 105 is for running or executing the operating system being stored in internal storage 103, various software journeys
Sequence and the instruction set of itself, and for handling from touch input unit 101 or being received from other external input approach
The data and instruction arrived, to realize the various functions of system 100.Processor 105 can include but is not limited to central processing unit
(CPU), general image processor (GPU), microprocessor (MCU), digital signal processor (DSP), field programmable gate
Array (FPGA), one of application specific integrated circuit (ASIC) or a variety of.In some embodiments, it processor 105 and deposits
Memory controller 104 can be realized on a single chip.In some other embodiments, they can be respectively in core independent of each other
On piece is realized.
In Fig. 1, signal bus 107 is configured as communicating the various components connection of terminal system 100.It should manage
Solution, the configuration of signal bus 107 shown in FIG. 1 and connection type are exemplary and not limiting.Depending on specifically answering
With environment and hardware configuration requirement, in other embodiments, signal bus 107 can use other differences but for art technology
The usual connection type of personnel and its routinely combination or variation, to realize required signal connection between various components.
Further, in certain embodiments, terminal system 100 also may include peripheral equipment I/O interface 111, RF circuit
112, voicefrequency circuit 113, loudspeaker 114, microphone 115, photographing module 116.Equipment 100 may also include one or more differences
The sensor module 118 of type.
RF (radio frequency) circuit 112 is for sending and receiving radiofrequency signal to realize and be communicated with other communication equipments.RF
Circuit 112 may include but be not limited to antenna system, RF transceiver, one or more amplifiers, tuner, one or more oscillations
Device, digital signal processor, codec chip group, subscriber identity module (SIM) card, memory etc..RF circuit 112 is optionally
It is communicated by wireless communication with network and other equipment, which is such as internet (also referred to as WWW
(WWW)), Intranet and/or wireless network (such as cellular phone network, WLAN (LAN) and/or Metropolitan Area Network (MAN) (MAN)).RF
Circuit 112 may also include the circuit for detecting the field near-field communication (NFC).One or more communication marks can be selected in wireless communication
Quasi-, agreement and technology, including but not limited to global system for mobile communications (GSM), enhanced data gsm environment (EDGE), high speed
Downlink packets access (HSDPA), High Speed Uplink Packet access (HSUPA), evolution, clear data (EV-DO), HSPA,
HSPA+, double unit HSPA (DC-HSPDA), long term evolution (LTE), near-field communication (NFC), wideband code division multiple access (W-CDMA),
CDMA (CDMA), time division multiple acess (TDMA), bluetooth, Bluetooth Low Energy, Wireless Fidelity (Wi-Fi) are (for example, IEEE
802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n and/or IEEE 802.11ac), Internet protocol
Voice (VoIP), Wi-MAX, email protocol are (for example, internet message access protocol (IMAP) and/or post office protocol
(POP)), instant message is (for example, scalable message handles and expands there are agreement (XMPP), for instant message and in the presence of utilizing
Session initiation Protocol (SIMPLE), instant message and the presence service (IMPS) of exhibition), and/or short message service (SMS) or
Including in the application submission date also it is untapped go out communication protocol any other communication protocol appropriate.
Voicefrequency circuit 113, loudspeaker 114 and microphone 115 provide the audio interface between user and terminal system 100.
Voicefrequency circuit 113 receives audio data from exterior I/O port 111, and audio data is converted to electric signal, and by electric signal transmission
To loudspeaker 114.Loudspeaker 114 converts electrical signals to the audible sound wave of the mankind.Voicefrequency circuit 113 is also received by microphone
115 electric signals converted according to sound wave.Voicefrequency circuit 113 can further convert electrical signals to audio data, and by audio number
According to being transferred to exterior I/O port 111 to be sent to external device processes.Audio data can be in processor 105 and storage control
Under 104 control, it is transferred to memory 103 and/or RF circuit 112.In some embodiments, voicefrequency circuit 113 may be used also
It is connected to earphone microphone interface.
Photographing module 116 is used to carry out still image and video capture according to the instruction from processor 105.Image mould
Block 116 can have lens device 1161 and image sensor 1162, can be received by lens assembly 1161 and be believed from extraneous light
Number, and by image sensor 1162, such as metal-oxide complementary type phototransistor (CMOS) sensor or charge-coupled device
Part (CCD) sensor, converts optical signals to electric signal.Photographing module 116 can further have image processor (ISP)
1163, for aforementioned electric signal to be carried out processing correction, and it is converted into specific image format file, such as JPEG (joint figure
As panel of expert) image file, TIFF (label image file format) image file etc..Image file can be according to processor
105 and storage control 104 instruction, be sent to memory 103 and stored, or send and be sent to outside to RF circuit 112 and set
It is standby.
Exterior I/O port 111, which for terminal system 100 is physically entered module with other external equipments or system surfaces and provides, to be connect
Mouthful.Surface physics input module can be key, keyboard, turntable etc., such as volume button, power button, return key and
Camera button.Interface provided by exterior I/O port 111 may also include universal serial bus (USB) interface (may include USB,
Mini-USB, Micro-USB, USB Type-C etc.), thunder and lightning (Thunderbolt) interface, earphone microphone interface, transmission of video connect
Mouthful (such as high-definition multimedia HDMI interface, mobile high definition connect MHL interface), external storage interface (such as external storage
Card SD card interface), user identity module card (SIM card) interface etc..
Sensor module 118 can have one or more sensors or sensor array, including but not limited to: 1, position passes
Sensor, such as GPS (GPS) sensor, big-dipper satellite alignment sensor or lattice Luo Luosi (GLONASS) are defended
Star positioning system sensor is used for detection device current geographic position；2, acceleration transducer, gravity sensor, gyroscope are used
In detection device motion state and auxiliary positioning；3, light sensor, for detecting external ambient light；4, range sensor is used
In the distance of detection exterior object homologous ray；5, pressure sensor, the pressure condition for detection system contact；6, temperature with it is wet
Sensor is spent, for detecting environment temperature and humidity.Sensor module 118 can also be regarded using needs, add any other kind
The sensor or sensor array of class and quantity.
In some embodiment of the invention, the various components of terminal system 100 can be called by instruction by processor 105,
Execute the image pickup method of picture pick-up device of the invention.Processor 105 executes required for the image pickup method of picture pick-up device of the invention
Program stored by memory 103.
It is the introduction to the terminal system of the image pickup method of application picture pick-up device above, next, by picture pick-up device
Image pickup method is introduced.Referring to FIG. 2, for the flow chart of the image pickup method of picture pick-up device in the embodiment of the present invention, such as Fig. 2 institute
Show, this method comprises:
Step S101 obtains the current best exposure of first camera after the equipment enters shooting ready mode
Between light time, the optimum exposure time is that the longest when clarity of first camera shooting image meets preset requirement exposes
Between light time；
Step S102, in the best exposure of the optimum exposure time and the second camera of first camera prestored
In mapping table between light time, the target of the second camera corresponding with the current optimum exposure time is found out
Optimum exposure time；
Step S103, it is the current optimum exposure time that exposure time when first camera is shot, which is arranged,
And the exposure time being arranged when second camera shooting is the target optimum exposure time, so that first camera
It is shot according to the current optimum exposure time, the second camera according to the target optimum exposure time.
It should be noted that the picture pick-up device can be smart phone, tablet computer, camera or other with camera shooting
The equipment of head, this is not restricted.It can not only include the first camera and second camera on the picture pick-up device, it can be with
Including the even more camera of third camera.Third camera can be equally set using method provided in this embodiment
Exposure time, the quantity and type of camera on picture pick-up device are not limited herein.
Preferably, it is focal length camera that the first camera, which can be set, since focal length camera is compared to other kinds of
Camera is more sensitive to shaking, therefore tests the current optimum exposure time of focal length camera, and most according to the target of its lookup
The accuracy of good time for exposure is higher.Second camera can be black and white (MONO) camera or colour (RGB) camera.
In one embodiment, it includes the first camera, second camera and third camera shooting that picture pick-up device, which can be set,
Head.First camera is focal length camera, and second camera is black and white camera, and third camera is colour imagery shot.In advance
The mapping of the optimum exposure time and second camera and the optimum exposure time of third camera that are stored with the first camera is closed
It is table.By the current optimum exposure time of test focal length camera, to find out black and white camera and colour imagery shot difference
Target optimum exposure time, and be respectively set with this exposure time of each camera, Lai Shixian more preferably night scene shooting effect.
In the following, the specific implementation step of the image pickup method of picture pick-up device provided in this embodiment is discussed in detail in conjunction with Fig. 1:
Step S101 obtains the current best exposure of first camera after the equipment enters shooting ready mode
Between light time, the optimum exposure time is that the longest when clarity of first camera shooting image meets preset requirement exposes
Between light time.
Shooting ready mode in the present embodiment can be the preview mode of picture pick-up device, be also possible to opening for picture pick-up device
Mode (mode before being shot after picture pick-up device starting to picture pick-up device) is opened, can also be the sensor detection of picture pick-up device
The mode of gesture gripping is photographed to it, this is not restricted, also will not enumerate.
In the embodiment of the present application, it in the case where shooting ready mode is preview mode, can be set in preview mode
The preview image of display is obtained by second camera and/or third camera (since second camera is RGB camera shooting
Head, what is got is color image, therefore at least shows that the image that second camera obtains is preferably selection in preview image),
The picture effect of preview is influenced to avoid the test to the first camera.
For example, the first camera is focal length camera, and second camera is colour imagery shot, then picture pick-up device enters
After shooting ready mode, the picture of preview is the picture that colour imagery shot obtains.For another example assuming the first camera shooting of picture pick-up device
Head is focal length camera, and second camera is black and white camera, and third camera is colour imagery shot, then picture pick-up device enters bat
After taking the photograph ready mode, the picture of preview is picture after the image co-registration that colour imagery shot and black and white camera obtain.
Optimum exposure time in the present embodiment is to be able to satisfy preset requirement in the clarity of the image of camera shooting
In the case of, institute's attainable longest time for exposure.Preset requirement therein can be rule of thumb or market default clarity
Index determines.And test the current optimum exposure time of the first camera method can there are many, be set forth below two kinds
For:
The first, gradually shortens exposure time.
I.e. since initial exposure duration, during gradually shortening exposure time, the first camera is detected each
The clarity of image captured by exposure time, longest time for exposure when meeting preset requirement using clarity is as current best
Time for exposure.The maximum exposure time of a length of first camera when initial exposure can be set, to avoid actual optimum exposure
Time is greater than the problem that initial exposure time causes test inaccuracy occur.
For example, it is assumed that a length of 5s when the maximum exposure of the first camera, then user's opening picture pick-up device enters preview
After mode, the exposure time that the first camera is arranged in picture pick-up device automatically is 5s, and is calculated at this time using clarity evaluation algorithms
Whether the clarity for the image that the first camera obtains meets preset requirement.The current optimum exposure if meeting preset requirement
Time is 5s, sets 4.5s for the exposure time of the first camera if being unsatisfactory for preset requirement, and comment using clarity
Whether the clarity that valence algorithm calculates the image that the first camera obtains at this time again meets preset requirement, if meeting default want
Seeking then current optimum exposure time is 4.5s, sets the exposure time of the first camera to if being unsatisfactory for preset requirement
4s, line definition of going forward side by side calculate.Continue the length that exposure time is gradually reduced when clarity does not meet preset requirement in this way,
Until clarity meets preset requirement and just stops test, the exposure time being arranged when being just met for preset requirement with clarity is to work as
Preceding optimum exposure time.
Second, it is stepped up exposure time.
I.e. since initial exposure duration, during being stepped up exposure time, the first camera is detected each
The clarity of image captured by exposure time, longest time for exposure when meeting preset requirement using clarity is as current best
Time for exposure.The minimum exposure time of a length of first camera when initial exposure can be set, to avoid actual optimum exposure
Time is less than the problem that initial exposure time causes test inaccuracy occur.
For example, it is assumed that a length of 0.5s when the minimum exposure of the first camera, then user opens picture pick-up device and enters in advance
It lookes at after mode, the exposure time that the first camera is arranged in picture pick-up device automatically is 0.5s, and is calculated using clarity evaluation algorithms
Whether the clarity for the image that the first camera obtains at this time meets preset requirement.To camera if being unsatisfactory for preset requirement
It is adjusted or repairs, set 1s for the exposure time of the first camera if meeting preset requirement, and use clarity
Whether the clarity that evaluation algorithms calculate the image that the first camera obtains at this time again meets preset requirement, if be unsatisfactory for pre-
If the exposure time of the first camera is arranged if meeting preset requirement it is required that then current optimum exposure time is 0.5s
For 1.5s, line definition of going forward side by side is calculated.Continue the length that exposure time is stepped up when clarity meets preset requirement in this way,
Until clarity is unsatisfactory for preset requirement and just stops test, the exposure being once arranged when preset requirement is just unsatisfactory for clarity
Light time a length of current optimum exposure time.
Certainly, in the specific implementation process, the step-length for gradually shortening exposure time or increase exposure time can be according to need
It is arranged, is not limited to the example above, identical step-length can also not be used every time, this is not restricted.It is clear in the present embodiment
Clear degree evaluation algorithms also can according to need selection, such as details statistic algorithm, big data algorithm, neural network algorithm etc.,
This is also with no restriction.
Certainly, the method for the current optimum exposure time of the first camera of test is not limited to above two, can also basis
Need to carry out the selection of test method, this is not restricted.
Next, executing step S102, taken the photograph in the optimum exposure time of first camera prestored with described second
As the optimum exposure time of head mapping table in, find out corresponding with the current optimum exposure time described second
The target optimum exposure time of camera.
In the embodiment of the present application, the acquisition methods of mapping table can there are many, for example, by empirical value acquisition reflect
It penetrates relation table, calculate estimation acquisition mapping table by the camera parameter that camera producer provides, or test is obtained and reflected
Relation table is penetrated, this is not restricted.
Below by taking test obtains mapping table as an example, to introduce the acquisition of mapping table:
The best exposure of the optimum exposure time and second camera of the first camera is tested under a variety of jitter conditions first
Between light time.Then the optimum exposure time and second camera of the first camera of acquisition will be tested under same jitter conditions again
Optimum exposure time be established as a mapping relations, closed based on the corresponding mapping of every kind of jitter conditions in a variety of jitter conditions
System generates mapping table.
For example, it is assumed that the first camera of picture pick-up device is focal length camera, and second camera is black and white camera,
Third camera is colour imagery shot.In laboratory environments, the first jitter conditions are set by test equipment, then surveyed respectively
It tries out under the first jitter conditions, the optimum exposure time b1 of the optimum exposure time a1 of focal length camera, black and white camera, and
The optimum exposure time c1 of colour imagery shot.The second jitter conditions are set by test equipment, are then tested out respectively second
Under jitter conditions, the optimum exposure time a2 of focal length camera, the optimum exposure time b2 of black and white camera and colour imagery shot
Optimum exposure time c2.Third jitter conditions are set by test equipment, are then tested out under third jitter conditions respectively,
Optimum exposure time a3, the optimum exposure time b3 of black and white camera and the optimum exposure of colour imagery shot of focal length camera
Time c3.
Focal length camera a1, black and white camera b1 and colour imagery shot c1 are established as first mapping relations, by focal length
Camera a2, black and white camera b2 and colour imagery shot c2 are established as Article 2 mapping relations, and focal length camera a3, black and white are taken the photograph
As head b3 and colour imagery shot c3 are established as Article 3 mapping relations.Comprehensive each mapping relations generate mapping table.
Specifically, mapping table is obtained by laboratory test, is obtained compared to by empirical value or calculating estimation
Mapping table, data are more acurrate in table, more meet the actual conditions of each camera, can improve acquisition of tabling look-up second is taken the photograph
As the accuracy of the target optimum exposure time of head, to improve the quality of subsequent shooting picture.
It after obtaining mapping table, is stored in picture pick-up device, can be obtained according to test in order to subsequent
The current optimum exposure time of first camera, which is tabled look-up, finds out the target optimum exposure time of corresponding second camera.
Illustrate the method for searching mapping table: assuming that it is current most to test out focal length camera in step s101
The good time for exposure is a2, then corresponding to search the mapping table established before, can be searched according to Article 2 mapping relations therein
Target optimum exposure time to corresponding black and white camera is b2, and the target optimum exposure time of corresponding colour imagery shot is
c2。
Step S103, it is the current optimum exposure time that exposure time when first camera is shot, which is arranged,
And exposure time when second camera shooting is arranged is the target optimum exposure time.
The method for illustrating setting camera exposure time: assuming that the first camera of picture pick-up device is focal length camera shooting
Head, second camera are black and white camera, and third camera is colour imagery shot.Testing out current best of focal length camera
Time for exposure is a2, and searches mapping table and determine that the target optimum exposure time of corresponding black and white camera is b2, right
After the target optimum exposure time for the colour imagery shot answered is c2, picture pick-up device automatically sets the exposure time of focal length camera
It is set to a2, set the exposure time of black and white camera to b2, sets c2 for the exposure time of colour imagery shot.
It should also be noted that, picture pick-up device can be set after the new ready mode into shooting every time, all re-execute
Abovementioned steps S101~S103 tests, tables look-up and be provided the exposure time of each camera, can be applicable in different shakes
Situation and different shooting environmentals guarantee that the exposure time for each camera being arranged automatically when shooting every time is all optimal most suitable
In current scene and active user's jitter conditions, so ensure the image that shooting obtains every time clarity and brightness compared with
It is excellent, high quality graphic can be obtained under night scene photographed scene.
Specifically, by preset the first camera optimum exposure time and second camera optimum exposure when
Between mapping table first test out the current best exposure of the first camera and after picture pick-up device enters shooting ready mode
Between light time, the target optimum exposure time of corresponding second camera is found out further according to mapping table, is worked as so as to basis
Preceding test result and checking result are arranged the exposure time of each camera.It can be according to the current shooting of picture pick-up device with realization
The exposure time of each camera is targetedly arranged in state, and the brightness of shooting photo is improved on the basis of guaranteeing clarity.
In another embodiment, the embodiment of the present application also provides the corresponding dresses of the image pickup method of above-mentioned picture pick-up device
It sets.As shown in figure 3, providing a kind of filming apparatus of picture pick-up device, the equipment includes the first camera and second camera,
Described device includes:
Test module 201, it is current for after the equipment enters shooting ready mode, obtaining first camera
Optimum exposure time, the optimum exposure time are that first camera is shot when the clarity of image meets preset requirement
The longest time for exposure；
Searching module 202, for the optimum exposure time and the second camera in first camera prestored
Optimum exposure time mapping table in, find out it is corresponding with the current optimum exposure time it is described second camera shooting
The target optimum exposure time of head；
Shooting module 203 is the current best exposure for exposure time when first camera shooting is arranged
Exposure time between light time, and when second camera shooting is arranged is the target optimum exposure time, so that described the
One camera is clapped according to the current optimum exposure time, the second camera according to the target optimum exposure time
It takes the photograph.
In the embodiment of the present application, the first camera is focal length camera, and second camera is black and white camera or colour
Camera.
By the device that present embodiment is introduced, dress used by the image pickup method to implement the picture pick-up device of the application
It sets, so based on method described above, the affiliated personnel in this field can understand specific structure and the deformation of the device, so
Details are not described herein.Device used by the image pickup method of all picture pick-up devices provided in this embodiment belongs to the present invention and is intended to
The range of protection.
In another embodiment, the embodiment of the present application also provides the corresponding electricity of the image pickup method of above-mentioned picture pick-up device
Sub- equipment.As shown in figure 4, provide a kind of electronic equipment, including memory 310, processor 320 and it is stored in memory 310
Computer program 311 that is upper and can running on the processor 320, the processor 320 execute real when the computer program 311
Existing following steps:
After the equipment enters shooting ready mode, the current optimum exposure time of first camera, institute are obtained
State the longest time for exposure when clarity that optimum exposure time is first camera shooting image meets preset requirement；
In the optimum exposure time of the optimum exposure time and second camera of first camera prestored
In mapping table, the target optimum exposure of the second camera corresponding with the current optimum exposure time is found out
Time；
Exposure time when first camera shooting is arranged is the current optimum exposure time, and described in setting
Exposure time when second camera is shot is the target optimum exposure time, so that first camera is worked as according to described
Preceding optimum exposure time, the second camera are shot according to the target optimum exposure time.
In embodiments of the present invention, the present invention may be implemented when the processor 320 executes the computer program 311 to mention
Any embodiment in the image pickup method of the picture pick-up device of confession.
By the electronic equipment that present embodiment is introduced, used to implement the image pickup method of picture pick-up device of the application
Equipment, so the affiliated personnel in this field can understand specific structure and the deformation of the equipment based on method described above,
So details are not described herein.Device used by the image pickup method of all picture pick-up devices provided in this embodiment belongs to the present invention
The range to be protected.
In another embodiment, it deposits the embodiment of the present application also provides the image pickup method of above-mentioned picture pick-up device is corresponding
Storage media.As shown in figure 5, providing a kind of computer readable storage medium 400, it is stored thereon with computer program 411, it is special
Sign is that the computer program 411 performs the steps of when being executed by processor
After the equipment enters shooting ready mode, the current optimum exposure time of first camera, institute are obtained
State the longest time for exposure when clarity that optimum exposure time is first camera shooting image meets preset requirement；
In the optimum exposure time of the optimum exposure time and second camera of first camera prestored
In mapping table, the target optimum exposure of the second camera corresponding with the current optimum exposure time is found out
Time；
Exposure time when first camera shooting is arranged is the current optimum exposure time, and described in setting
Exposure time when second camera is shot is the target optimum exposure time, so that first camera is worked as according to described
Preceding optimum exposure time, the second camera are shot according to the target optimum exposure time.
In the specific implementation process, when which is executed by processor, provided by the invention take the photograph may be implemented
As equipment image pickup method in any embodiment.
The technical solution provided in the embodiment of the present invention, has at least the following technical effects or advantages:
Image pickup method, device, equipment and the medium of picture pick-up device provided in an embodiment of the present invention, preset the first camera shooting
The mapping table of the optimum exposure time of the optimum exposure time and second camera of head, and enter shooting standard in picture pick-up device
After standby mode, the current optimum exposure time of the first camera is first tested out, finds out corresponding the further according to mapping table
The target optimum exposure time of two cameras, so that the exposure of each camera be arranged according to current test result and checking result
Light time is long.To realize the exposure time that each camera can targetedly be arranged according to the current shooting state of picture pick-up device,
Guarantee to improve the brightness for shooting photo on the basis of clarity.
Algorithm and display are not inherently related to any particular computer, virtual system, or other device provided herein.
Various general-purpose systems can also be used together with teachings based herein.As described above, it constructs required by this kind of system
Structure be obvious.In addition, the present invention is also not directed to any particular programming language.It should be understood that can use various
Programming language realizes summary of the invention described herein, and the description done above to language-specific is to disclose this hair
Bright preferred forms.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself
All as a separate embodiment of the present invention.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose
It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments in this include institute in other embodiments
Including certain features rather than other feature, but the combination of the feature of different embodiment means in the scope of the present invention
Within and form different embodiments.For example, in the following claims, embodiment claimed it is any it
One can in any combination mode come using.
Various component embodiments of the invention can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
Microprocessor or digital signal processor (DSP) realize gateway according to an embodiment of the present invention, proxy server, in system
Some or all components some or all functions.The present invention is also implemented as executing side as described herein
Some or all device or device programs (for example, computer program and computer program product) of method.It is such
It realizes that program of the invention can store on a computer-readable medium, or can have the shape of one or more signal
Formula.Such signal can be downloaded from an internet website to obtain, and perhaps be provided on the carrier signal or with any other shape
Formula provides.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Component or step listed in the claims.Word "a" or "an" before component does not exclude the presence of multiple such
Component.The present invention can be by means of including the hardware of several different components and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame
Claim.
Claims (10)
1. a kind of image pickup method of picture pick-up device, which is characterized in that the equipment includes the first camera and second camera, institute
The method of stating includes:
After the equipment enters shooting ready mode, obtain the current optimum exposure time of first camera, it is described most
The good time for exposure meets longest time for exposure when preset requirement for the clarity that first camera shoots image；
In the mapping of the optimum exposure time of the optimum exposure time and second camera of first camera prestored
In relation table, when finding out the target optimum exposure of the second camera corresponding with the current optimum exposure time
Between；
Exposure time when first camera shooting is arranged is the current optimum exposure time, and is arranged described second
Exposure time when camera is shot is the target optimum exposure time, so that first camera is according to described current
Optimum exposure time, the second camera are shot according to the target optimum exposure time.
2. the method as described in claim 1, which is characterized in that first camera is focal length camera, and described second takes the photograph
As head is black and white camera or colour imagery shot.
3. the method as described in claim 1, which is characterized in that described when obtaining the current optimum exposure of first camera
Between, comprising:
Since initial exposure duration, during gradually changing the exposure time, first camera is detected every
The clarity of a acquired image of exposure time, longest time for exposure when meeting the preset requirement using the clarity as
The current optimum exposure time.
4. method as claimed in claim 3, which is characterized in that the maximum of a length of first camera when the initial exposure
Time for exposure or minimum exposure time.
5. the method as described in claim 1, which is characterized in that the optimum exposure time of first camera and described second
The mapping table of the optimum exposure time of camera is obtained at least through following steps:
The best exposure of the optimum exposure time and the second camera of first camera is tested under a variety of jitter conditions
Between light time；
The optimum exposure time and the second camera of first camera of acquisition will be tested under same jitter conditions
Optimum exposure time be established as a mapping relations, generate the mapping pass based on the corresponding mapping relations of every kind of jitter conditions
It is table.
6. the method as described in claim 1, which is characterized in that the shooting ready mode is preview mode, the preview mould
The preview image shown in formula is obtained by the second camera.
7. a kind of filming apparatus of picture pick-up device, which is characterized in that the equipment includes the first camera and second camera, institute
Stating device includes:
Test module, for obtaining the current best exposure of first camera after the equipment enters shooting ready mode
Between light time, the optimum exposure time is that the longest when clarity of first camera shooting image meets preset requirement exposes
Between light time；
Searching module, the best exposure for optimum exposure time and the second camera in first camera prestored
In mapping table between light time, the target of the second camera corresponding with the current optimum exposure time is found out
Optimum exposure time；
Shooting module is the current optimum exposure time for exposure time when first camera shooting is arranged,
And the exposure time being arranged when second camera shooting is the target optimum exposure time, so that first camera
It is shot according to the current optimum exposure time, the second camera according to the target optimum exposure time.
8. device as claimed in claim 7, which is characterized in that first camera is focal length camera, and described second takes the photograph
As head is black and white camera or colour imagery shot.
9. a kind of electronic equipment including memory, processor and stores the calculating that can be run on a memory and on a processor
Machine program, which is characterized in that the processor performs the steps of when executing described program
After the equipment enters shooting ready mode, obtain the current optimum exposure time of first camera, it is described most
The good time for exposure meets longest time for exposure when preset requirement for the clarity that first camera shoots image；
In the mapping of the optimum exposure time of the optimum exposure time and second camera of first camera prestored
In relation table, when finding out the target optimum exposure of the second camera corresponding with the current optimum exposure time
Between；
Exposure time when first camera shooting is arranged is the current optimum exposure time, and is arranged described second
Exposure time when camera is shot is the target optimum exposure time, so that first camera is according to described current
Optimum exposure time, the second camera are shot according to the target optimum exposure time.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
It is performed the steps of when execution
After the equipment enters shooting ready mode, obtain the current optimum exposure time of first camera, it is described most
The good time for exposure meets longest time for exposure when preset requirement for the clarity that first camera shoots image；
In the mapping of the optimum exposure time of the optimum exposure time and second camera of first camera prestored
In relation table, when finding out the target optimum exposure of the second camera corresponding with the current optimum exposure time
Between；
Exposure time when first camera shooting is arranged is the current optimum exposure time, and is arranged described second
Exposure time when camera is shot is the target optimum exposure time, so that first camera is according to described current
Optimum exposure time, the second camera are shot according to the target optimum exposure time.
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| CN201811624873.4A CN109547703B (en) | 2018-12-28 | 2018-12-28 | Shooting method and device of camera equipment, electronic equipment and medium |
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|---|---|---|---|
| CN201811624873.4A CN109547703B (en) | 2018-12-28 | 2018-12-28 | Shooting method and device of camera equipment, electronic equipment and medium |
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| CN109547703B (en) | 2021-04-13 |
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