CN107995431A - A kind of filming apparatus and method - Google Patents
A kind of filming apparatus and method Download PDFInfo
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- CN107995431A CN107995431A CN201610946760.0A CN201610946760A CN107995431A CN 107995431 A CN107995431 A CN 107995431A CN 201610946760 A CN201610946760 A CN 201610946760A CN 107995431 A CN107995431 A CN 107995431A
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Classifications
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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
-
- 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
-
- 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
- H04N23/62—Control of parameters via user interfaces
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses a kind of filming apparatus and method, which includes：First acquisition module and taking module.First acquisition module obtains the first acquisition parameters of preview image；Wherein the first acquisition parameters include the first shutter speed；Taking module uses the second acquisition parameters for including the second shutter speed to be shot, wherein, the second shutter speed is less than the first shutter speed.Pass through the scheme of the embodiment of the present invention, it is possible to increase the preview experience of user, and ensure that preview image is consistent with shooting the picture effect of photo.
Description
Technical field
The present invention relates to technique for taking field, more particularly to a kind of filming apparatus and method.
Background technology
At present, when the terminal with shooting function is shot, the data of preview image and final photographed data meeting
Using identical exposure parameter, to realize the finding purpose consistent with income effect.For example, in camera preview, each preview
The exposure parameter of frame is sensitivity ISO400, the time for exposure is 1/100 second (S), is then shot, ultimately produces same parameter
Photo.The photo and the effect of preview image so shot is basically identical.But this process is for long exposure
Will be there are problem, if for example, current environment, which will reach the rational exposure effect time, needs 8S, then come from preview angle
See, so that ensure that preview image is consistent with shooting the picture effect of photo, it can refresh an interface, this overlength per 8S
Delay can give etc. user to be captured bring very poor viewing experience.
The content of the invention
It is a primary object of the present invention to propose a kind of filming apparatus and method, it is possible to increase the preview experience of user, and
And ensure that preview image is consistent with shooting the picture effect of photo.
To achieve the above object, the present invention provides a kind of filming apparatus, the device to include：First acquisition module and shooting
Module.
First acquisition module, for obtaining the first acquisition parameters of preview image；Wherein the first acquisition parameters include first
Shutter speed.
Taking module, for being shot using the second acquisition parameters for including the second shutter speed, wherein, the second shutter
Speed is less than the first shutter speed.
Alternatively, which further includes computing module and the second acquisition module.
Computing module, for calculating the exposure of preview image according to the first acquisition parameters before taking module is shot
Value.
Second acquisition module, for keeping the exposure value is constant to obtain the second acquisition parameters.
Alternatively,
First shutter speed refers to that shutter starts the shutter that the time is t1 and starts speed；T1 ＜ 1/4s.
Second shutter speed refers to that shutter starts the shutter that the time is t2 and starts speed；t2≥1/4s.
Alternatively, the first acquisition parameters further include：First f-number and the first sensitivity.
The exposure value that computing module calculates preview image according to the first acquisition parameters includes：
The corresponding first shutter series of first shutter speed, the first f-number pair are obtained according to default exposure value mapping table
The the first aperture series answered and the corresponding first photosensitive series of the first sensitivity.
First shutter series, first the first photosensitive series of aperture sum of series are substituted into following first calculating formula and calculates the exposure
Light value：
EV=F+T+I；
Wherein, EV is exposure value, and F is aperture series, and T is shutter series, and I is photosensitive series.
Alternatively, photosensitive series is minimum series.
Alternatively, the second acquisition parameters further include：Second f-number and the second sensitivity.
Second acquisition module keeps constant second acquisition parameters that obtain of exposure value to include：
The corresponding second shutter series of second shutter speed is obtained according to default exposure value mapping table.
The sum of second aperture series and the second photosensitive series are obtained according to the first calculating formula and the second shutter series.
Second aperture is obtained according to default exposure value mapping table and the sum of the second aperture series and the second photosensitive series
One or more parameter combinations of value and the second sensitivity.
Using any one parameter combination in one or more parameter combinations as the second acquisition parameters.
In addition, to achieve the above object, present invention also offers a kind of image pickup method, this method includes：
Obtain the first acquisition parameters of preview image；Wherein the first acquisition parameters include the first shutter speed.
Shot using the second acquisition parameters including the second shutter speed, wherein, the second shutter speed is less than first
Shutter speed.
Alternatively, this method further includes：
The exposure value of preview image is calculated according to the first acquisition parameters before being shot.
Keep the exposure value is constant to obtain the second acquisition parameters.
Alternatively,
First shutter speed refers to that shutter starts the shutter that the time is t1 and starts speed；T1 ＜ 1/4s.
Second shutter speed refers to that shutter starts the shutter that the time is t2 and starts speed；t2≥1/4s.
Alternatively, the first acquisition parameters further include：First f-number and the first sensitivity.
The exposure value of preview image is calculated according to the first acquisition parameters to be included：
The corresponding first shutter series of first shutter speed, the first f-number pair are obtained according to default exposure value mapping table
The the first aperture series answered and the corresponding first photosensitive series of the first sensitivity.
First shutter series, first the first photosensitive series of aperture sum of series are substituted into following first calculating formula and calculates exposure
Value：
EV=F+T+I；
Wherein, EV is exposure value, and F is aperture series, and T is shutter series, and I is photosensitive series.
Alternatively, photosensitive series is minimum series.
Alternatively, the second acquisition parameters further include：Second f-number and the second sensitivity.
Constant second acquisition parameters that obtain of exposure value are kept to include：
The corresponding second shutter series of second shutter speed is obtained according to default exposure value mapping table.
The sum of second aperture series and the second photosensitive series are obtained according to the first calculating formula and the second shutter series.
Second aperture is obtained according to default exposure value mapping table and the sum of the second aperture series and the second photosensitive series
One or more parameter combinations of value and the second sensitivity.
Using any one parameter combination in one or more parameter combinations as the second acquisition parameters.
The present invention proposes a kind of filming apparatus and method, which includes：First acquisition module and taking module.First
Acquisition module obtains the first acquisition parameters of preview image；Wherein the first acquisition parameters include the first shutter speed；Taking module
Shot using the second acquisition parameters including the second shutter speed, wherein, the second shutter speed is less than the first shutter speed.
Pass through the scheme of the embodiment of the present invention, it is possible to increase the preview experience of user, and ensure preview image with shooting the picture of photo
Face effect is consistent.
Brief description of the drawings
Fig. 1 is the hardware architecture diagram for realizing each optional mobile terminal of embodiment one of the present invention；
Fig. 2 is the wireless communication system schematic diagram of mobile terminal as shown in Figure 1；
Fig. 3 is the filming apparatus composition frame chart of the embodiment of the present invention；
Fig. 4 is the image pickup method flow chart of the embodiment of the present invention；
Fig. 5 is the image pickup method schematic diagram of the embodiment of the present invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
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.
Describe to realize each one optional mobile terminal of embodiment of the present invention referring now to attached drawing.In follow-up description
In, using the suffix of such as " module ", " component " or " unit " for representing element only for being conducive to the explanation of the present invention,
Itself do not have specific meaning.Therefore, " module " can be used mixedly with " component ".
Mobile terminal can be implemented in a variety of manners.For example, terminal described in the present invention can include such as moving
Phone, smart phone, laptop, digit broadcasting receiver, PDA (personal digital assistant), PAD (tablet computer), PMP
The mobile terminal of (portable media player), guider etc. and such as numeral TV, desktop computer etc. are consolidated
Determine terminal.Hereinafter it is assumed that terminal is mobile terminal.However, it will be understood by those skilled in the art that except being used in particular for moving
Outside the element of purpose, construction according to the embodiment of the present invention can also apply to the terminal of fixed type.
Fig. 1 is the hardware configuration signal for the mobile terminal for realizing each embodiment of the present invention.
Mobile terminal 100 can include wireless communication unit 110, A/V (audio/video) input unit 120, user's input
Unit 130, sensing unit 140, output unit 150, memory 160, interface unit 170, controller 180 and power supply unit 190
Etc..Fig. 1 shows the mobile terminal with various assemblies, it should be understood that being not required for implementing all groups shown
Part.More or fewer components can alternatively be implemented.The element of mobile terminal will be discussed in more detail below.
Wireless communication unit 110 generally includes one or more assemblies, it allows mobile terminal 100 and wireless communication system
Or the radio communication between network.For example, wireless communication unit can include broadcasting reception module 111, mobile communication module
112nd, it is at least one in wireless Internet module 113, short range communication module 114 and location information module 115.
Broadcasting reception module 111 receives broadcast singal and/or broadcast via broadcast channel from external broadcast management server
Relevant information.Broadcast channel can include satellite channel and/or terrestrial channel.Broadcast management server can be generated and sent
The broadcast singal and/or broadcast related information that the server or reception of broadcast singal and/or broadcast related information generate before
And send it to the server of terminal.Broadcast singal can include TV broadcast singals, radio signals, data broadcasting
Signal etc..Moreover, broadcast singal may further include the broadcast singal combined with TV or radio signals.Broadcast phase
Closing information can also provide via mobile communications network, and in this case, broadcast related information can be by mobile communication mould
Block 112 receives.Broadcast singal can exist in a variety of manners, for example, it can be with the electronics of digital multimedia broadcasting (DMB)
Program guide (EPG), digital video broadcast-handheld (DVB-H) electronic service guidebooks (ESG) etc. form and exist.Broadcast
Receiving module 111 can receive signal broadcast by using various types of broadcast systems.Especially, broadcasting reception module 111
Can be wide by using such as multimedia broadcasting-ground (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video
Broadcast-hold (DVB-H), forward link media (MediaFLO@) Radio Data System, received terrestrial digital broadcasting integrated service
(ISDB-T) etc. digit broadcasting system receives digital broadcasting.Broadcasting reception module 111, which may be constructed such that, to be adapted to provide for extensively
Broadcast the various broadcast systems of signal and above-mentioned digit broadcasting system.Via broadcasting reception module 111 receive broadcast singal and/
Or broadcast related information can be stored in memory 160 (or other types of storage medium).
Mobile communication module 112 sends radio signals to base station (for example, access point, node B etc.), exterior terminal
And at least one in server and/or receive from it radio signal.Such radio signal can lead to including voice
Talk about signal, video calling signal or the various types of data for sending and/or receiving according to text and/or Multimedia Message.
Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal.The module can be internally or externally
It is couple to terminal.Wi-Fi (Wireless Internet Access) technology involved by the module can include WLAN (Wireless LAN) (Wi-Fi), Wibro
(WiMAX), Wimax (worldwide interoperability for microwave accesses), HSDPA (high-speed downlink packet access) etc..
Short range communication module 114 is the module for supporting junction service.Some examples of short-range communication technology include indigo plant
ToothTM, radio frequency identification (RFID), Infrared Data Association (IrDA), ultra wide band (UWB), purple honeybeeTMEtc..
Location information module 115 is the module for checking or obtaining the positional information of mobile terminal.Location information module
Typical case be GPS (global positioning system).According to current technology, GPS module 115 calculates and comes from three or more satellites
Range information and correct time information and for the Information application triangulation of calculating so that according to longitude, latitude
Highly accurately calculate three-dimensional current location information.Currently, defended for the method for calculation position and temporal information using three
Star and the position calculated by using other satellite correction and the error of temporal information.In addition, GPS module 115
Can be by Continuous plus current location information in real time come calculating speed information.
A/V input units 120 are used to receive audio or video signal.A/V input units 120 can include 121 He of camera
Microphone 1220, camera 121 in video acquisition mode or image capture mode by image capture apparatus obtain static map
The view data of piece or video is handled.Picture frame after processing may be displayed on display unit 151.At camera 121
Picture frame after reason can be stored in memory 160 (or other storage mediums) or be carried out via wireless communication unit 110
Send, two or more cameras 1210 can be provided according to the construction of mobile terminal.Microphone 122 can be in telephone relation mould
Sound (voice data) is received via microphone in formula, logging mode, speech recognition mode etc. operational mode, and can be incited somebody to action
Such acoustic processing is voice data.Audio (voice) data after processing can be changed in the case of telephone calling model
For the output of the form of mobile communication base station can be sent to via mobile communication module 112.Microphone 122 can implement all kinds
Noise eliminate (or suppress) algorithm with eliminate noise that (or suppression) produce during receiving and sending audio signal or
Person disturbs.
User input unit 130 can generate key input data to control each of mobile terminal according to order input by user
Kind operation.User input unit 130 allows user to input various types of information, and can include keyboard, metal dome, touch
Plate (for example, sensitive component of detection change of resistance, pressure, capacitance etc. caused by by contact), roller, rocking bar etc.
Deng.Especially, when touch pad is superimposed upon on display unit 151 in the form of layer, touch-screen can be formed.
Sensing unit 140 detects the current state of mobile terminal 100, (for example, mobile terminal 100 opens or closes shape
State), the presence or absence of the contact (that is, touch input) of the position of mobile terminal 100, user for mobile terminal 100, mobile terminal
100 orientation, the acceleration or deceleration movement of mobile terminal 100 and direction etc., and generate and be used to control mobile terminal 100
The order of operation or signal.For example, when mobile terminal 100 is embodied as sliding-type mobile phone, sensing unit 140 can sense
The sliding-type phone is opening or closing.In addition, sensing unit 140 can detect power supply unit 190 whether provide electric power or
Whether person's interface unit 170 couples with external device (ED).Sensing unit 140, which can include proximity sensor 1410, to be combined below
Touch-screen is described this.
Interface unit 170 is connected the interface that can pass through as at least one external device (ED) with mobile terminal 100.For example,
External device (ED) can include wired or wireless head-band earphone 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..Identification module can be that storage is used to verify that user uses each of mobile terminal 100
Plant information and subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) can be included
Etc..In addition, the device with identification module can (hereinafter referred to as " identification device ") take the form of smart card, therefore, know
Other device can be connected via port or other attachment devices with mobile terminal 100.Interface unit 170 can be used for reception and come from
The input (for example, data message, electric power etc.) of external device (ED) and the input received is transferred in mobile terminal 100
One or more elements can be used for transmitting data between mobile terminal and external device (ED).
In addition, when mobile terminal 100 is connected with external base, interface unit 170 may be used as allowing by it by electricity
Power provides to the path of mobile terminal 100 from base or may be used as allowing to pass through it from the various command signals that base inputs
It is transferred to the path of mobile terminal.It may be used as being used to identify that mobile terminal is from the various command signals or electric power of base input
The no signal being accurately fitted within base.Output unit 150 is configured to provide with vision, audio and/or tactile manner defeated
Go out signal (for example, audio signal, vision signal, alarm signal, vibration signal etc.).Output unit 150 can include display
Unit 151, dio Output Modules 152, alarm unit 153 etc..
Display unit 151 may be displayed in mobile terminal 100 information handled.For example, when mobile terminal 100 is in electricity
When talking about call mode, display unit 151 can be shown with conversing or other communicating (for example, text messaging, multimedia file
Download etc.) relevant user interface (UI) or graphic user interface (GUI).When mobile terminal 100 is in video calling pattern
Or during image capture mode, display unit 151 can show the image of capture and/or the image of reception, show video or figure
UI or GUI of picture and correlation function etc..
Meanwhile when display unit 151 and touch pad in the form of layer it is superposed on one another to form touch-screen when, display unit
151 may be used as input unit and output device.Display unit 151 can include liquid crystal display (LCD), thin film transistor (TFT)
In LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display, flexible display, three-dimensional (3D) display etc. at least
It is a kind of.Some in these displays may be constructed such that transparence to allow user to be watched from outside, this is properly termed as transparent
Display, typical transparent display can be, for example, TOLED (transparent organic light emitting diode) display etc..According to specific
Desired embodiment, mobile terminal 100 can include two or more display units (or other display devices), for example, moving
Dynamic terminal can include outernal display unit (not shown) and inner display unit (not shown).Touch-screen can be used for detection to touch
Input pressure and touch input position and touch input area.
Dio Output Modules 152 can mobile terminal be in call signal reception pattern, call mode, logging mode,
Speech recognition mode, broadcast reception mode are receiving or in memory 160 by wireless communication unit 110 when under isotype
The voice data transducing audio signal of middle storage and to export be sound.Moreover, dio Output Modules 152 can provide and movement
The relevant audio output of specific function (for example, call signal receives sound, message sink sound etc.) that terminal 100 performs.
Dio Output Modules 152 can include loudspeaker, buzzer etc..
Alarm unit 153 can provide output notifying event to mobile terminal 100.Typical event can be with
Including calling reception, message sink, key signals input, touch input etc..In addition to audio or video exports, alarm unit
153 can provide output in a different manner with the generation of notification event.For example, alarm unit 153 can be in the form of vibration
Output is provided, when receiving calling, message or some other entrance communications (incomingcommunication), alarm list
Member 153 can provide tactile output (that is, vibrating) to notify to user.Exported by tactile as offer, even in
When the mobile phone of user is in the pocket of user, user also can recognize that the generation of various events.Alarm unit 153
The output of the generation of notification event can be provided via display unit 151 or dio Output Modules 152.
Memory 160 can store software program of the processing performed by controller 180 and control operation etc., Huo Zheke
Temporarily to store oneself data (for example, telephone directory, message, still image, video etc.) through exporting or will export.And
And memory 160 can store the vibration of various modes on being exported when touching and being applied to touch-screen and audio signal
Data.
Memory 160 can include the storage medium of at least one type, and the storage medium includes flash memory, hard disk, more
Media card, card-type memory (for example, SD or DX memories etc.), random access storage device (RAM), static random-access storage
Device (SRAM), read-only storage (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read only memory
(PROM), magnetic storage, disk, CD etc..Moreover, mobile terminal 100 can be with performing memory by network connection
The network storage device cooperation of 160 store function.
Controller 180 usually controls the overall operation of mobile terminal.For example, controller 180 performs and voice communication, data
Communication, video calling etc. relevant control and processing.In addition, controller 180 can include being used to reproduce (or playback) more matchmakers
The multi-media module 1810 of volume data, multi-media module 1810 can be constructed in controller 180, or be can be structured as and controlled
Device 180 processed separates.Controller 180 can be with execution pattern identifying processing, by the handwriting input performed on the touchscreen or figure
Piece draws input and is identified as character or image.
Power supply unit 190 receives external power or internal power under the control of controller 180 and provides operation each member
Appropriate electric power needed for part and component.
Various embodiments described herein can with using such as computer software, hardware or any combination thereof calculating
Machine computer-readable recording medium is implemented.Implement for hardware, embodiment described herein can be by using application-specific IC
(ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), scene can
Programming gate array (FPGA), processor, controller, microcontroller, microprocessor, be designed to perform function described herein
At least one of electronic unit is implemented, and in some cases, such embodiment can be implemented in controller 180.
For software implementation, the embodiment of such as process or function can be with allowing to perform the single of at least one functions or operations
Software module is implemented.Software code can by the software application (or program) write with any appropriate programming language Lai
Implement, software code can be stored in memory 160 and be performed by controller 180.
So far, oneself according to its function through describing mobile terminal.In the following, for the sake of brevity, will description such as folded form,
Slide type mobile terminal in various types of mobile terminals of board-type, oscillating-type, slide type mobile terminal etc., which is used as, to be shown
Example.Therefore, the present invention can be applied to any kind of mobile terminal, and be not limited to slide type mobile terminal.
Mobile terminal 100 as shown in Figure 1 may be constructed such that using via frame or packet transmission data it is all if any
Line and wireless communication system and satellite-based communication system operate.
The communication system that can be operated referring now to Fig. 2 descriptions mobile terminal wherein according to the present invention.
Such communication system can use different air interface and/or physical layer.For example, used by communication system
Air interface includes such as frequency division multiple access (FDMA), time division multiple acess (TDMA), CDMA (CDMA) and universal mobile communications system
System (UMTS) (especially, Long Term Evolution (LTE)), global system for mobile communications (GSM) etc..As non-limiting example, under
The description in face is related to cdma communication system, but such teaching is equally applicable to other types of system.
With reference to figure 2, cdma wireless communication system can include multiple mobile terminals 100, multiple base stations (BS) 270, base station
Controller (BSC) 275 and mobile switching centre (MSC) 280.MSC280 is configured to and Public Switched Telephony Network (PSTN)
290 form interface.MSC280 is also structured to form interface with the BSC275 that can be couple to base station 270 via back haul link.
Back haul link can be constructed according to any of some known interfaces, and the interface includes such as E1/T1, ATM, IP,
PPP, frame relay, HDSL, ADSL or xDSL.It will be appreciated that system can include multiple BSC2750 as shown in Figure 2.
Each BS270 can service one or more subregions (or region), by multidirectional antenna or the day of direction specific direction
Each subregion of line covering is radially away from BS270.Alternatively, each subregion can be by two or more for diversity reception
Antenna covers.Each BS270, which may be constructed such that, supports multiple frequency distribution, and each frequency distribution has specific frequency spectrum
(for example, 1.25MHz, 5MHz etc.).
What subregion and frequency were distributed, which intersects, can be referred to as CDMA Channel.BS270 can also be referred to as base station transceiver
System (BTS) or other equivalent terms.In this case, term " base station " can be used for broadly representing single
BSC275 and at least one BS270.Base station can also be referred to as " cellular station ".Alternatively, each subregion of specific BS270 can be claimed
For multiple cellular stations.
As shown in Figure 2, broadcast singal is sent to the mobile terminal operated in system by broadcsting transmitter (BT) 295
100.Broadcasting reception module 111 as shown in Figure 1 is arranged at mobile terminal 100 to receive the broadcast sent by BT295
Signal.In fig. 2 it is shown that several global positioning system (GPS) satellites 300.Satellite 300 helps to position multiple mobile terminals
It is at least one in 100.
In fig. 2, multiple satellites 300 are depicted, it is understood that, any number of satellite can be utilized to obtain useful
Location information.GPS module 115 as shown in Figure 1 is generally configured to coordinate with satellite 300 to be believed with obtaining desired positioning
Breath.Substitute GPS tracking techniques or outside GPS tracking techniques, the other of the position that can track mobile terminal can be used
Technology.In addition, at least one gps satellite 300 can optionally or additionally handle satellite dmb transmission.
As a typical operation of wireless communication system, BS270 receives the reverse link from various mobile terminals 100
Signal.Mobile terminal 100 usually participates in call, information receiving and transmitting and other types of communication.Certain base station 270 receives each anti-
Handled to link signal in specific BS270.The data of acquisition are forwarded to relevant BSC275.BSC provides call
Resource allocation and the mobile management function of coordination including the soft switching process between BS270.The number that BSC275 will also be received
According to MSC280 is routed to, it provides the extra route service for being used for that interface to be formed with PSTN290.Similarly, PSTN290 with
MSC280 forms interface, and MSC and BSC275 form interface, and BSC275 correspondingly controls BS270 with by forward link signals
It is sent to mobile terminal 100.
Based on above-mentioned optional mobile terminal hardware configuration and communication system, each embodiment of the method for the present invention is proposed.
At present, when the terminal with shooting function is shot, the data of preview image and final photographed data meeting
Using identical exposure parameter, to realize the finding purpose consistent with income effect.For example, in camera preview, each preview
The exposure parameter of frame is sensitivity ISO400, the time for exposure is 1/100 second, is then shot, and ultimately produces same parameter
Photo.The photo and the effect of preview image so shot is basically identical.But this process for long exposure just
Can be there are problem, if for example, current environment, which will reach the rational exposure effect time, needs 8S, then come from preview angle
See, can just refresh an interface per 8S, the delay of this overlength for etc. can be very poor user experience for user to be captured.
To solve the above-mentioned problems, three aspects being closely related based on the exposure effect with picture：Aperture, time for exposure and ISO,
Propose a kind of acquisition parameters of preview image image pickup method different from actual photographed parameter, i.e., when obtaining preview image,
In order to improve user experience, the time for exposure of preferential guarantee picture is short enough, when obtaining final shooting photo, in order to protect
Hindering the photo finally shot has enough exposure values, and in shooting by aperture either ISO, or both coordinate to exposing
Light value compensates, and also ensure that influences during actual photographed because the time for exposure shortens caused by picture effect.
To achieve the above object, as shown in figure 3, first embodiment of the invention proposes a kind of filming apparatus 1, the device bag
Include：First acquisition module 01, computing module 02, the second acquisition module 03 and taking module 04.
First acquisition module 01, for obtaining the first acquisition parameters of preview image；Wherein the first acquisition parameters include the
One shutter speed.
In embodiments of the present invention, user can understand the photo that will be shot before photo is shot by preview image
Picture effect, to determine whether to continue to shoot.In order to quickly generate the preview image, the pre- of the user to be captured such as is improved
Look at experience, the preview image can be generated with the first shutter speed.
Alternatively, which refers to that shutter starts the shutter that the time is t1 and starts speed, first shutter speed
The time needs of degree are short enough, will not be that user bring the previews such as pause, delay or wait to experience.Known common shutter speed
Standard have：1/1000 second, 1/500 second, 1/250 second, 1/125 second, 1/60 second, 1/30 second, 1/15 second, 1/8 second, 1/4 second, 1/
2 seconds and 1 second.Therefore, in order to reach object defined above, t1 ＜ 1/4s can be selected, certainly, in various embodiments, can be with
First shutter speed is arranged to different numerical value according to the different shooting customs of different application scenarios or different user,
It is not limited for the concrete numerical value of the first shutter speed in embodiments of the present invention.
Computing module 02, for calculating preview image according to the first acquisition parameters before taking module 04 is shot
Exposure value.
In embodiments of the present invention, after obtaining one or more preview image with the first shutter speed, user can root
A final preview image is determined according to the picture effect of different preview images, and is subject to the final preview image to carry out
Shooting.Since the principal element for influencing image frame effect is exactly exposure value, in order to enable the picture of the photo of actual photographed
Face effect it is consistent with the picture effect of finally definite preview image, it is necessary to ensure when being shot with and the preview image
The same or similar exposure value, the similar difference value for referring to exposure value are less than or equal to default discrepancy threshold, the difference threshold
The concrete numerical value of value can such as be carried out according to different application scenarios self-definings according to the height to photographic quality requirement is different
Definition.Here, illustrated in case of exposure value is identical.There is same frame with preview image in order to shoot
, it is necessary to obtain the exposure value of the preview image first, which is completed the photo of effect by computing module 02.By calculating mould
Before block 02 calculates exposure value, first describe in detail to the first acquisition parameters, because exposure value is to be based on the first acquisition parameters
Calculated.
Alternatively, the first acquisition parameters further include：First f-number and the first sensitivity.
In embodiments of the present invention, the letter such as aperture, time for exposure and ISO can be included in the acquisition parameters of a photo
Breath, and these information are three aspects being closely related with the exposure effect of picture.
Aperture, is also coke ratio, is to be used for controlling the component of lens opening size on camera, with control the depth of field, camera lens into
Image quality element and with shutter Collaborative Control light-inletting quantity.Sometimes the concept of f-number is also illustrated that.Aperture size is expressed to be represented with f values,
For the camera lens manufactured, it is impossible to arbitrarily change the diameter of camera lens, but can be by adding polygon inside camera lens
Or it is round, and the poroid grating of variable area controls camera lens thang-kng amount to reach, and this device is just called aperture, aperture
The focal length of f values=camera lens/aperture bore.Influence of the aperture to photo：Aperture is bigger, and light-inletting quantity is bigger, and the depth of field is smaller, and f values are got over
It is small.Complete f-number series is as follows：f1.0、f1.4、f2.0、f2.8、f4.0、f5.6、f8.0、f11、f16、f22、f32、
F45 and f64.Here it is worth noting that aperture f values are smaller, clear aperature is bigger, the light-inletting quantity within the same unit interval
Just it is more, and the light-inletting quantity of upper level is just twice of next stage, such as aperture is adjusted to f5.6 from f8, light-inletting quantity is just more
One times, we also say that aperture has opened greatly level-one.The thang-kng amount of f5.6 is twice of f8.Similarly, f2 is 16 times of f8 luminous fluxes, from
F8 is adjusted to f2, and aperture has opened greatly level Four.For consumption-orientation digital camera, aperture f values are usually between f2.8-f11.In addition
Many digital cameras can do 1/3 grade of adjustment when adjusting aperture.Numerical value behind f is smaller, and aperture is bigger.The work of aperture
With the light-inletting quantity for being to determine camera lens, aperture is bigger, and light-inletting quantity is more；It is conversely, then smaller.It is exactly briefly, in shutter speed
In the case that degree (or film speed, be inversely proportional with the time for exposure) is constant, the smaller aperture of aperture f numerical value is bigger, and light-inletting quantity is got over
More, picture is brighter；Aperture f numerical value gets over that large aperture is smaller, and picture is than dark.
Time for exposure is controlled by shutter speed, and shutter speed represents that shutter is kept it turned on when camera is shot
Time.The time is shorter, and the time for exposure is shorter, and the time is longer, and the time for exposure is longer.Shutter speed by second or several points it
Represent the length of time within one second.The fuselage of different camera manufacturers has different shutter speed initial ranges, this
Scope is also critically important.All Single-sens reflex cameras at least have following shutter speed (perhaps can be more)：1、
1/2nd, 1/4,1/8,1/15,1/30,1/60,1/125,1/250,1/500 and 1/1000 second.Pass through this series of shutter speed
Degree is, it can be seen that each shutter speed is the half of previous speed, but twice of the latter.For example, 1/125 second is 1/
The half of 60 seconds, but twice of 1/250 second.They all differ a gear, and each gear all differs half or one times of time.From 1/
Move a gear (time halves) within 125 seconds to 1/250 second, as soon as the mobile gear (halving again) again by 1/500 second, by 1/1000 second
Move three gears.When camera is arranged to certain specific auto exposure mode, most of cameras can realize the fast of " stepless "
Door speed.That is, shutter speed can be determined by electronic device and be arranged to any shutter speed, and from fixed gear
The limitation of position.Even if camera is arranged to this pattern, the concept of " halving " and " doubling " still remains.It is new in recent years
List in camera, the shutter speed of most of camera can carry out the increase and decrease of 1/3 gear.For example, the shutter gear of certain Nikon camera
Including：1/8th, 1/10,1/13,1/15,1/20,1/25,1/30,1/40,1/50 and 1/60 second etc..From 1/30 to 1/60 second
It is a gear, likewise, being also one grade from 1/20 to 1/40 and from 1/13 to 1/25.When you change shutter speed, while
Change the mode that moving object is recorded on egative film.Shutter speed is faster, and moving object will present apparent in egative film
Video, conversely, shutter speed is slower, the object of movement is fuzzyyer.
Shutter speed and the aperture size of camera lens determine that light reaches the amount of film or sensor together.In general, exposure is logical
What overexposure light value (EV values) was weighed, represent the exposure for halving or doubling.There are multiple and different shutter speeds and aperture combination energy
Reach identical exposure：Shutter speed, which halves, will improve exposure value 1EV, and aperture redoublings (i.e. f-number halves) will general
Exposure value improves 2EV.In this way, 1/250 second shutter speed and f/8 aperture size, 1/500 second with f/5.6,1/125 second with
The exposure combinations such as f/11 are attained by identical exposure value.
ISO is a kind of index similar to film speed, in fact, the ISO of digital camera is by adjusting photoreceptor
The sensitivity of part merges sensitivity speck to realize, that is to say, that is the light sensitivity by lifting sensor devices or conjunction
And several adjacent sensitivity specks come achieve the purpose that lifted ISO.Sensor devices have a respond, this respond is
Changeless, the ISO for lifting digital camera is realized by two ways：1st, improve by force each pixel brightness and
Contrast；As long as the 2nd, the completing an original pixel jointly using multiple pixels to complete of the task.It can be seen from the above that digital phase
Loss after machine lifting ISO to image quality is very big, and when especially sensor devices area is smaller, ISO is for image quality for lifting
It is to life.Therefore, generally in the case where the sensor devices quality of camera does not allow, in order to ensure image quality, can all protect as far as possible
The initial setting values of ISO are held, ISO are not adjusted.
Based on above-mentioned introduction, computing module 02 is described in detail below how by the first acquisition parameters calculating preview image
Exposure value.
The exposure value that computing module 02 calculates preview image according to the first acquisition parameters includes step 101-102：
101st, the corresponding first shutter series of the first shutter speed, the first aperture are obtained according to default exposure value mapping table
It is worth corresponding first aperture series and the corresponding first photosensitive series of the first sensitivity.
In embodiments of the present invention, understood based on described above, the exposure of f-number, shutter speed and ISO for photo
Effect is most important, and therefore, it is necessary to obtain the first shutter speed, the first aperture from the first acquisition parameters of preview image first
Value and the first sensitivity.
In embodiments of the present invention, it is for a kind of define of exposure value (Exposure Value, EV)：Exposure value is one
It is a with 2 for bottom logarithmic scale system,Wherein f is f-number；T is the time for exposure (with shutter speed into anti-
Than), the unit second.Therefore, calculating of the computing module 02 to exposure value can obtain the first f-number f by above-mentioned calculating formula
Current exposure value is obtained with the basis of the first shutter speed 1/t.Further, since the another kind of exposure value is defined as:Work as sense
When luminosity is ISO 100, aperture-coefficient F1, time for exposure are 1 second, light exposure is defined as 0, and light exposure reduces by one grade of (shutter
Speed reduces one grade of half or stop down), EV values increase by 1.Exposure value represents all cameras that can be provided and equally expose
Diaphragm shutter combines.Shutter speed is lower, and aperture is bigger, then thang-kng time and area are bigger, i.e., exposure value is bigger.Such as light
F/2.8 is enclosed, the shutter EV values of 1/15 second are bigger than aperture f/8, the shutter EV values of 1/60 second.Based on above-mentioned principle, computing module 02
The meter of exposure value can also be carried out by a default exposure value mapping table, the numerical procedure of exposure meter will be done in detail below
It is thin to introduce.
In embodiments of the present invention, which can include each enforceable fast of camera terminal
Door speed, f-number and ISO, and it is provided with different shutter grades, different shutter grades for different shutter speeds
Different shutter series can be corresponded to.Similarly, also it is provided with the default exposure value mapping table for different f-numbers different
Aperture grade, different aperture grades can correspond to different aperture series；And it is provided with for different ISO different photosensitive etc.
Level, different photosensitive grades can correspond to different photosensitive series.One embodiment of the default exposure value mapping table such as institute of table 1
Show.It should be noted that following table only lists and partial content, with the gradual increase of shutter speed, f-number and ISO
Or reduce, corresponding shutter series, the photosensitive series of aperture sum of series also can corresponding plus or minus one, it is numerous to list herein.
Table 1
In embodiments of the present invention, the first shutter speed in the first acquisition parameters, the first f-number and first are obtained
After sensitivity, the corresponding series of above-mentioned parameter, i.e., the first fast gate leve can be obtained according to exposure value mapping table embodiment table 1
Number, the first aperture series and the first photosensitive series.For example, it is assumed that the first shutter speed is 1/250s, the first f-number is f8,
First sensitivity is 200；Then the first shutter series is 8, and the first aperture series is 6, and the first photosensitive series is 1.
It should be noted that the default exposure value mapping table can be according to different application scenarios or application habit etc.
It is arranged to different forms, is not limited to above-mentioned table 1.
In other embodiments, since ISO is generally limited to sensor devices quality, if sensor devices are second-rate,
Carry out that during ISO adjustings image quality can be influenced.Therefore, it can keep only setting shutter speed and f-number on the basis of ISO is constant
Mapping table, and can be directly to different shutter speeds and the exposure value corresponding to f-number of breaking forth in the mapping table.Such as table 2
It is shown, the mapping table of the shutter speed, f-number and the exposure value three that are set when the table is on the basis of ISO100.As long as
The exposure value obtained under ISO100, can select different shutter speeds and f-number according to the table under identical exposure value
Combination.
102nd, the first shutter series, first the first photosensitive series of aperture sum of series are substituted into following first calculating formula and calculates institute
State exposure value：
EV=F+T+I；
Wherein, EV is exposure value, and F is aperture series, and T is shutter series, and I is photosensitive series.
In embodiments of the present invention, how illustrated first by taking table 1 as an example according to the first shutter series, the first aperture level
Number and the first photosensitive series calculate exposure value.Here, on the basis of table 1, be also provided with exposure value and obtain calculation formula, i.e., it is above-mentioned
The first calculating formula, pass through the calculating formula and the first shutter series of acquisition, first the first photosensitive series of aperture sum of series carried out
Addition is the corresponding exposure value of the first acquisition parameters.For example, the first shutter series 8, the first light are obtained in the above-described embodiments
Enclose after series 6, the first photosensitive series 1, then EV=8+6+1=15.So the first shooting calculated according to 1 embodiment of table is joined
Several exposure values is 15.
Table 2
Alternatively, photosensitive series is minimum series.
In embodiments of the present invention, mainly considered in the first above-mentioned calculating formula comprising I in some cameras or shooting
, can be by adjusting the numerical value of ISO such as 200,400,800, so as to obtain not when the sensor devices quality of terminal is relatively good
With light exposure, and will not influence to shoot the quality of photo, still, due to for general camera or camera terminal,
Adjusting to ISO would generally destroy image quality.Therefore, it is general to keep ISO constant as far as possible in order to ensure the image quality of photo, usually protect
It is 100 to hold as minimum value, i.e. ISO.Then when carrying out the calculating of EV values, I=0 is typically chosen.
Illustrated below by taking table 2 as an example and how to obtain the corresponding exposure value of the first acquisition parameters.By table 2, when
First shutter speed is 1/250s, when the first f-number is f8, in table 2 corresponding EV values be 14, due to 2 embodiment of table be with
Based on ISO100, therefore, the correspondence series of ISO or corresponding EV values are not added in the EV values calculated.In other implementations
In example, if wanting to add the influence factor of ISO on the basis of table 2, the sense of ISO as shown in table 1 can be pre-set
Optical orders mapping table, or the EV value comparison tables of ISO, i.e., when ISO is 100, EV values+0；When ISO is 200, EV values+1；When
When ISO is 400, EV values+2；When ISO is 800, EV values+3；When ISO is 1600, EV values+4；When ISO is 3200, EV values
+5；When ISO is 6400, EV values+6.For example, the EV values that above-described embodiment calculates are 14, if the EV when ISO is 100
Value not yet 14, when ISO is 200, the EV values+1=15.
By two kinds of above-mentioned embodiment schemes, the corresponding exposure of the first acquisition parameters in preview image can be calculated
Value.
Second acquisition module 03, for keeping exposure value is constant to obtain the second acquisition parameters with the second shutter speed.
In embodiments of the present invention, after the exposure value that preview image is calculated by computing module 02, in order to obtain with
The identical image quality of preview image, and prolonging exposure time, can reduce on the basis of the exposure value for keeping calculating is constant
Shutter speed, so as to obtain the second acquisition parameters.For example, the first shutter speed is transformed to the second shutter speed.Alternatively,
Two shutter speeds refer to that shutter starts the shutter that the time is t2 and starts speed；t2≥1/4s.Second shutter speed is slower than first
Shutter speed, when reducing shutter speed, can increase time for exposure during shooting, so as to increase light exposure.Therefore, in order to obtain
The image quality identical with preview image, can compensate shutter speed by adjusting f-number and/or ISO, to keep exposing
It is worth constant.
Alternatively, the second acquisition parameters further include：Second f-number and the second sensitivity.
In embodiments of the present invention, after the exposure value that preview image is calculated by computing module 02, if it is desired to
Shutter speed keeps the exposure value constant after being reduced to the second shutter speed, then needs to obtain corresponding with second shutter speed
The second f-number and the second sensitivity.Second f-number and the second sense are obtained especially by the second following acquisition modules 03
Luminosity.
Second acquisition module 03 keeps exposure value is constant to obtain the second acquisition parameters with the second shutter speed including walking
Rapid 201-204：
201st, the corresponding second shutter series of the second shutter speed is obtained according to default exposure value mapping table.
In embodiments of the present invention, equally illustrated by taking above-mentioned Tables 1 and 2 as an example, for example, it is assumed that fast in shooting
Door speed by original preview when the first shutter speed 1/250s be reduced to the second shutter speed 1 second, then in table 1 understand this second
The corresponding second shutter series of shutter speed is 0.It it is 2 seconds, 4 seconds, 8 seconds etc. if the second shutter speed bigger, then this is second fast
Gate leve number gradually subtracts 1 successively.For example, when the second shutter speed is 2 seconds, the second shutter series is -1；When the second shutter speed
For 8 seconds when, the second shutter series be -3.The rest may be inferred for other enabling speed values, and this will not be repeated here.
202nd, the sum of the second aperture series and the second photosensitive series are obtained according to the first calculating formula and the second shutter series.
In embodiments of the present invention, it is known that exposure value and the second shutter series, then pass through the first above-mentioned calculating formula
To obtain the sum of the second aperture series and the second photosensitive series.For example, it is assumed that EV=8, the second shutter series is -1, i.e. T=-1,
Then according to the first calculating formula EV=F+T+I, F+I=EV-T=9.
203rd, second is obtained according to default exposure value mapping table and the sum of the second aperture series and the second shutter series
One or more parameter combinations of f-number and the second sensitivity.
In embodiments of the present invention, the combination of multiple F+I=9 can be obtained by table 1, for example, ISO is 200 (I=1),
F-number is 16 (F=8)；ISO is 100 (I=0), and f-number is 22 (F=9).
It should be noted that the numerical value of the limitation of camera subject performance itself, itself aperture and ISO only have several selections, because
EV values obtained by this are also restricted, therefore in specific shooting, it is also necessary to shutter speed is carried out according to the performance of itself camera
Corresponding adjustment.In addition, by table 2 it can also be seen that different shutter speeds and f-number can reach maximum EV values when
It is conditional, can be limited when camera is adjusted according to the corresponding EV values of different shutter speeds and f-number scope into
Row is adjusted.
204th, using any one parameter combination in one or more parameter combinations as the second acquisition parameters.
In embodiments of the present invention, after the multiple parameters combination that f-number and ISO are obtained by above-mentioned steps, photographer
A suitable combination parameter can be determined according to the camera properties of itself, for example, ISO is 200 (I=1), f-number is 16 (F
=8).And by the ISO values, the second acquisition parameters when f-number and the second above-mentioned shutter speed are together as actual photographed.
Taking module 04, for being shot using the second acquisition parameters for including the second shutter speed, wherein, second is fast
Door speed is less than the first shutter speed.
In embodiments of the present invention, can be according to the second count after obtaining the second acquisition parameters according to above scheme
Take the photograph parameter and carry out actual photographed, the photo for shooting acquisition at this time has identical exposure value, therefore, shooting with preview image
Photo has the picture effect essentially identical with preview image.
So far, by the agency of be over the embodiment of the present invention whole essential characteristics, it is necessary to which explanation, such scheme is all
One or more embodiments of the embodiment of the present invention, can also use other embodiments in other embodiments,
Any scheme similar to type currency of the embodiment of the present invention, and any combination of the embodiment of the present invention essential characteristic, all
Within the protection domain of the embodiment of the present invention.
In addition, to achieve the above object, present invention also offers a kind of image pickup method, as shown in Figure 4, Figure 5, it is necessary to illustrate
, any embodiment in above-mentioned device embodiment is equally applicable in the embodiment of the method for the present invention, no longer superfluous herein
State.The method comprising the steps of 301-302：
301st, the first acquisition parameters of preview image are obtained；Wherein the first acquisition parameters include the first shutter speed.
302nd, shot using the second acquisition parameters including the second shutter speed, wherein, the second shutter speed is less than
First shutter speed.
Alternatively, this method further includes：
The exposure value of preview image is calculated according to the first acquisition parameters before being shot.
Keep the exposure value is constant to obtain the second acquisition parameters.
Alternatively,
First shutter speed refers to that shutter starts the shutter that the time is t1 and starts speed；T1 ＜ 1/4s.
Second shutter speed refers to that shutter starts the shutter that the time is t2 and starts speed；t2≥1/4s.
Alternatively, the first acquisition parameters further include：First f-number and the first sensitivity.
The exposure value of preview image is calculated according to the first acquisition parameters to be included：
The corresponding first shutter series of first shutter speed, the first f-number pair are obtained according to default exposure value mapping table
The the first aperture series answered and the corresponding first photosensitive series of the first sensitivity.
First shutter series, first the first photosensitive series of aperture sum of series are substituted into following first calculating formula and calculates exposure
Value：
EV=F+T+I；
Wherein, EV is exposure value, and F is aperture series, and T is shutter series, and I is photosensitive series.
Alternatively, photosensitive series is minimum series.
Alternatively, the second acquisition parameters further include：Second f-number and the second sensitivity.
Constant second acquisition parameters that obtain of exposure value are kept to include：
The corresponding second shutter series of second shutter speed is obtained according to default exposure value mapping table.
Second circle the sum of series and the second photosensitive series is obtained according to the first calculating formula and the second shutter series.
Second aperture is obtained according to default exposure value mapping table and the sum of the second aperture series and the second photosensitive series
One or more parameter combinations of value and the second sensitivity.
Using any one parameter combination in one or more parameter combinations as the second acquisition parameters.
The present invention proposes a kind of filming apparatus and method, which includes：First acquisition module and taking module.First
Acquisition module obtains the first acquisition parameters of preview image；Wherein the first acquisition parameters include the first shutter speed；Taking module
Shot using the second acquisition parameters including the second shutter speed, wherein, the second shutter speed is less than the first shutter speed.
Pass through the scheme of the embodiment of the present invention, it is possible to increase the preview experience of user, and ensure preview image with shooting the picture of photo
Face effect is consistent.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements not only include those key elements, and
And other elements that are not explicitly listed are further included, or further include as this process, method, article or device institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Also there are other identical element in the process of key element, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme substantially in other words does the prior art
Going out the part of contribution can be embodied in the form of software product, which is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that a station terminal equipment (can be mobile phone, computer, takes
Be engaged in device, air conditioner, or network equipment etc.) perform method described in each embodiment of the present invention.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made, is directly or indirectly used in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of filming apparatus, it is characterised in that described device includes：First acquisition module and taking module；
First acquisition module, for obtaining the first acquisition parameters of preview image；Wherein described first count, which takes the photograph parameter, to be included
First shutter speed；
The taking module, for being shot using the second acquisition parameters for including the second shutter speed, wherein, described second
Shutter speed is less than first shutter speed.
2. filming apparatus as claimed in claim 1, it is characterised in that described device further includes computing module and second and obtains mould
Block；
The computing module, it is described pre- for being calculated before the taking module is shot according to first acquisition parameters
Look at the exposure value of image；
Second acquisition module, for keeping the exposure value is constant to obtain second acquisition parameters.
3. filming apparatus as claimed in claim 2, it is characterised in that first acquisition parameters further include：First f-number
With the first sensitivity；
The exposure value that the computing module calculates the preview image according to first acquisition parameters includes：
The corresponding first shutter series of first shutter speed, first aperture are obtained according to default exposure value mapping table
It is worth corresponding first aperture series and the corresponding first photosensitive series of first sensitivity；
Described in the first shutter series, the first aperture sum of series first photosensitive series is substituted into following first calculating formula meter
Calculate the exposure value：
EV=F+T+I；
Wherein, the EV is exposure value, and the F is aperture series, and the T is shutter series.
4. filming apparatus as claimed in claim 3, it is characterised in that the photosensitive series is minimum series.
5. the filming apparatus as described in claim 3 or 4, it is characterised in that second acquisition parameters further include：Second aperture
Value and the second sensitivity；
Second acquisition module keeps constant acquisition second acquisition parameters of the exposure value to include：
The corresponding second shutter series of second shutter speed is obtained according to the default exposure value mapping table；
The sum of second aperture series and the second photosensitive series are obtained according to first calculating formula and the second shutter series；
Obtained according to the default exposure value mapping table and the sum of the second aperture series and the described second photosensitive series
One or more parameter combinations of second f-number and second sensitivity；
Using any one parameter combination in one or more of parameter combinations as second acquisition parameters.
A kind of 6. image pickup method, it is characterised in that the described method includes：
Obtain the first acquisition parameters of preview image；Wherein described first count, which takes the photograph parameter, includes the first shutter speed；
Shot using the second acquisition parameters including the second shutter speed, wherein, second shutter speed is less than described
First shutter speed.
7. image pickup method as claimed in claim 6, it is characterised in that the method further includes：
The exposure value of the preview image is calculated according to first acquisition parameters before being shot；
Keep the exposure value is constant to obtain second acquisition parameters.
8. image pickup method as claimed in claim 7, it is characterised in that first acquisition parameters further include：First f-number
With the first sensitivity；
The exposure value that the preview image is calculated according to first acquisition parameters includes：
The corresponding first shutter series of first shutter speed, first aperture are obtained according to default exposure value mapping table
It is worth corresponding first aperture series and the corresponding first photosensitive series of first sensitivity；
Described in the first shutter series, the first aperture sum of series first photosensitive series is substituted into following first calculating formula meter
Calculate the exposure value：
EV=F+T+I；
Wherein, the EV is exposure value, and the F is aperture series, and the T is shutter series.
9. image pickup method as claimed in claim 8, it is characterised in that the photosensitive series is minimum series.
10. image pickup method as claimed in claim 7 or 8, it is characterised in that second acquisition parameters further include：Second light
Circle value and the second sensitivity；
It is described to keep constant acquisition second acquisition parameters of the exposure value to include：
The corresponding second shutter series of second shutter speed is obtained according to the default exposure value mapping table；
The sum of second aperture series and the second photosensitive series are obtained according to first calculating formula and the second shutter series；
Obtained according to the default exposure value mapping table and the sum of the second aperture series and the described second photosensitive series
One or more parameter combinations of second f-number and second sensitivity；
Using any one parameter combination in one or more of parameter combinations as second acquisition parameters.
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| CN201610946760.0A CN107995431A (en) | 2016-10-26 | 2016-10-26 | A kind of filming apparatus and method |
| PCT/CN2017/101845 WO2018076953A1 (en) | 2016-10-26 | 2017-09-15 | Photography apparatus and method |
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| CN201610946760.0A CN107995431A (en) | 2016-10-26 | 2016-10-26 | A kind of filming apparatus and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111435971A (en) * | 2019-01-15 | 2020-07-21 | 阿里巴巴集团控股有限公司 | Image acquisition parameter configuration method and device, terminal and readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW200906179A (en) * | 2007-04-13 | 2009-02-01 | Elmo Co Ltd | Method of exposure control and image pickup apparatus |
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| TW200906179A (en) * | 2007-04-13 | 2009-02-01 | Elmo Co Ltd | Method of exposure control and image pickup apparatus |
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| CN101778205A (en) * | 2009-01-14 | 2010-07-14 | 华晶科技股份有限公司 | Auxiliary method for shooting digital pictures |
| JP2011166388A (en) * | 2010-02-08 | 2011-08-25 | Toshio Koshida | Image pickup apparatus and method of setting image pickup conditions |
| CN104301624A (en) * | 2014-10-30 | 2015-01-21 | 青岛海信移动通信技术股份有限公司 | Image shooting brightness control method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111435971A (en) * | 2019-01-15 | 2020-07-21 | 阿里巴巴集团控股有限公司 | Image acquisition parameter configuration method and device, terminal and readable storage medium |
| CN111435971B (en) * | 2019-01-15 | 2022-04-08 | 阿里巴巴集团控股有限公司 | Image acquisition parameter configuration method and device, terminal and readable storage medium |
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| WO2018076953A1 (en) | 2018-05-03 |
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