CN106331499B - Focusing method and photographing device - Google Patents
Focusing method and photographing device Download PDFInfo
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- CN106331499B CN106331499B CN201610820821.9A CN201610820821A CN106331499B CN 106331499 B CN106331499 B CN 106331499B CN 201610820821 A CN201610820821 A CN 201610820821A CN 106331499 B CN106331499 B CN 106331499B
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- detection sensor
- marginal information
- phase detection
- phase
- focusing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
- H04N23/672—Focus control based on electronic image sensor signals based on the phase difference signals
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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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
- H04N23/45—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Studio Devices (AREA)
Abstract
The embodiment of the invention discloses a kind of focusing methods, this method comprises: judging whether the marginal information that first phase detection sensor detects is credible, and judge whether the marginal information that second phase detection sensor detects is credible；Focusing process mode is determined according to judging result；Wherein, the first phase detection sensor and the second phase detection sensor are arranged in a crossed manner.The embodiment of the present invention also provides a kind of photographing device simultaneously.
Description
Technical field
The present invention relates to technical field of image processing more particularly to a kind of focusing methods and photographing device.
Background technique
There are two types of schemes for the focusing of dual camera at present, first is that obtaining rough position using the depth map that dual camera generates
It sets, is then found by fine search to accurate focus point；Second is that for supporting phase-detection auto-focusing (Phase-
Detection Auto focus, PDAF) sensor camera, focused using phase-detection, otherwise using modulation transmitting letter
Number (Modulation Transfer Function, MTF) focusing.
For supporting the camera of PDAF sensor, phase-detection pixel is distributed in pairs, minute of pairs of phase-detection point
Cloth direction influences the direction at the edge that can be detected, if phase-detection point is left and right distribution, that can detect vertical
Edge can then detect the edge of horizontal direction if it is what is be distributed up and down.
With phase-detection pixel or so distribution the case where for example: phase-detection pixel or so distribution phase-detection pass
Sensor is only able to detect vertical edge, if there is enough vertical components in edge, phase detection sensor is detected accurate
Degree is just able to satisfy requirement, but for there was only the case where horizontal edge in image, the detection of phase detection sensor will be unable to guarantee
Accuracy.
Summary of the invention
In view of this, an embodiment of the present invention is intended to provide a kind of focusing method and photographing device, to promote the accurate of focusing
Degree.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of photographing device, comprising:
Judgment module for judging whether the marginal information that first phase detection sensor detects is credible, and judges
Whether the marginal information that two-phase level detection sensor detects is credible；
Processing module is determined, for determining focusing process mode according to judging result；
Wherein, the first phase detection sensor and the second phase detection sensor are arranged in a crossed manner.
Photographing device as described above, wherein the determining processing module is specifically used for:
If the marginal information that the first phase detection sensor detects is credible, and the second phase detection sensor
The marginal information detected is credible, then the marginal information and second phase that the first phase detection sensor detects
The confidence level for the marginal information that level detection sensor detects；
If the with a high credibility of the marginal information that the first phase detection sensor detects detects in the second phase
The confidence level for the marginal information that sensor detects is carried out using the marginal information that the first phase detection sensor detects
Phase auto-focusing；
If the with a high credibility of the marginal information that the second phase detection sensor detects detects in the first phase
The confidence level for the marginal information that sensor detects is carried out using the marginal information that the second phase detection sensor detects
Phase auto-focusing；
Alternatively, marginal information and second phase detection sensing that the first phase detection sensor detects
The size of the confidence level for the marginal information that device detects carries out phase using the higher marginal information of confidence level in pre-determined threshold
Auto-focusing, if marginal information and second phase detection sensor detection that the first phase detection sensor detects
To the size of confidence level of marginal information exceed the pre-determined threshold, then carried out at focusing using contrast auto-focusing
Reason.
Photographing device as described above, wherein the determining processing module is specifically used for:
If the marginal information that the first phase detection sensor detects is credible, the second phase detection sensor inspection
The marginal information measured is insincere, then it is automatic to carry out phase using the marginal information that the first phase detection sensor detects
Focusing.
Photographing device as described above, wherein the determining processing module is specifically used for:
If the marginal information that the first phase detection sensor detects is insincere, the second phase detection sensor
The marginal information detected is credible, then it is automatic to carry out phase using the marginal information that the second phase detection sensor detects
Focusing process.
Photographing device as described above, wherein the determining processing module is specifically used for:
If the marginal information that the first phase detection sensor detects is insincere, and second phase detection sensing
The marginal information that device detects is insincere, then carries out focusing process using contrast auto-focusing.
A kind of focusing method, which comprises
Judge whether the marginal information that first phase detection sensor detects is credible, and judges second phase detection sensing
Whether the marginal information that device detects is credible；
Focusing process mode is determined according to judging result；
Wherein, the first phase detection sensor and the second phase detection sensor are arranged in a crossed manner.
Method as described above, wherein described that focusing process mode is determined according to judging result, comprising:
If the marginal information that the first phase detection sensor detects is credible, and the second phase detection sensor
The marginal information detected is credible, then the marginal information and second phase that the first phase detection sensor detects
The confidence level for the marginal information that level detection sensor detects；
If the with a high credibility of the marginal information that the first phase detection sensor detects detects in the second phase
The confidence level for the marginal information that sensor detects is carried out using the marginal information that the first phase detection sensor detects
Phase auto-focusing；
If the with a high credibility of the marginal information that the second phase detection sensor detects detects in the first phase
The confidence level for the marginal information that sensor detects is carried out using the marginal information that the second phase detection sensor detects
Phase auto-focusing；
Alternatively, marginal information and second phase detection sensing that the first phase detection sensor detects
The size of the confidence level for the marginal information that device detects carries out phase using the higher marginal information of confidence level in pre-determined threshold
Auto-focusing, if marginal information and second phase detection sensor detection that the first phase detection sensor detects
To the size of confidence level of marginal information exceed the pre-determined threshold, then carried out at focusing using contrast auto-focusing
Reason.
Method as described above, wherein described that focusing process mode is determined according to judging result, comprising:
If the marginal information that the first phase detection sensor detects is credible, the second phase detection sensor inspection
The marginal information measured is insincere, then it is automatic to carry out phase using the marginal information that the first phase detection sensor detects
Focusing.
Method as described above, wherein described that focusing process mode is determined according to judging result, comprising:
If the marginal information that the first phase detection sensor detects is insincere, the second phase detection sensor
The marginal information detected is credible, then it is automatic to carry out phase using the marginal information that the second phase detection sensor detects
Focusing process.
Method as described above, wherein described that focusing process mode is determined according to judging result, comprising:
If the marginal information that the first phase detection sensor detects is insincere, and second phase detection sensing
The marginal information that device detects is insincere, then carries out focusing process using contrast auto-focusing.
A kind of focusing method and photographing device provided by the embodiment of the present invention, by by first phase detection sensor and
Second phase detection sensor is arranged in a crossed manner, when starting focusing, judges the edge letter that first phase detection sensor detects
Whether breath is credible, and judges whether the marginal information that second phase detection sensor detects is credible；It is determined according to judging result
Focusing process mode, in this way, can a direction in the picture marginal information quantity it is seldom, and the marginal information of other direction
When quantity is more, the accuracy of focusing is promoted.
Detailed description of the invention
The hardware structural diagram of Fig. 1 optional mobile terminal of each embodiment to realize the present invention；
Fig. 2 is the communication system architecture schematic diagram that mobile terminal provided in an embodiment of the present invention can operate；
Fig. 3 is the flow chart of focusing method provided in an embodiment of the present invention；
Fig. 4 is the flow chart using focusing method provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of photographing device provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
1 describe to realize the mobile terminal of each embodiment of the present invention with reference to the drawings.In subsequent description, make
With the suffix for indicating such as " module ", " component " or " unit " of element only for being conducive to explanation of the invention,
There is no specific meanings for body.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 may include such as moving
It is phone, smart phone, laptop, digit broadcasting receiver, personal digital assistant (PDA), tablet computer (PAD), portable
The fixation of the mobile terminal of formula multimedia player (PMP), navigation device etc. and such as number TV, desktop computer etc.
Terminal.Hereinafter it is assumed that terminal is mobile terminal.However, it will be understood by those skilled in the art that in addition to being used in particular for mobile mesh
Element except, the construction of embodiment according to the present invention can also apply to the terminal of fixed type.
Fig. 1 to realize the present invention the mobile terminal of each embodiment hardware configuration signal.
Mobile terminal 100 may include wireless communication unit 110, audio/video (A/V) 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 can alternatively implement more or fewer components, the element of mobile terminal will be discussed in more detail below.
Wireless communication unit 110 generally includes one or more components, allows mobile terminal 100 and wireless communication system
Or the radio communication between network.For example, wireless communication unit may include broadcasting reception module 111, mobile communication module
112, at least one of wireless Internet module 113, short range communication module 114 and location information module 115.
Broadcasting reception module 111 receives broadcast singal and/or broadcast from external broadcast management server via broadcast channel
Relevant information.Broadcast channel may include satellite channel and/or terrestrial channel.Broadcast management server, which can be, to be generated and sent
The broadcast singal and/or broadcast related information generated before the server or reception of broadcast singal and/or broadcast related information
And send it to the server of terminal.Broadcast singal may include TV broadcast singal, 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.Particularly, broadcasting reception module 111
It can be wide by using such as multimedia broadcasting-ground (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video
It broadcasts-holds (DVB-H), the Radio Data System of forward link media (MediaFLO@), 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 and above-mentioned digit broadcasting system of signal.Via the received broadcast singal of broadcasting reception module 111 and/
Or broadcast related information can store 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 of server and/or receive from it radio signal.Such radio signal may include that voice is logical
Talk about signal, video calling signal or according to text and/or Multimedia Message transmission and/or received various types of data.
The Wi-Fi (Wireless Internet Access) of the support mobile terminal of wireless Internet module 113.The module can be internally or externally
It is couple to terminal.Wi-Fi (Wireless Internet Access) technology involved in the module may 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 short range communication.Some examples of short-range communication technology include indigo plant
Tooth TM, radio frequency identification (RFID), Infrared Data Association (IrDA), ultra wide band (UWB), purple honeybee TM etc..
Location information module 115 is the module for checking or obtaining the location information of mobile terminal.Location information module
115 typical case is GPS (global positioning system).According to current technology, GPS module 115, which calculates, comes from three or more
The range information and correct time information of satellite and Information application triangulation for calculating, thus according to longitude,
The three-dimensional current location information of latitude and highly accurately calculating.Currently, three are used for the method for calculating position and temporal information
Satellite and the error that calculated position and temporal information are corrected by using an other satellite.In addition, GPS module
115 can be by Continuous plus current location information in real time come calculating speed information.
A/V input unit 120 is for receiving audio or video signal.A/V input unit 120 may include 121 He of camera
Microphone 122, camera 121 is to the static images obtained in video acquisition mode or image capture mode by image capture apparatus
Or the image data of video is handled.Treated, and picture frame may be displayed on display unit 151.It is handled through camera 121
Picture frame afterwards can store in memory 160 (or other storage mediums) or be sent out via wireless communication unit 110
It send, two or more cameras 121 can be provided according to the construction of mobile terminal.Microphone 122 can be in telephone calling model, note
Sound (audio data) is received via microphone 122 in record mode, speech recognition mode etc. operational mode, and can be by this
The acoustic processing of sample is audio data.Audio that treated (voice) data can be converted in the case where telephone calling model
The format output of mobile communication base station can be sent to via mobile communication module 112.Microphone 122 can be implemented various types of
Noise eliminate (or inhibit) algorithm with eliminate noise that (or inhibition) generates during sending and receiving audio signal or
Interference.
The order that user input unit 130 can be inputted according to user generates key input data to control each of mobile terminal
Kind operation.User input unit 130 allows user to input various types of information, and may include keyboard, metal dome, touch
Plate (for example, the sensitive component of detection due to the variation of resistance, pressure, capacitor etc. caused by being contacted), idler wheel, rocking bar etc.
Deng.Particularly, when touch tablet is superimposed upon in the form of layer on display unit 151, 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 position of mobile terminal 100, user is for the presence or absence of contact (that is, touch input) of mobile terminal 100, mobile terminal
100 orientation, the acceleration or deceleration movement of mobile terminal 100 and direction etc., and generate for controlling mobile terminal 100
The order of operation or signal.For example, sensing unit 140 can sense when mobile terminal 100 is embodied as sliding-type mobile phone
The sliding-type phone is to open or close.In addition, sensing unit 140 be able to detect power supply unit 190 whether provide electric power or
Whether person's interface unit 170 couples with external device (ED).Sensing unit 140 may include that proximity sensor 141 will combine below
Touch screen is described this.
Interface unit 170 be used as at least one external device (ED) connect with mobile terminal 100 can by interface.For example,
External device (ED) may include wired or wireless headphone port, external power supply (or battery charger) port, wired or nothing
Line data port, memory card port, the port for connecting the device with identification module, audio input/output (I/O) end
Mouth, video i/o port, ear port etc..Identification module can be storage and use each of mobile terminal 100 for verifying user
It plants information and may include subscriber identification module (UIM), client identification module (SIM), Universal Subscriber identification module (USIM)
Etc..In addition, the device (hereinafter referred to as " identification device ") with identification module can take the form of smart card, therefore, know
Other device can be connect via port or other attachment devices with mobile terminal 100.Interface unit 170, which can be used for receiving, to be come from
The input (for example, data information, 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 connect with external base, interface unit 170 may be used as allowing will be electric by it
Power, which is provided from pedestal to the path or may be used as of mobile terminal 100, allows the various command signals inputted from pedestal to pass through it
It is transferred to the path of mobile terminal.The various command signals or electric power inputted from pedestal, which may be used as mobile terminal for identification, is
The no signal being accurately fitted on pedestal.Output unit 150 is configured to provide with vision, audio and/or tactile manner defeated
Signal (for example, audio signal, vision signal, alarm signal, vibration signal etc.) out.Output unit 150 may include display
Unit 151, audio output module 152, alarm unit 153 etc..
Display unit 151 may be displayed on the information handled in mobile terminal 100.For example, when mobile terminal 100 is in electricity
When talking about call mode, display unit 151 can show and converse or other communicate (for example, text messaging, multimedia file
Downloading etc.) relevant user interface (UI) or graphic user interface (GUI).When mobile terminal 100 is in video calling mode
Or when image capture mode, display unit 151 can show captured image and/or received image, show video or figure
Picture and the UI or GUI of correlation function etc..
Meanwhile when display unit 151 and touch tablet 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 may 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 watch 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 may include two or more display units (or other display devices), for example, moving
Dynamic terminal may include outernal display unit (not shown) and inner display unit (not shown).Touch screen can be used for detecting touch
Input pressure and touch input position and touch input area.
Audio output module 152 can mobile terminal be in call signal reception pattern, call mode, logging mode,
It is when under the isotypes such as speech recognition mode, broadcast reception mode, wireless communication unit 110 is received or in memory 160
The audio data transducing audio signal of middle storage and to export be sound.Moreover, audio output module 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 executes.
Audio output module 152 may 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..Other than audio or video output, alarm unit
153 can provide output in different ways 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 (Incoming Communication), alarm list
Member 153 can provide tactile output (for example, vibration) to notify to user.By providing such tactile output, even if
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 also be provided via display unit 151 or audio output module 152.
Memory 160 can store the software program etc. of the processing and control operation that are executed by controller 180, Huo Zheke
Temporarily to store the data that has exported or will export (for example, telephone directory, message, still image, video etc.).And
And memory 160 can store about the vibrations of various modes and audio signal exported when touching and being applied to touch screen
Data.
Memory 160 may 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 memory etc.), random access storage device (RAM), static random-access storage
Device (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read only memory
(PROM), magnetic storage, disk, CD etc..Moreover, mobile terminal 100 can execute memory with by network connection
The network storage device of 160 store function cooperates.
The overall operation of the usually control mobile terminal of controller 180.For example, controller 180 executes and voice communication, data
Communication, video calling etc. relevant control and processing.In addition, controller 180 may include for reproducing (or playback) more matchmakers
The multi-media module 181 of volume data, multi-media module 181 can construct in controller 180, or can be structured as and control
Device 180 separates.Controller 180 can be with execution pattern identifying processing, by the handwriting input executed on the touchscreen or picture
It 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
Electric power appropriate needed for part and component.
Various embodiments described herein can be to use the calculating of such as computer software, hardware or any combination thereof
Machine readable medium is implemented.Hardware is implemented, 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), controller, microcontroller, microprocessor, is designed to execute function described herein processor
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 with allow to execute the individual of at least one functions or operations
Software module is implemented.Software code can by the software application (or program) write with any programming language appropriate Lai
Implement, software code can store in memory 160 and be executed by controller 180.
So far, mobile terminal is described according to its function.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 grouping send data it is all if any
Line and wireless communication system and satellite-based communication system operate.
Referring now to Fig. 2 description communication system that wherein mobile terminal according to the present invention can operate.
Different air interface and/or physical layer can be used in such communication system.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) (particularly, 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 introduction is equally applicable to other types of system.
With reference to Fig. 2, cdma wireless communication system may 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 in several 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 may include multiple BSC275 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 far from BS270.Alternatively, each subregion can be by two or more for diversity reception
Antenna covering.Each BS270, which may be constructed such that, supports multiple frequency distribution, and the distribution of each frequency 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 indicating 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.The help of satellite 300 positions multiple mobile terminals
At least one of 100.
In Fig. 2, multiple satellites 300 are depicted, it is understood that, it is useful to can use any number of satellite acquisition
Location information.GPS module 115 as shown in Figure 1 is generally configured to cooperate with satellite 300 to obtain desired positioning and believe
Breath.It substitutes GPS tracking technique or except GPS tracking technique, the other of the position that can track mobile terminal can be used
Technology.In addition, at least one 300 property of can choose of GPS satellite or extraly processing 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 is received each anti-
It is handled in specific BS270 to link signal.The data of acquisition are forwarded to relevant BSC275.BSC provides call
The mobile management function of resource allocation and the coordination including the soft switching process between BS270.The number that BSC275 will also be received
According to MSC280 is routed to, the additional route service for forming interface with PSTN290 is provided.Similarly, PSTN290 with
MSC280 forms interface, and MSC280 and BSC275 form interface, and BSC275 controls BS270 correspondingly to believe forward link
Number it is sent to mobile terminal 100.
Based on above-mentioned mobile terminal hardware configuration and communication system, each embodiment of the method for the present invention is proposed.
In various embodiments of the present invention, two phase detection sensor sensor cross are arranged, one of them divides up and down
Cloth, another left and right distribution, can make phase detection sensor pixel cross-distribution, as long as there is enough sides in image in this way
Edge information can guarantee the accuracy of phase detection sensor focusing.
Fig. 3 is the flow chart of focusing method provided in an embodiment of the present invention.As shown in figure 3, method provided in this embodiment
It can specifically be executed by the photographing device for being configured with dual camera, specifically, method provided in this embodiment includes:
Step 301 judges whether the marginal information that first phase detection sensor detects is credible, and judges second phase
Whether the marginal information that detection sensor detects is credible；
Step 302 determines focusing process mode according to judging result.
Firstly the need of explanation, phase focusing technology is very mature in digital camera field application, but in intelligence
Field of terminal is then still at an early stage.
The auto-focusing mode of camera typically by two kinds, focus by contrast focusing and phase, the principle of contrast focusing
It is to be changed according to the contrast of focal point picture, finds lens location when contrast maximum, that is, accurate focusing position.
Phase focusing is focused compared to contrast, and stroke shortens speed and accelerates.Phase focusing, its principle is on photosensitive element
Some masking pixels are reserved, are specifically used to carry out phase-detection, are determined by the distance between pixel and its variation etc.
The deviant of focusing is to realize accurate focusing.It focuses compared to contrast, phase focusing does not need moving repeatedly for camera lens, focusing row
Journey is short very much, and focus process does not hesitate completely；But then, due to needing to carry out phase using the masking pixel on CMOS
Position detection, so requirement of the phase focusing to light intensity is relatively high.It follows that its advantage is that only needing to calculate primary just complete
At focusing, focusing speed is exceedingly fast, and reduces processor computation burden, the disadvantage is that being easy under low light environment to the not part of the body cavity above the diaphragm housing the heart and lungs.
Contrast focusing is time-consuming too long.From focusing is started, focus finishes and does not stop to move always camera lens to the end, " walking to miss the stop " with
Back off procedure afterwards is even more that focusing stroke is allowed to increase, and be reflected to user is exactly that focusing speed is slower.It is to shoot one piece of coin
Example, most starting image is empty burnt state, mobile with rear lens, one can see that the coin in screen gradually clearly gets up.
Until some position (focus state) coin is the most clear, but camera module itself is to be unaware of at this time that focus is complete
Complete, camera lens will continue to move, and people can be appreciated that coin thickens again at this time.At this moment camera module just recognizes camera lens
" walking to miss the stop " then retracts to clearly focal position, focusing primary so just complete just now.Its advantage is that low light environment
Under also can accurately focus, the disadvantage is that focusing step it is more, processor will calculate numerous data, and focusing time is long.
In the present embodiment, PDAF technology is exactly utilized, specifically, being provided with first phase detection sensor and second
Phase detection sensor, the first phase detection sensor and the second phase detection sensor are arranged in a crossed manner, wherein one
A distribution up and down, the distribution of another left and right, in this way, pixel cross-distribution, as long as there is enough marginal informations in image
Guarantee the accuracy of phase detection sensor focusing.
Specifically, in the present embodiment, when photographing device starts focusing, first determining whether the first phase detection sensor
Whether the marginal information detected is credible, and the marginal information may include the clarity of image border, quantity etc., then judges
Whether the marginal information that the second phase detection sensor detects is credible；It is determined further according to judging result and which uses when focusing
The marginal information that a phase detection sensor detects, or all can not in the marginal information that two phase detection sensors detect
Focusing process mode is determined when letter.
For example, it is assumed that the first phase detection sensor is distributed up and down, described second phase detection sensor or so point
Cloth.
When detecting that the photographing device starts focusing, first determine whether what the first phase detection sensor detected
Whether the marginal information being distributed up and down is credible, and if whether image border is clear, the quantity of image border is by how many etc.；Judging
Whether the marginal information for stating the left and right distribution that second phase detection sensor detects is credible, equally can be and judges image border
Quantity and clarity etc..
Judging that the marginal information being distributed up and down that the first phase detection sensor detects is credible or described
When the marginal information for the left and right distribution that two-phase level detection sensor detects is credible, examined using the first phase detection sensor
The marginal information being distributed up and down or the second phase detection sensor measured detect left and right distribution marginal information into
Row focusing process.
Alternatively, judge the marginal information being distributed up and down that the first phase detection sensor detects it is credible and
When the marginal information for the left and right distribution that the second phase detection sensor detects is credible, believed using the higher edge of confidence level
Breath carries out focusing process.
Alternatively, judge the marginal information being distributed up and down that the first phase detection sensor detects it is insincere and
When the marginal information for the left and right distribution that the second phase detection sensor detects is insincere, then certainly using existing contrast
Dynamic focusing carries out focusing process.
Wherein, contrast auto-focusing is carried out in the master reference CMOS in fuselage, and focusing speed is partially slow, but is focused
Point can arbitrarily be set within a fairly wide range.
Focusing method provided in this embodiment, by handing over first phase detection sensor and second phase detection sensor
Fork setting judges whether the marginal information that first phase detection sensor detects is credible, and judge second when starting focusing
Whether the marginal information that phase detection sensor detects is credible；Focusing process mode is determined according to judging result, in this way, can be with
The marginal information quantity of a direction is seldom in the picture, and when the marginal information quantity of other direction is more, promote focusing
Accuracy.
Focusing method provided by the invention is described in detail with specific embodiment with reference to the accompanying drawing.Fig. 4 is to answer
With the flow chart of focusing method provided in an embodiment of the present invention.As shown in figure 4, in application method provided in this embodiment,
Detailed process may include:
Step 401 starts to focus.
Step 402, whether the marginal information for judging that first phase detection sensor PD1 is detected is credible.If so, going to step
403；If it is not, going to step 407.
Step 403, whether the marginal information for judging that second phase detection sensor PD2 is detected is credible.If so, going to step
404 or step 405；If it is not, going to step 406.
Step 404 compares the edge that first phase detection sensor PD1 and second phase detection sensor PD2 are detected
The confidence level of information carries out phase auto-focusing using the marginal information that the higher phase detection sensor of confidence level detects.
Specifically, in this step, if the marginal information that the first phase detection sensor PD1 is detected is credible, and institute
It is credible to state the marginal information that second phase detection sensor PD2 is detected, then the first phase detection sensor PD1 inspection
The confidence level for the marginal information that the marginal information and the second phase detection sensor PD2 measured detects；If described first
The with a high credibility of the marginal information that phase detection sensor PD1 is detected detects in the second phase detection sensor PD2
Marginal information confidence level, it is automatic that the marginal information detected using the first phase detection sensor PD1 carries out phase
Focusing；If the with a high credibility of the marginal information that the second phase detection sensor PD2 is detected detects in the first phase
The confidence level for the marginal information that sensor PD1 is detected is believed using the edge that the second phase detection sensor PD2 is detected
Breath carries out phase auto-focusing.
The marginal information and second phase inspection that step 405, the first phase detection sensor PD1 are detected
The size for surveying the confidence level for the marginal information that sensor PD2 is detected is believed in pre-determined threshold using the higher edge of confidence level
Breath carries out phase auto-focusing, is otherwise handled using contrast auto-focusing.
It is understood that if marginal information and second phase that the first phase detection sensor PD1 is detected
The size of the confidence level for the marginal information that level detection sensor PD2 is detected exceeds the pre-determined threshold, then uses contrast
Auto-focusing carries out focusing process.
Step 406 carries out phase auto-focusing using the marginal information that first phase detection sensor PD1 is detected.
If the marginal information that the first phase detection sensor detects is credible, the second phase detection sensor inspection
The marginal information measured is insincere, then it is automatic to carry out phase using the marginal information that the first phase detection sensor detects
Focusing.
Step 407, whether the marginal information for judging that second phase detection sensor PD2 is detected is credible, if so, going to step
408；If it is not, going to step 409.
Step 408 carries out phase auto-focusing using the marginal information that second phase detection sensor PD2 is detected.
If the marginal information that the first phase detection sensor PD1 is detected is insincere, the second phase detection is passed
The marginal information that sensor PD2 is detected is credible, then the marginal information detected using the second phase detection sensor PD2 into
The processing of row phase auto-focusing.
Step 409 carries out focusing process using contrast auto-focusing.
Specifically, if the marginal information that detects of the first phase detection sensor is insincere, and the second phase
The marginal information that detection sensor detects is insincere, then carries out focusing process using contrast auto-focusing.
Focusing method provided in this embodiment, by handing over first phase detection sensor and second phase detection sensor
Fork setting judges whether the marginal information that first phase detection sensor detects is credible, and judge second when starting focusing
Whether the marginal information that phase detection sensor detects is credible；Focusing process mode is determined according to judging result, in this way, can be with
The marginal information quantity of a direction is seldom in the picture, and when the marginal information quantity of other direction is more, promote focusing
Accuracy.
Fig. 5 is the structural schematic diagram of photographing device provided in an embodiment of the present invention.As shown in figure 5, provided in this embodiment
Photographing device can specifically include: judgment module 51 and determining processing module 52.
Wherein, whether the judgment module 51, the marginal information for judging that first phase detection sensor detects may be used
Letter, and judge whether the marginal information that second phase detection sensor detects is credible；
Processing module 52 is determined, for determining focusing process mode according to judging result；
Wherein, the first phase detection sensor and the second phase detection sensor are arranged in a crossed manner.
The determining processing module 52 is specifically used for:
If the marginal information that the first phase detection sensor detects is credible, and the second phase detection sensor
The marginal information detected is credible, then the marginal information and second phase that the first phase detection sensor detects
The confidence level for the marginal information that level detection sensor detects；
If the with a high credibility of the marginal information that the first phase detection sensor detects detects in the second phase
The confidence level for the marginal information that sensor detects is carried out using the marginal information that the first phase detection sensor detects
Phase auto-focusing；
If the with a high credibility of the marginal information that the second phase detection sensor detects detects in the first phase
The confidence level for the marginal information that sensor detects is carried out using the marginal information that the second phase detection sensor detects
Phase auto-focusing；
Alternatively, marginal information and second phase detection sensing that the first phase detection sensor detects
The size of the confidence level for the marginal information that device detects carries out phase using the higher marginal information of confidence level in pre-determined threshold
Auto-focusing, if marginal information and second phase detection sensor detection that the first phase detection sensor detects
To the size of confidence level of marginal information exceed the pre-determined threshold, then carried out at focusing using contrast auto-focusing
Reason.
Specifically, the determining processing module 52 is specifically used for:
If the marginal information that the first phase detection sensor detects is credible, the second phase detection sensor inspection
The marginal information measured is insincere, then it is automatic to carry out phase using the marginal information that the first phase detection sensor detects
Focusing.
Specifically, the determining processing module 52 is specifically used for:
If the marginal information that the first phase detection sensor detects is insincere, the second phase detection sensor
The marginal information detected is credible, then it is automatic to carry out phase using the marginal information that the second phase detection sensor detects
Focusing process.
Specifically, the determining processing module 52 is specifically used for:
If the marginal information that the first phase detection sensor detects is insincere, and second phase detection sensing
The marginal information that device detects is insincere, then carries out focusing process using contrast auto-focusing.
Photographing device provided in this embodiment can be used for executing the technical solution of above method embodiment, realization principle
Similar with technical effect, details are not described herein again.
In practical applications, the judgment module 51 and determining processing module 52 can be by the centers in photographing device
Processor (Central Processing Unit, CPU), microprocessor (Micro Processor Unit, MPU), number letter
Number processor (Digital Signal Processor, DSP) or field programmable gate array (Field Programmable
Gate Array, FPGA) etc. realize.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of photographing device characterized by comprising
Judgment module for judging whether the marginal information that first phase detection sensor detects is credible, and judges the second phase
Whether the marginal information that level detection sensor detects is credible；Wherein, the marginal information includes at least the quantity of image border
And clarity；
Determine processing module, it is described according to for determining focusing process mode according to the judging result of the marginal information
The judging result of marginal information determines that focusing process mode includes: to pass according to the first phase sensor and the second phase
The marginal information trustworthy information that sensor detects, using the marginal information that the first phase sensor detects carry out focusing or
Person is focused using the marginal information that the second phase detection sensor detects or degree of comparing focusing；
Wherein, the first phase detection sensor and the second phase detection sensor are arranged in a crossed manner, described arranged in a crossed manner
Described second phase detection sensor or so the distribution or described when being distributed up and down of at least described first phase detection sensor
First phase detection sensor or so second phase detection sensor distribution up and down when being distributed.
2. photographing device according to claim 1, which is characterized in that the determining processing module is specifically used for:
If the marginal information that the first phase detection sensor detects is credible, and the second phase detection sensor detects
The marginal information arrived is credible, then the marginal information and second phase inspection that the first phase detection sensor detects
Survey the confidence level for the marginal information that sensor detects；
If with a high credibility detect in the second phase for the marginal information that the first phase detection sensor detects senses
The confidence level for the marginal information that device detects carries out phase using the marginal information that the first phase detection sensor detects
Auto-focusing；
If with a high credibility detect in the first phase for the marginal information that the second phase detection sensor detects senses
The confidence level for the marginal information that device detects carries out phase using the marginal information that the second phase detection sensor detects
Auto-focusing；
Alternatively, marginal information and second phase detection sensor inspection that the first phase detection sensor detects
The size of the confidence level of the marginal information measured, it is automatic using the higher marginal information progress phase of confidence level in pre-determined threshold
Focusing, if what marginal information and the second phase detection sensor that the first phase detection sensor detects detected
The size of the confidence level of marginal information exceeds the pre-determined threshold, then carries out focusing process using contrast auto-focusing.
3. photographing device according to claim 1, which is characterized in that the determining processing module is specifically used for:
If the marginal information that the first phase detection sensor detects is credible, the second phase detection sensor is detected
Marginal information it is insincere, then it is automatically right that the marginal information detected using the first phase detection sensor carries out phase
It is burnt.
4. photographing device according to claim 1, which is characterized in that the determining processing module is specifically used for:
If the marginal information that the first phase detection sensor detects is insincere, the second phase detection sensor detection
The marginal information arrived is credible, then carries out phase auto-focusing using the marginal information that the second phase detection sensor detects
Processing.
5. photographing device according to claim 1, which is characterized in that the determining processing module is specifically used for:
If the marginal information that the first phase detection sensor detects is insincere, and the second phase detection sensor is examined
The marginal information measured is insincere, then carries out focusing process using contrast auto-focusing.
6. a kind of focusing method, which is characterized in that the described method includes:
Judge whether the marginal information that first phase detection sensor detects is credible, and judges that second phase detection sensor is examined
Whether the marginal information measured is credible；Wherein, the marginal information includes at least the quantity and clarity of image border；
Determine that focusing process mode, the judging result according to the marginal information determine focusing process side according to judging result
Formula includes: the marginal information trustworthy information detected according to the first phase sensor and the second phase sensor, is made
Focus with the marginal information that the first phase sensor detects or be examined using the second phase detection sensor
The marginal information measured is focused or degree of comparing focusing；
Wherein, the first phase detection sensor and the second phase detection sensor are arranged in a crossed manner, described arranged in a crossed manner
Described second phase detection sensor or so the distribution or described when being distributed up and down of at least described first phase detection sensor
First phase detection sensor or so second phase detection sensor distribution up and down when being distributed.
7. according to the method described in claim 6, it is characterized in that, described according to the first phase sensor and described second
The marginal information trustworthy information that phase detector detects is carried out using the marginal information that the first phase sensor detects
Focusing is focused using the marginal information that the second phase detection sensor detects, comprising:
If the marginal information that the first phase detection sensor detects is credible, and the second phase detection sensor detects
The marginal information arrived is credible, then the marginal information and second phase inspection that the first phase detection sensor detects
Survey the confidence level for the marginal information that sensor detects；
If with a high credibility detect in the second phase for the marginal information that the first phase detection sensor detects senses
The confidence level for the marginal information that device detects carries out phase using the marginal information that the first phase detection sensor detects
Auto-focusing；
If with a high credibility detect in the first phase for the marginal information that the second phase detection sensor detects senses
The confidence level for the marginal information that device detects carries out phase using the marginal information that the second phase detection sensor detects
Auto-focusing；
Alternatively, marginal information and second phase detection sensor inspection that the first phase detection sensor detects
The size of the confidence level of the marginal information measured, it is automatic using the higher marginal information progress phase of confidence level in pre-determined threshold
Focusing, if what marginal information and the second phase detection sensor that the first phase detection sensor detects detected
The size of the confidence level of marginal information exceeds the pre-determined threshold, then carries out focusing process using contrast auto-focusing.
8. according to the method described in claim 6, it is characterized in that, described according to the first phase sensor and described second
The marginal information trustworthy information that phase detector detects is carried out using the marginal information that the first phase sensor detects
Focusing, comprising:
If the marginal information that the first phase detection sensor detects is credible, the second phase detection sensor is detected
Marginal information it is insincere, then it is automatically right that the marginal information detected using the first phase detection sensor carries out phase
It is burnt.
9. according to the method described in claim 6, it is characterized in that, described according to the first phase sensor and described second
The marginal information trustworthy information that phase detector detects, the marginal information detected using the second phase detection sensor
It focuses, comprising:
If the marginal information that the first phase detection sensor detects is insincere, the second phase detection sensor detection
The marginal information arrived is credible, then carries out phase auto-focusing using the marginal information that the second phase detection sensor detects
Processing.
10. according to the method described in claim 6, it is characterized in that, described according to the first phase sensor and described
Marginal information trustworthy information degree of the comparing focusing that two-phase level sensor detects, comprising:
If the marginal information that the first phase detection sensor detects is insincere, and the second phase detection sensor is examined
The marginal information measured is insincere, then carries out focusing process using contrast auto-focusing.
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| CN201610820821.9A CN106331499B (en) | 2016-09-13 | 2016-09-13 | Focusing method and photographing device |
| PCT/CN2017/100852 WO2018050014A1 (en) | 2016-09-13 | 2017-09-07 | Focusing method, photographing device and storage medium |
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| CN106331499B (en) * | 2016-09-13 | 2019-10-29 | 努比亚技术有限公司 | Focusing method and photographing device |
| CN108337424B (en) * | 2017-01-17 | 2021-04-16 | 中兴通讯股份有限公司 | Phase focusing method and device thereof |
| CN107809586B (en) * | 2017-10-31 | 2020-09-01 | 努比亚技术有限公司 | Mobile terminal focusing mode switching method, mobile terminal and storage medium |
| CN107888829B (en) * | 2017-11-23 | 2020-08-28 | 努比亚技术有限公司 | Focusing method of mobile terminal, mobile terminal and storage medium |
| CN108198195B (en) * | 2017-12-28 | 2021-04-16 | 努比亚技术有限公司 | Focusing method, terminal and computer readable storage medium |
| CN109951645B (en) * | 2019-04-30 | 2020-10-30 | 努比亚技术有限公司 | Focusing adjustment method, mobile terminal and computer readable storage medium |
| CN112866510B (en) * | 2019-11-12 | 2022-06-10 | Oppo广东移动通信有限公司 | Focusing method and device, electronic equipment and computer readable storage medium |
| CN112866548B (en) * | 2019-11-12 | 2022-06-14 | Oppo广东移动通信有限公司 | Phase difference acquisition method and device and electronic equipment |
| CN112866553B (en) * | 2019-11-12 | 2022-05-17 | Oppo广东移动通信有限公司 | Focusing method and device, electronic equipment and computer readable storage medium |
| CN110769162B (en) | 2019-11-28 | 2021-07-13 | 维沃移动通信有限公司 | Electronic equipment and focusing method |
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| US9338345B2 (en) * | 2014-06-13 | 2016-05-10 | Intel Corporation | Reliability measurements for phase based autofocus |
| US9338380B2 (en) * | 2014-06-30 | 2016-05-10 | Semiconductor Components Industries, Llc | Image processing methods for image sensors with phase detection pixels |
| CN106331499B (en) * | 2016-09-13 | 2019-10-29 | 努比亚技术有限公司 | Focusing method and photographing device |
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| CN102164293A (en) * | 2010-02-16 | 2011-08-24 | 索尼公司 | Image processing device, image processing method, image processing program, and imaging device |
| CN102891963A (en) * | 2011-07-21 | 2013-01-23 | 三星电子株式会社 | Apparatus and method for adjusting focal point by using imaging device for outputting phase difference signal |
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