CN105744167B - Image capturing method, device and mobile terminal - Google Patents
Image capturing method, device and mobile terminal Download PDFInfo
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- CN105744167B CN105744167B CN201610182303.9A CN201610182303A CN105744167B CN 105744167 B CN105744167 B CN 105744167B CN 201610182303 A CN201610182303 A CN 201610182303A CN 105744167 B CN105744167 B CN 105744167B
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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
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Abstract
The invention discloses a kind of image capturing methods, comprising: the location information for obtaining focus point in the image of shooting obtains the distance between each pixel and the focus point in described image according to the location information of the focus point；According to the default mapping relations between the distance and pixel precision, the corresponding pixel precision of each pixel is determined；According to the corresponding pixel precision of each pixel, described image is shot.The invention also discloses a kind of image capturing device and mobile terminals.Mobile terminal of the present invention can be adjusted according to the pixel precision of the distance between pixel and focus point to shooting image, can reduce the file size for generating image, save the memory and resource of mobile terminal.
Description
Technical field
The present invention relates to mobile terminal device technical field more particularly to a kind of image capturing methods, device and movement eventually
End.
Background technique
With the raising for the mobile terminal hardware configuration that can be shot, the pixel of shooting is higher and higher, to mobile whole
The consumption of the hardware memory at end is also to be more and more obvious.In order to promote the hardware store ability of mobile terminal, on the one hand can mention
The memory size of high memory itself, but this method can improve the cost of mobile terminal；On the other hand it is contemplated that reducing shooting
The clarity of image, but this method it is impossible to meet user to shooting precision demand so that user using mobile terminal into
Row shooting is very inconvenient.For example, user is excessively high to the required precision of target object in shooting image, the figure for causing shooting to generate
As the increase of file, and increase the memory consumption of mobile terminal.
Summary of the invention
The main purpose of the present invention is to provide a kind of image capturing method, device and mobile terminals, it is intended to reduce and generate
The file size of image saves the memory and resource of mobile terminal.
To achieve the above object, the present invention provides a kind of image capturing devices, comprising:
Distance obtains module, the location information of focus point in the image for obtaining shooting, according to the position of the focus point
Set the distance between each pixel and the focus point in acquisition of information described image；
Pixel precision determining module, for determining each according to the default mapping relations between the distance and pixel precision
The corresponding pixel precision of a pixel；
Shooting module, for being shot to described image according to the corresponding pixel precision of each pixel.
Optionally, described image filming apparatus further include:
Setup module forms normal distribution or parabolical mapping for presetting between the distance and pixel precision
Relationship；The mapping relations are that the distance between pixel and the focus point are closer, and the pixel precision of the pixel is higher,
The distance between the pixel and the focus point are remoter, and the pixel precision of the pixel is lower.
Optionally, it is described to described image carry out shooting include described image is acquired and to described image at
Reason, the shooting module are also used to, when carrying out Image Acquisition and/or carrying out image procossing, according to each pixel pair
The pixel precision answered is acquired and/or handles to described image, to shoot to described image.
Optionally, described image filming apparatus further include:
Opening module controls mobile terminal according to described instruction and enters for receiving the instruction for opening special shooting function
Special screening-mode is obtained with the location information of focus point in the image to shooting.
In addition, to achieve the above object, the present invention also provides a kind of mobile terminal, the mobile terminal includes above-mentioned knot
The image capturing device of structure.
In addition, to achieve the above object, the present invention also provides a kind of image capturing methods, comprising:
The location information for obtaining focus point in the image of shooting obtains described image according to the location information of the focus point
In the distance between each pixel and the focus point；
According to the default mapping relations between the distance and pixel precision, the corresponding pixel essence of each pixel is determined
Degree；
According to the corresponding pixel precision of each pixel, described image is shot.
Optionally, the default mapping relations according between the distance and pixel precision, determine each pixel
Include: before corresponding pixel precision
It presets and forms normal distribution or parabolical mapping relations between the distance and pixel precision；The mapping
Relationship be the distance between pixel and the focus point it is closer, the pixel precision of the pixel is higher, the pixel and
The distance between the focus point is remoter, and the pixel precision of the pixel is lower.
Optionally, it is described to described image carry out shooting include described image is acquired and to described image at
Reason, described according to the corresponding pixel precision of each pixel, carrying out shooting to described image includes:
When carrying out Image Acquisition and/or carrying out image procossing, according to the corresponding pixel precision pair of each pixel
Described image is acquired and/or handles, to shoot to described image.
Optionally, described when carrying out Image Acquisition and/or carrying out image procossing, it is corresponding according to each pixel
Pixel precision is acquired and/or handles to described image, includes: to carry out shooting to described image
When carrying out Image Acquisition, described image is adopted according to each pixel corresponding first pixel precision
Collection, to be shot to described image；
When carrying out image procossing, according to corresponding second pixel precision of each pixel to described image at
Reason, to be shot to described image.
Optionally, the location information for obtaining focus point in the image shot, according to the location information of the focus point
It obtains in described image and includes: before the distance between each pixel and the focus point
The instruction for opening special shooting function is received, mobile terminal is controlled according to described instruction and enters special screening-mode,
It is obtained with the location information of focus point in the image to shooting.
Mobile terminal of the embodiment of the present invention is during being shot, the position of focus point in the image by obtaining shooting
The distance between each pixel and focus point in confidence breath and image, are closed according to the default mapping between distance and pixel precision
System determines the corresponding pixel precision of each pixel to shoot to image.So that mobile terminal can be according to pixel
The pixel precision of shooting image is adjusted in the distance between focus point, by the precision tune of the remote pixel of Range Focusing point
It is low, the file size for generating image can be reduced, save the memory and resource of mobile terminal.
Detailed description of the invention
The hardware structural diagram of Fig. 1 each embodiment one optional mobile terminal to realize the present invention；
Fig. 2 is the wireless communication device schematic diagram of mobile terminal as shown in Figure 1；
Fig. 3 is the functional block diagram of one embodiment of image capturing device of the present invention；
Fig. 4 is that normal distribution is formed between the distance between pixel and focus point, with pixel precision in image of the present invention
Mapping relations schematic diagram；
Fig. 5 is parabolical to be formed between the distance between pixel and focus point, with pixel precision in image of the present invention
Mapping relations schematic diagram；
Fig. 6 is the flow diagram of one embodiment of image capturing method 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.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The mobile terminal of each embodiment of the present invention is realized in description with reference to the drawings.In subsequent description, use
For indicate element such as " module ", " component " or " unit " suffix only for being conducive to explanation of the invention, itself
There is no specific meanings.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
Phone, smart phone, laptop, PDA (personal digital assistant), PAD (tablet computer), PMP (put by portable multimedia broadcasting
Device), the fixed terminal of the mobile terminal of navigation device etc. and such as number TV, desktop computer etc..Hereinafter it is assumed that eventually
End is mobile terminal.However, it will be understood by those skilled in the art that other than the element for being used in particular for mobile purpose, root
It can also apply to the terminal of fixed type according to the construction of embodiments of the present invention.
The hardware structural diagram of Fig. 1 each embodiment one optional mobile terminal to realize the present invention.
Mobile terminal 100 may include wireless communication unit 110, A/V input unit 120, user input unit 130, defeated
Unit 140, memory 150, controller 160 and power supply unit 170 etc. out.Fig. 1 shows the mobile end with various assemblies
End, it should be understood that being not required for implementing all components shown.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 components, allows mobile terminal 100 and wireless communication device
Or the radio communication between network.For example, wireless communication unit may include mobile communication module 111, wireless Internet mould
At least one of block 112 and short range communication module 113.
Mobile communication module 111 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 112.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 113 is the module for supporting short range communication.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..
A/V input unit 120 is for receiving audio or video signal.A/V input unit 120 may include camera 121, phase
Image of the machine 121 to the static images or video that are obtained in video acquisition mode or image capture mode by image capture apparatus
Data are handled.Treated, and picture frame may be displayed on display unit 141.Through camera 121, treated that picture frame can
It, can be according to shifting to be stored in memory 150 (or other storage mediums) or be sent via wireless communication unit 110
The construction of dynamic terminal provides two or more cameras 121.
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, triggering
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 trigger board is superimposed upon in the form of layer on display unit 141, triggering screen can be formed.
Output unit 140 may include display unit 141, and display unit 141 may be displayed in mobile terminal 100 and handle
Information.For example, when mobile terminal 100 is in telephone calling model, display unit 141 can show and converse or other logical
The relevant user interface (UI) of letter (for example, text messaging, multimedia file downloading etc.) or graphic user interface
(GUI).When mobile terminal 100 is in video calling mode or image capture mode, display unit 141 can show capture
Image and/or received image, the UI or GUI that show video or image and correlation function etc..
Meanwhile when display unit 141 and trigger board the triggering screen superposed on one another with formation in the form of layer, display unit
141 may be used as input unit and output device.Display unit 141 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).Triggering screen can be used for detecting triggering
Input pressure and triggering input position and triggering input area.
Memory 150 can store the software program etc. of the processing and control operation that are executed by controller 160, Huo Zheke
Temporarily to store oneself data (for example, telephone directory, message, still image, video etc.) through exporting or will export.And
And memory 150 can store about the vibration and audio signal for being applied to the various modes exported when triggering is shielded when triggering
Data.
Memory 150 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 150 store function cooperates.
The overall operation of the usually control mobile terminal of controller 160.For example, controller 160 executes and voice communication, data
Communication, video calling etc. relevant control and processing.In addition, controller 160 may include for reproducing (or playback) more matchmakers
The multi-media module 161 of volume data, multi-media module 161 can construct in controller 160, or can be structured as and control
Device 160 separates.Controller 160 can be with execution pattern identifying processing, by the handwriting input executed on triggering screen or picture
It draws input and is identified as character or image.
Power supply unit 170 receives external power or internal power under the control of controller 160 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 160.
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 150 and be executed by controller 160.
So far, oneself is through describing mobile terminal 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 device and satellite-based communication device operate.
Referring now to Fig. 2 description communication device that wherein mobile terminal according to the present invention can operate.
Different air interface and/or physical layer can be used in such communication device.For example, used by communication device
Air interface includes such as frequency division multiple access (FDMA), time division multiple acess (TDMA), CDMA (CDMA) and universal mobile communications dress
Set (UMTS) (particularly, long term evolution (LTE)), global mobile communication device (GSM) etc..As non-limiting example, under
The description in face is related to cdma communication device, but such introduction is equally applicable to other types of device.
With reference to Fig. 2, cdma wireless communication device 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 device 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
Device (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 the device by broadcsting transmitter (BT) 295
100.In fig. 2 it is shown that several global pick device (GPS) satellites 300.The help of satellite 300 positions multiple mobile terminals 100
At least one of.
In Fig. 2, multiple satellites 300 are depicted, but it is understood that, it can use any number of satellite and obtain
Useful location information.It substitutes GPS tracking technique or except GPS tracking technique, can be used can track mobile terminal
Position other technologies.In addition, at least one 300 property of can choose of GPS satellite or extraly processing satellite dmb pass
It is defeated.
As a typical operation of wireless communication device, 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 MSC and BSC275 form interface, and BSC275 controls BS270 correspondingly with by forward link signals
It is sent to mobile terminal 100.
Structure based on above-mentioned mobile terminal hardware configuration, communication device proposes each embodiment of the method for the present invention.
As shown in figure 3, showing a kind of image capturing device first embodiment of the present invention.The image taking of the embodiment fills
It sets and includes:
Distance obtains module 10, the location information of focus point in the image for obtaining shooting, according to the focus point
Location information obtains the distance between each pixel and the focus point in described image；
In the present embodiment, the type of mobile terminal can be configured according to actual needs, for example, the mobile terminal may include
Mobile phone, iPad, camera etc. have the mobile terminal of shooting function.When mobile terminal opens shooting function, into after screening-mode,
Mobile terminal is further obtained by calling distance to obtain the location information of focus point in image of the module 10 by obtaining shooting
Take the distance between each pixel and the focus point in image.It should be noted that this obtain image in each pixel with
The processing method of distance between the focus point, in the camera application that can be used as a kind of screening-mode insertion mobile terminal；Certainly,
It can also be directed to photographed scene and demand, set interface is provided and control parameter choose whether to enable or close.
Pixel precision determining module 20, for determining according to the default mapping relations between the distance and pixel precision
The corresponding pixel precision of each pixel；
In the present embodiment, mobile terminal is built-in with the distance between pre-set pixel and focus point, with pixel essence
Default mapping relations between degree, which can be remoter for the distance between pixel and focus point, real space
Distance it is also remoter, imaging post-process pixel precision it is lower, the distance between pixel and focus point are closer, real space away from
Closer from also, the pixel precision of the post-processing of imaging is lower.It is obtained in image between each pixel and focus point above-mentioned
After distance, pixel precision determining module 20 can obtain each pixel according to the default mapping relations between distance and pixel precision
The corresponding pixel precision of point.
Shooting module 30, for being shot to described image according to the corresponding pixel precision of each pixel.
In obtaining image after the corresponding pixel precision of each pixel, process that shooting module 30 shoots image
In, each pixel can be performed corresponding processing according to corresponding pixel precision, will be illustrated below.
In one embodiment, it is assumed that mobile terminal is preset with the distance between pixel and focus point, with pixel precision it
Between formed normal distribution default mapping relations, the distance between pixel and focus point are closer, and the pixel precision of pixel is got over
Height, on the contrary pixel precision is lower.During mobile terminal is shot, subject is by camera lens in imaging sensor
After imaging, when carrying out Image Acquisition, mobile terminal is according to the default mapping relations of the normal distribution, according to each pixel
Corresponding pixel precision is acquired image, and acquired image information is generated digital signal, then carries out turning for image
It changes, compress etc. after processing and carrying out the storage of image, completion shoots image.It realizes and meets shooting demand in clarity
In the case of, when carrying out Image Acquisition, the acquisition other than focusing to the pixel of subject is reduced as far as possible, to subtract
The size of small shooting image file generated, saves the memory consumption of mobile terminal, while also saving mobile terminal and being clapped
The resource taken the photograph Image Acquisition, transmit data.
In another embodiment, it is assumed that mobile terminal is preset with the distance between pixel and focus point, with pixel precision
Between form parabolical default mapping relations, the distance between pixel and focus point are closer, and the pixel precision of pixel is got over
Height, on the contrary pixel precision is lower.During mobile terminal is shot, subject is by camera lens in imaging sensor
After imaging, image is sampled.After sampling, when carrying out image procossing, mobile terminal is parabolical default according to this
Mapping relations are handled image according to the corresponding pixel precision of each pixel, and by treated, image is stored, complete
At to be shot to image.By the way that the pixel in shooting image other than focusing range, (place of out-focus itself can be with
It is considered not needing to be apparent), reduce the processing accuracy to the pixel according to certain method to generate image, guarantees to focus model
In the case that object definition in enclosing is met the requirements, the image file of shooting itself is made to become smaller as far as possible, saved
The memory consumption of mobile terminal, while also saving the resource that mobile terminal carries out image procossing.
Mobile terminal of the embodiment of the present invention is during being shot, the position of focus point in the image by obtaining shooting
The distance between each pixel and focus point in confidence breath and image, are closed according to the default mapping between distance and pixel precision
System determines the corresponding pixel precision of each pixel to shoot to image.So that mobile terminal can be according to pixel
The pixel precision of shooting image is adjusted in the distance between focus point, by the precision tune of the remote pixel of Range Focusing point
It is low, the file size for generating image can be reduced, save the memory and resource of mobile terminal.
Further, it is based on above-mentioned image capturing device first embodiment, proposes image capturing device second of the present invention
Embodiment, above-mentioned image capturing device in the embodiment further include:
Setup module forms normal distribution or parabolical mapping for presetting between the distance and pixel precision
Relationship；The mapping relations are that the distance between pixel and the focus point are closer, and the pixel precision of the pixel is higher,
The distance between the pixel and the focus point are remoter, and the pixel precision of the pixel is lower.
In the present embodiment, the distance between pixel and focus point is can be preset in setup module, between pixel precision
Default mapping relations, by establishing space coordinate, the central point of focus point as space coordinate when shooting image (is sat
Mark origin), using the plane where image as reference axis, by parabola or the function algorithm of normal distribution, establish the distance
Functional relation between pixel precision, the processes pixel of Lai Jinhang image.It is understood that the distance and pixel precision it
Between can also form the mapping relations of other function algorithms, it is higher to meet the nearlyr pixel precision of distance, otherwise the remoter pixel of distance
Precision is lower, does not limit the present invention.
In one embodiment, as shown in figure 4, being normal distribution curve coordinate schematic diagram, with the position of focus point in image
Space coordinate function is established for coordinate origin O, X-axis indicates the distance between pixel and focus point, and Y-axis indicates pixel precision
Size.Figure 4, it is seen that when carrying out image taking, the pixel precision highest of focus point (origin) and is focused pixel
The distance between point is closer, i.e., is more proximate to focus point, higher to the pixel precision of image procossing, right far from focus point
The pixel precision of image procossing is lower.
In another embodiment, as shown in figure 5, being parabola (quadratic function relation) coordinate schematic diagram, to gather in image
The position of focus is that coordinate origin O establishes space coordinate function, and X-axis indicates the distance between pixel and focus point, and Y-axis indicates
The size of pixel precision.From figure 5 it can be seen that when carrying out image taking, the pixel precision highest of focus point, pixel with
The distance between focus point is closer, i.e., is more proximate to focus point, higher to the pixel precision of image procossing, far from focusing
Point is lower to the pixel precision of image procossing.
The mobile terminal of this embodiment can be formed between pixel precision according to the distance between each pixel and focus point
Normal distribution or parabolical mapping relations handle each pixel, carry out image taking.By in shooting image
The pixel other than point range is focused according to normal distribution or parabolical function algorithm, the precision for reducing non-focusing pixel is raw
It at shooting image, can not only guarantee that the object definition in focusing range is met the requirements, and make the file for shooting image
Become smaller, saves the memory consumption of mobile terminal.
Further, it is based on above-mentioned image capturing device second embodiment, proposes image capturing device third of the present invention
Embodiment, above-mentioned shooting module 30 is also used in the embodiment, when carrying out Image Acquisition and/or carrying out image procossing, according to
The corresponding pixel precision of each pixel is acquired and/or handles to described image, to shoot to described image.
In the present embodiment, carrying out shooting to image includes being acquired to image and handling etc. image, is shot
The basic principle of journey are as follows: after subject is imaged in imaging sensor by camera lens, image sampling is carried out, it then will acquisition
The image information arrived generates digital signal, carries out the conversion of image, the processing such as compression, finally image is deposited by treated
Storage.
Therefore, process image shot according to each pixel corresponding pixel precision in above-mentioned shooting module 30
In, it may include following style of shooting: mode one, can only when carrying out Image Acquisition, shooting module 30 according to each pixel with
Default mapping relations between the distance between focus point, with pixel precision obtain the corresponding pixel precision pair of each pixel
Image is acquired.Further away from focus point, the pixel of acquisition is fewer, and closer to focus point, the pixel of acquisition is more, so as to
Mobile terminal reduces the pixel precision acquired to the pixel far from focusing range.Mode two is only when performing image processing clapped
Module 30 is taken the photograph according to the distance between each pixel and focus point, the default mapping relations between pixel precision obtain each
The corresponding pixel precision of a pixel handles image.Further away from focus point, the precision that image generates is lower, closer to poly-
Focus, the precision that image generates is higher, so that mobile terminal reduces the pixel precision handled the pixel far from focusing range.
Mode three, when carrying out Image Acquisition and carrying out image procossing, shooting module 30 is all in accordance with the corresponding pixel essence of each pixel
Degree is acquired and is handled accordingly to image.
The present embodiment, mobile terminal can carry out Image Acquisition and/or carry out figure during shooting to image
When as processing, described image is acquired and/or is handled according to each pixel corresponding pixel precision.It realizes clear
In the case that degree meets shooting demand, the acquisition other than focusing to the pixel of subject and/or place are reduced as far as possible
Reason, to reduce the file size for shooting image generated, saves the memory consumption of mobile terminal, while also saving mobile whole
The resource that end carries out shooting Image Acquisition, transmits data.
Further, it is based on above-mentioned image capturing device 3rd embodiment, proposes image capturing device the 4th of the present invention
Embodiment, above-mentioned shooting module 30 is also used in the embodiment, corresponding according to each pixel when carrying out Image Acquisition
The first pixel precision described image is acquired, to be shot to described image；
When carrying out image procossing, according to corresponding second pixel precision of each pixel to described image at
Reason, to be shot to described image.
In the present embodiment, in above-mentioned shooting module 30 according to the default mapping relations between distance and pixel precision, obtain
During the corresponding pixel precision of each pixel shoots image, if mobile terminal is carrying out Image Acquisition and progress
When image procossing, image is acquired and handled accordingly all in accordance with each pixel corresponding pixel precision, then shoots mould
Block 30 can preset at least two different default mapping relations.When carrying out Image Acquisition, shooting module 30 is default according to first
Mapping relations are acquired image according to corresponding first pixel precision of each pixel；When carrying out image procossing, shooting
Module 30 is handled image according to corresponding second pixel precision of each pixel according to the second default mapping relations.
Certainly, when only when carrying out Image Acquisition or carrying out image procossing, shooting module 30 also can be set different pre-
If mapping relations, obtains each pixel corresponding pixel precision and image is acquired or is handled.It is understood that when into
When row Image Acquisition and/or progress image procossing, shooting module 30 can be all made of identical default mapping relations, according to each picture
The corresponding pixel precision of vegetarian refreshments is acquired and/or is handled accordingly to image.When mobile terminal stores a variety of different preset
When mapping relations, it is possible to provide specified set interface carries out image taking for the one such default mapping relations of user's selection.
Distance and pixel can be respectively set when carrying out Image Acquisition and carrying out image procossing in the mobile terminal of this embodiment
Different default mapping relations between precision, image is acquired or be located according to each pixel corresponding pixel precision
Reason.The precision by the remote pixel of Range Focusing point can be selected to turn down according to demand, the file size for generating image, section can be reduced
The memory and resource of mobile terminal are saved.
Further, based on any embodiment in above-mentioned first to fourth embodiment of image capturing device, this is proposed
The 5th embodiment of invention image capturing device, above-mentioned image capturing device in the embodiment further include:
Opening module controls mobile terminal according to described instruction and enters for receiving the instruction for opening special shooting function
Special screening-mode is obtained with the location information of focus point in the image to shooting.
In the present embodiment, special shooting function refer to it is above-mentioned according between pixel each in image and the focus point away from
From default mapping relations between pixel precision, to determine that the corresponding pixel precision of each pixel claps image
It takes the photograph.For the image capturing method, in the camera application that can be used as a kind of screening-mode insertion mobile terminal, mobile terminal
Specified set interface can be provided, for receiving the instruction for opening or closing special shooting function, controlled by opening module
Whether system enables or closes the special shooting function.Before carrying out image taking, user can be directed to photographed scene and demand, open
Special shooting function is opened, control mobile terminal enters special screening-mode, shoots to image.When user do not need according to away from
When being adjusted from pixel precision of the mapping relations between pixel precision to shooting, special shooting function can be closed in selection
Energy.Mobile terminal can also provide parameter setting interface, for related acquisition parameters of the user setting under the special screening-mode.
The mobile terminal of this embodiment can provide set interface and open or close to special shooting function, facilitate user
According to specific actual conditions, for photographed scene and demand, selection uses the special shooting function, and the user experience is improved, mentions
High mobile terminal carries out the convenience of image taking.
Accordingly, a kind of mobile terminal of the present invention is proposed, which includes the image capturing device of above structure, should
The working principle and implementation of image capturing device can refer to Fig. 3 to Fig. 5 and its corresponding embodiment, contain institute therein
There is technical characteristic, therefore not to repeat here.The mobile terminal can be mobile phone, iPad, camera etc..Mobile terminal embodiment of the present invention
In, since with above-mentioned mobile terminal, during being shot, the position of focus point is believed in the image by obtaining shooting
The distance between each pixel and focus point in breath and image, it is true according to the default mapping relations between distance and pixel precision
The corresponding pixel precision of each pixel is determined to shoot to image.So that mobile terminal can be according to pixel and poly-
The pixel precision of shooting image is adjusted in the distance between focus, and the precision of the remote pixel of Range Focusing point is turned down,
The file size for generating image can be reduced, save the memory and resource of mobile terminal.
Accordingly, as shown in fig. 6, proposing a kind of image capturing method first embodiment of the present invention.The image of the embodiment
Image pickup method includes:
Step S10, the location information for obtaining focus point in the image of shooting, obtains according to the location information of the focus point
The distance between each pixel and the focus point in described image；
In the present embodiment, the type of mobile terminal can be configured according to actual needs, for example, the mobile terminal may include
Mobile phone, iPad, camera etc. have the mobile terminal of shooting function.When mobile terminal opens shooting function, into after screening-mode,
Mobile terminal further obtains each pixel in image by obtaining the location information of focus point in the image shot and should
The distance between focus point.It should be noted that this obtains the processing of distance between each pixel and the focus point in image
Method, in the camera application that can be used as a kind of screening-mode insertion mobile terminal；Certainly, it for photographed scene and can also need
It asks, set interface is provided and control parameter choose whether to enable or close.
Step S20, according to the default mapping relations between the distance and pixel precision, the correspondence of each pixel is determined
Pixel precision；
In the present embodiment, mobile terminal is built-in with the distance between pre-set pixel and focus point, with pixel essence
Default mapping relations between degree, which can be remoter for the distance between pixel and focus point, real space
Distance it is also remoter, imaging post-process pixel precision it is lower, the distance between pixel and focus point are closer, real space away from
Closer from also, the pixel precision of the post-processing of imaging is lower.It is obtained in image between each pixel and focus point above-mentioned
After distance, the corresponding pixel precision of each pixel can be obtained according to the default mapping relations between distance and pixel precision.
Step S30, according to the corresponding pixel precision of each pixel, described image is shot.
It, can basis during being shot to image in obtaining image after the corresponding pixel precision of each pixel
Corresponding pixel precision performs corresponding processing each pixel, will be illustrated below.
In one embodiment, it is assumed that mobile terminal is preset with the distance between pixel and focus point, with pixel precision it
Between formed normal distribution default mapping relations, the distance between pixel and focus point are closer, and the pixel precision of pixel is got over
Height, on the contrary pixel precision is lower.During mobile terminal is shot, subject is by camera lens in imaging sensor
After imaging, when carrying out Image Acquisition, mobile terminal is according to the default mapping relations of the normal distribution, according to each pixel
Corresponding pixel precision is acquired image, and acquired image information is generated digital signal, then carries out turning for image
It changes, compress etc. after processing and carrying out the storage of image, completion shoots image.It realizes and meets shooting demand in clarity
In the case of, when carrying out Image Acquisition, the acquisition other than focusing to the pixel of subject is reduced as far as possible, to subtract
The size of small shooting image file generated, saves the memory consumption of mobile terminal, while also saving mobile terminal and being clapped
The resource taken the photograph Image Acquisition, transmit data.
In another embodiment, it is assumed that mobile terminal is preset with the distance between pixel and focus point, with pixel precision
Between form parabolical default mapping relations, the distance between pixel and focus point are closer, and the pixel precision of pixel is got over
Height, on the contrary pixel precision is lower.During mobile terminal is shot, subject is by camera lens in imaging sensor
After imaging, image is sampled.After sampling, when carrying out image procossing, mobile terminal is parabolical default according to this
Mapping relations are handled image according to the corresponding pixel precision of each pixel, and by treated, image is stored, complete
At to be shot to image.By the way that the pixel in shooting image other than focusing range, (place of out-focus itself can be with
It is considered not needing to be apparent), reduce the processing accuracy to the pixel according to certain method to generate image, guarantees to focus model
In the case that object definition in enclosing is met the requirements, the image file of shooting itself is made to become smaller as far as possible, saved
The memory consumption of mobile terminal, while also saving the resource that mobile terminal carries out image procossing.
Mobile terminal of the embodiment of the present invention is during being shot, the position of focus point in the image by obtaining shooting
The distance between each pixel and focus point in confidence breath and image, are closed according to the default mapping between distance and pixel precision
System determines the corresponding pixel precision of each pixel to shoot to image.So that mobile terminal can be according to pixel
The pixel precision of shooting image is adjusted in the distance between focus point, by the precision tune of the remote pixel of Range Focusing point
It is low, the file size for generating image can be reduced, save the memory and resource of mobile terminal.
Further, it is based on above-mentioned image capturing method first embodiment, proposes image capturing method second of the present invention
Embodiment, in the embodiment before above-mentioned steps S20 can include: preset and form normal state between the distance and pixel precision
Distribution or parabolical mapping relations；The mapping relations are that the distance between pixel and the focus point are closer, the picture
The pixel precision of vegetarian refreshments is higher, and the distance between the pixel and the focus point are remoter, the pixel precision of the pixel
It is lower.
In the present embodiment, the distance between pixel and focus point is can be preset in mobile terminal, between pixel precision
Default mapping relations, by establishing space coordinate, the central point of focus point as space coordinate when shooting image (is sat
Mark origin), using the plane where image as reference axis, by parabola or the function algorithm of normal distribution, establish the distance
Functional relation between pixel precision, the processes pixel of Lai Jinhang image.It is understood that the distance and pixel precision it
Between can also form the mapping relations of other function algorithms, it is higher to meet the nearlyr pixel precision of distance, otherwise the remoter pixel of distance
Precision is lower, does not limit the present invention.
In one embodiment, as shown in figure 4, being normal distribution curve coordinate schematic diagram, with the position of focus point in image
Space coordinate function is established for coordinate origin O, X-axis indicates the distance between pixel and focus point, and Y-axis indicates pixel precision
Size.Figure 4, it is seen that when carrying out image taking, the pixel precision highest of focus point (origin) and is focused pixel
The distance between point is closer, i.e., is more proximate to focus point, higher to the pixel precision of image procossing, right far from focus point
The pixel precision of image procossing is lower.
In another embodiment, as shown in figure 5, being parabola (quadratic function relation) coordinate schematic diagram, to gather in image
The position of focus is that coordinate origin O establishes space coordinate function, and X-axis indicates the distance between pixel and focus point, and Y-axis indicates
The size of pixel precision.From figure 5 it can be seen that when carrying out image taking, the pixel precision highest of focus point, pixel with
The distance between focus point is closer, i.e., is more proximate to focus point, higher to the pixel precision of image procossing, far from focusing
Point is lower to the pixel precision of image procossing.
The mobile terminal of this embodiment can be formed between pixel precision according to the distance between each pixel and focus point
Normal distribution or parabolical mapping relations handle each pixel, carry out image taking.By in shooting image
The pixel other than point range is focused according to normal distribution or parabolical function algorithm, the precision for reducing non-focusing pixel is raw
It at shooting image, can not only guarantee that the object definition in focusing range is met the requirements, and make the file for shooting image
Become smaller, saves the memory consumption of mobile terminal.
Further, it is based on above-mentioned image capturing method second embodiment, proposes image capturing method third of the present invention
Embodiment, above-mentioned steps S30 in the embodiment can include: when carrying out Image Acquisition and/or carrying out image procossing, according to described
The corresponding pixel precision of each pixel is acquired and/or handles to described image, to shoot to described image.
In the present embodiment, carrying out shooting to image includes being acquired to image and handling etc. image, is shot
The basic principle of journey are as follows: after subject is imaged in imaging sensor by camera lens, image sampling is carried out, it then will acquisition
The image information arrived generates digital signal, carries out the conversion of image, the processing such as compression, finally image is deposited by treated
Storage.
Therefore, process image shot according to each pixel corresponding pixel precision in above-mentioned mobile terminal
In, it may include following style of shooting: mode one, it can be only when carrying out Image Acquisition, mobile terminal is according to each pixel and gathers
Default mapping relations between the distance between focus, with pixel precision obtain the corresponding pixel precision of each pixel to figure
As being acquired.Further away from focus point, the pixel of acquisition is fewer, and closer to focus point, the pixel of acquisition is more, to move
Dynamic terminal reduces the pixel precision acquired to the pixel far from focusing range.Mode two, it is only when performing image processing, mobile
Terminal is according to the distance between each pixel and focus point, and default mapping relations between pixel precision obtain each picture
The corresponding pixel precision of vegetarian refreshments handles image.Further away from focus point, the precision that image generates is lower, closer to focusing
Point, the precision that image generates is higher, so that mobile terminal reduces the pixel precision handled the pixel far from focusing range.Side
Formula three, when carrying out Image Acquisition and carrying out image procossing, mobile terminal is all in accordance with the corresponding pixel precision pair of each pixel
Image is acquired and is handled accordingly.
The present embodiment, mobile terminal can carry out Image Acquisition and/or carry out figure during shooting to image
When as processing, described image is acquired and/or is handled according to each pixel corresponding pixel precision.It realizes clear
In the case that degree meets shooting demand, the acquisition other than focusing to the pixel of subject and/or place are reduced as far as possible
Reason, to reduce the file size for shooting image generated, saves the memory consumption of mobile terminal, while also saving mobile whole
The resource that end carries out shooting Image Acquisition, transmits data.
Further, it is based on above-mentioned image capturing method 3rd embodiment, proposes image capturing method the 4th of the present invention
Embodiment, it is above-mentioned when carrying out Image Acquisition and/or carrying out image procossing in the embodiment, it is corresponding according to each pixel
Pixel precision the step of described image is acquired and/or is handled can include:
When carrying out Image Acquisition, described image is adopted according to each pixel corresponding first pixel precision
Collection, to be shot to described image；
When carrying out image procossing, according to corresponding second pixel precision of each pixel to described image at
Reason, to be shot to described image.
In the present embodiment, in the above-mentioned default mapping relations according between distance and pixel precision, each pixel is obtained
During corresponding pixel precision shoots image, if mobile terminal is carrying out Image Acquisition and is carrying out image procossing
When, image is acquired and handled accordingly all in accordance with each pixel corresponding pixel precision, then mobile terminal can be preset
At least two different default mapping relations.When carrying out Image Acquisition, mobile terminal according to the first default mapping relations, according to
Corresponding first pixel precision of each pixel is acquired image；When carrying out image procossing, mobile terminal is according to second
Default mapping relations, are handled image according to corresponding second pixel precision of each pixel.
Certainly, when only when carrying out Image Acquisition or carrying out image procossing, different preset also is can be set in mobile terminal
Mapping relations obtain each pixel corresponding pixel precision and image are acquired or are handled.It is understood that when carrying out
When Image Acquisition and/or progress image procossing, mobile terminal can be all made of identical default mapping relations, according to each pixel
Corresponding pixel precision is acquired and/or is handled accordingly to image.When mobile terminal stores a variety of different default mappings
When relationship, it is possible to provide specified set interface carries out image taking for the one such default mapping relations of user's selection.
Distance and pixel can be respectively set when carrying out Image Acquisition and carrying out image procossing in the mobile terminal of this embodiment
Different default mapping relations between precision, image is acquired or be located according to each pixel corresponding pixel precision
Reason.The precision by the remote pixel of Range Focusing point can be selected to turn down according to demand, the file size for generating image, section can be reduced
The memory and resource of mobile terminal are saved.
Further, based on any embodiment in above-mentioned first to fourth embodiment of image capturing method, this is proposed
The 5th embodiment of invention image capturing method, in the embodiment before above-mentioned steps S10 can include: receive and open special shooting function
The instruction of energy controls mobile terminal according to described instruction and enters special screening-mode, with the position of focus point in the image to shooting
Confidence breath is obtained.
In the present embodiment, special shooting function refer to it is above-mentioned according between pixel each in image and the focus point away from
From default mapping relations between pixel precision, to determine that the corresponding pixel precision of each pixel claps image
It takes the photograph.For the image capturing method, in the camera application that can be used as a kind of screening-mode insertion mobile terminal, mobile terminal
Specified set interface can be provided, for receiving the instruction for opening or closing special shooting function, carry out controlling whether to enable
Or close the special shooting function.Before carrying out image taking, user can be directed to photographed scene and demand, open special shooting
Function, control mobile terminal enter special screening-mode, shoot to image.When user does not need according to distance and pixel essence
When the pixel precision of shooting is adjusted in mapping relations between degree, special shooting function can be closed in selection.Mobile terminal
Parameter setting interface can also be provided, for related acquisition parameters of the user setting under the special screening-mode.
The mobile terminal of this embodiment can provide set interface and open or close to special shooting function, facilitate user
According to specific actual conditions, for photographed scene and demand, selection uses the special shooting function, and the user experience is improved, mentions
High mobile terminal carries out the convenience of image taking.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, computer, clothes
Business device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of image capturing device, which is characterized in that described image filming apparatus includes:
Distance obtains module, and the location information of focus point, believes according to the position of the focus point in the image for obtaining shooting
Breath obtains the distance between each pixel and the focus point in described image；
Pixel precision determining module, for determining each picture according to the default mapping relations between the distance and pixel precision
The corresponding pixel precision of vegetarian refreshments, the mapping relations are that the distance between pixel and the focus point are closer, the pixel
The pixel precision of point is higher, and the distance between the pixel and the focus point are remoter, and the pixel precision of the pixel is got over
It is low；
Shooting module, for being shot to described image according to the corresponding pixel precision of each pixel.
2. image capturing device as described in claim 1, which is characterized in that described image filming apparatus further include:
Setup module forms normal distribution or parabolical mapping pass for presetting between the distance and pixel precision
System.
3. image capturing device as claimed in claim 2, which is characterized in that it is described to described image carry out shooting include to institute
It states image to be acquired and handle described image, the shooting module is also used to, when progress Image Acquisition and/or progress
When image procossing, described image is acquired and/or is handled according to each pixel corresponding pixel precision, to institute
Image is stated to be shot.
4. image capturing device as claimed in any one of claims 1-3, which is characterized in that described image filming apparatus also wraps
It includes:
Opening module, for receiving the instruction for opening special shooting function, it is special to be entered according to described instruction control mobile terminal
Screening-mode is obtained with the location information of focus point in the image to shooting.
5. a kind of mobile terminal, which is characterized in that the mobile terminal includes scheming according to any one of claims 1 to 4
As filming apparatus.
6. a kind of image capturing method, which is characterized in that described image image pickup method the following steps are included:
The location information for obtaining focus point in the image of shooting obtains each in described image according to the location information of the focus point
The distance between a pixel and the focus point；
According to the default mapping relations between the distance and pixel precision, the corresponding pixel precision of each pixel is determined,
The mapping relations are that the distance between pixel and the focus point are closer, and the pixel precision of the pixel is higher, described
The distance between pixel and the focus point are remoter, and the pixel precision of the pixel is lower；
According to the corresponding pixel precision of each pixel, described image is shot.
7. image capturing method as claimed in claim 6, which is characterized in that described according between the distance and pixel precision
Default mapping relations, include: before the corresponding pixel precision for determining each pixel
It presets and forms normal distribution or parabolical mapping relations between the distance and pixel precision.
8. image capturing method as claimed in claim 7, which is characterized in that it is described to described image carry out shooting include to institute
Image is stated to be acquired and handle described image, it is described according to the corresponding pixel precision of each pixel, to institute
It states image and shoot and include:
When carrying out Image Acquisition and/or carrying out image procossing, according to the corresponding pixel precision of each pixel to described
Image is acquired and/or handles, to shoot to described image.
9. image capturing method as claimed in claim 8, which is characterized in that described to work as progress Image Acquisition and/or carry out figure
When as processing, described image is acquired and/or is handled according to each pixel corresponding pixel precision, to described
Image carries out shooting
When carrying out Image Acquisition, described image is acquired according to each pixel corresponding first pixel precision,
To be shot to described image；
When carrying out image procossing, described image is handled according to each pixel corresponding second pixel precision,
To be shot to described image.
10. the image capturing method as described in any one of claim 6-9, which is characterized in that the image for obtaining shooting
The location information of middle focus point obtains each pixel and the focusing in described image according to the location information of the focus point
Include: before the distance between point
The instruction for opening special shooting function is received, mobile terminal is controlled according to described instruction and enters special screening-mode, with right
The location information of focus point is obtained in the image of shooting.
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| CN108337425B (en) * | 2017-01-19 | 2020-06-19 | 宏碁股份有限公司 | Image capturing device and focusing method thereof |
| CN110278382B (en) * | 2019-07-22 | 2020-12-08 | 浙江大华技术股份有限公司 | Focusing method, device, electronic equipment and storage medium |
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