CN105979235A - Image processing method and terminal - Google Patents
Image processing method and terminal Download PDFInfo
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- CN105979235A CN105979235A CN201610367533.2A CN201610367533A CN105979235A CN 105979235 A CN105979235 A CN 105979235A CN 201610367533 A CN201610367533 A CN 201610367533A CN 105979235 A CN105979235 A CN 105979235A
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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
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
- H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
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- Engineering & Computer Science (AREA)
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Abstract
The embodiment of the invention discloses an image processing method. With the method, post processing of an image can be adjusted freely; and a picture presenting effect of image processing can be improved. The method comprises: original RAW data of a to-be-processed image are obtained; according to a preset strategy, a key shooting parameter in the original RAW data is calculated; the key shooting parameter and the original RAW data are written into an RAW file based on a preset coding specification; the RAW file is opened by using a third-party application and an RAW image file is generated; and post image processing is carried out on the RAW image file. In addition, the embodiment of the invention also discloses a terminal.
Description
Technical field
The present invention relates to the image processing techniques in field of information processing, particularly relate to a kind of image processing method
And terminal.
Background technology
Along with the development of electronics technology, there is the development of terminal especially picture pick-up device of shoot function also
It is to advance by leaps and bounds, so that user's wanting the picture quality (such as, real colour degree) of picture pick-up device
Ask more and more higher.
In prior art, for the image shot through picture pick-up device due to the temperature difference or illumination etc. reason,
Need after imaging to carry out corresponding parameter regulation (after-treatment), such that image is more true to nature, color is trueer
Real.
But, use the image processing method of prior art, due to imaging image after being compressed
Have lost scene information in the image of the forms such as jpg, therefore, the image quality deterioration caused can be more, so, and will
The image of imaging can reduce due to image quality through after-treatment, the regulation carrying out color and brightness, make
The effect becoming Secondary Control is poor.
Summary of the invention
For solving above-mentioned technical problem, embodiment of the present invention expectation provides a kind of image processing method and terminal,
The later stage that can freely regulate image processes, and the picture improving image procossing presents effect.
The technical scheme is that and be achieved in that:
A kind of image processing method that the embodiment of the present invention provides, including:
Obtain the original RAW data of pending image；
According to preset strategy, calculate the crucial acquisition parameters in described original RAW data；
By civilian according to pre-arranged code specification write RAW to described crucial acquisition parameters and described original RAW data
In part；
Utilize third-party application to open described RAW file, generate the image file of RAW；
The image file of described RAW is carried out the process of image later stage.
In such scheme, described according to preset strategy, calculate the crucial bat in described original RAW data
Take the photograph parameter, including:
According to preset strategy, calculate the gain parameter of white balance of described original RAW data, colour switching
At least one in matrix parameter.
In such scheme, described utilize third-party application to open described RAW file, generate the figure of RAW
Picture file, including:
Utilize described third-party application that the crucial acquisition parameters in described RAW file is resolved；
In described third-party application, adjust described original RAW according to the described crucial acquisition parameters after resolving
Data, generate the image file of described RAW.
In such scheme, described by described crucial acquisition parameters and described original RAW data according to presetting
In coding criterion write RAW file, including:
Described crucial acquisition parameters and described original RAW data are write RAW according to DNG coding criterion
In file.
In such scheme, the described image file to described RAW carries out image later stage process, including:
The image file of described RAW is carried out at least one in the color of image, contrast and brightness
Reason.
A kind of terminal that the embodiment of the present invention provides, including:
Acquiring unit, for obtaining the original RAW data of pending image；
Computing unit, for according to preset strategy, calculating the described original RAW that described acquiring unit obtains
Crucial acquisition parameters in data；
Writing unit, for the described crucial acquisition parameters calculated by described computing unit and described acquiring unit
The described original RAW data obtained are according in pre-arranged code specification write RAW file；
Signal generating unit, for utilizing third-party application to open the described RAW file that said write unit is finished writing,
Generate the image file of RAW；
Processing unit, after the image file of the described RAW for generating described signal generating unit carries out image
Phase processes.
In above-mentioned terminal, described computing unit, specifically for according to preset strategy, calculate described acquisition single
In the gain parameter of white balance of described original RAW data of unit's acquisition, colour switching matrix parameter extremely
Few one.
In above-mentioned terminal, described terminal also includes: resolution unit；
Described resolution unit, for utilizing described in described computing unit calculates by described third-party application
Crucial acquisition parameters in RAW file resolves；
Described signal generating unit, specifically in described third-party application, according to described resolution unit from described
The described crucial acquisition parameters that writing unit parses adjusts the described original RAW of said write unit write
Data, generate the image file of described RAW.
In above-mentioned terminal, said write unit, specifically for the described key calculated by described computing unit
The described original RAW data that acquisition parameters and described acquiring unit obtain write according to DNG coding criterion
In RAW file.
In above-mentioned terminal, described processing unit, specifically for the described RAW generating described signal generating unit
Image file carry out in the color of image, contrast and brightness at least one process.
Embodiments provide a kind of image processing method and terminal, by obtaining the former of pending image
Beginning RAW data；According to preset strategy, calculate the crucial acquisition parameters in original RAW data；By key
Acquisition parameters and original RAW data are according in pre-arranged code specification write RAW file；Third party is utilized to answer
With opening RAW file, generate the image file of RAW；The image file of RAW is carried out the image later stage
Process.Use above-mentioned technic relization scheme, make the 3rd owing to original RAW data are carried out Unified coding
Fang Yingyong can resolve RAW file, such that it is able to RAW file carries out imaging process obtain RAW figure
As file, after directly generating and use RAW image file to carry out as image in third-party application
The object that phase processes, and the deterioration of RAW file data is less, therefore, at this third-party application to image
Can reduce without having to worry about image quality and regulate color and the brightness of image more freely, when carrying out later stage process
Reach best image processing effect, thus the picture improving image procossing presents effect.
Accompanying drawing explanation
Fig. 1 is the hardware architecture diagram realizing a kind of optional terminal of each embodiment of the present invention；
Fig. 2 is the communication system that the mobile terminal of the present invention is operable to；
The flow chart of a kind of image processing method that Fig. 3 provides for the embodiment of the present invention；
The structural representation of the pixel arrangements that Fig. 4 provides for the embodiment of the present invention；
The CMOS photon sensing schematic diagram that Fig. 5 provides for the embodiment of the present invention；
The exemplary original RAW data imaging figure that Fig. 6 provides for the embodiment of the present invention；
The data structure schematic diagram of the TIFF that Fig. 7 provides for the embodiment of the present invention；
The exemplary RAW document data flow that Fig. 8 provides for the embodiment of the present invention；
The exemplary RAW file after third party processes that Fig. 9 provides for the embodiment of the present invention is according to one-tenth
As figure；
The structural representation one of a kind of terminal that Figure 10 provides for the embodiment of the present invention；
The structural representation two of a kind of terminal that Figure 11 provides for the embodiment of the present invention；
The structural representation three of a kind of terminal that Figure 12 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by.
The mobile terminal realizing each embodiment of the present invention is described referring now to accompanying drawing.In follow-up description,
Use the suffix of such as " module ", " parts " or " unit " for representing element only for being conducive to this
The explanation of invention, itself does not has specific meaning.Therefore, " module " and " parts " can be mixedly
Use.
It should be noted that a kind of focus acquisition device that the embodiment of the present invention provides can be terminal, such as
Computer or mobile terminal etc. can use the electronic equipment of browser.
Wherein, mobile terminal can be implemented in a variety of manners.Such as, the terminal described in the present invention is permissible
Including such as mobile phone, smart phone, notebook computer, digit broadcasting receiver, personal digital assistant
(PDA), the shifting of panel computer (PAD), portable media player (PMP), guider etc.
The fixed terminal of dynamic terminal and such as numeral TV, desk computer etc..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 the element of mobile purpose,
Structure according to the embodiment of the present invention can also apply to the terminal of fixed type.
Fig. 1 is the hardware configuration signal realizing a kind of optional mobile terminal of each embodiment of the present invention.
Mobile terminal 1 can include wireless communication unit 110, audio/video (A/V) input block 120,
User input unit 130, sensing unit 140, output unit 150, memorizer 160, interface unit 170,
Controller 180 and power subsystem 190 etc..Fig. 1 shows the mobile terminal with various assembly, but
It it should be understood that, it is not required that implement all assemblies illustrated.Can alternatively implement more or less of group
Part.Will be discussed in more detail below the element of mobile terminal.
Wireless communication unit 110 generally includes one or more assembly, and it allows mobile terminal 1 and channel radio
Radio communication between communication system or network.Such as, wireless communication unit can include mobile communication module
112, at least in wireless Internet module 113, short range communication module 114 and positional information module 115
Individual.
Mobile communication module 112 send radio signals to base station (such as, access point, node B etc.),
In exterior terminal and server at least one and/or receive from it radio signal.Such aerogram
Number can include voice call signal, video calling signal or send according to text and/or Multimedia Message
And/or the various types of data received.
Wireless Internet module 113 supports the Wi-Fi (Wireless Internet Access) of mobile terminal.This module can internal or
Externally it is couple to terminal.Wi-Fi (Wireless Internet Access) technology involved by this module can include WLAN (nothing
Line LAN) (Wi-Fi), Wibro (WiMAX), Wimax (worldwide interoperability for microwave access), HSDPA
(high-speed downlink packet access) etc..
Short range communication module 114 is the module for supporting junction service.Some examples of short-range communication technology
Including bluetoothTM, RF identification (RFID), Infrared Data Association (IrDA), ultra broadband (UWB), purple
HoneybeeTMEtc..
Positional information module 115 is the module of positional information for checking or obtain mobile terminal.Position is believed
The typical case of breath module is global positioning system (GPS) module.According to current technology, GPS module
Calculating should from the range information of three or more satellites and correct time information and the information for calculating
With triangulation, thus according to longitude, latitude with highly accurately calculate three-dimensional current location information.When
Before, use three satellites and by using other one to defend for calculating the method for position and temporal information
Star corrects the position and the error of temporal information calculated.Additionally, GPS module can be by the most continuous
Calculate current location information and calculate velocity information.
A/V input block 120 is used for receiving audio or video signal.A/V input block 120 can include
Camera 121, camera 121 is obtained by image capture apparatus in Video Capture pattern or image capture mode
Static images or the view data of video process.Picture frame after process may be displayed on display unit
On 151.Picture frame after camera 121 processes can be stored in memorizer 160 (or other storage medium)
In or be transmitted via wireless communication unit 110, can according to the structure of mobile terminal provide two or
More polyphaser 121.
It is mobile whole to control that user input unit 130 can generate key input data according to the order of user's input
The various operations of end.User input unit 130 allows user to input various types of information, and can wrap
Include keyboard, metal dome, touch pad (such as, detection due to touched and cause resistance, pressure, electric capacity
Etc. the sensitive component of change), roller, rocking bar etc..Especially, when touch pad superposition as a layer
Time on display unit 151, touch screen can be formed.
Sensing unit 140 detects the current state of mobile terminal 1, and (such as, beating of mobile terminal 1 opens or closes
Closed state), the position of mobile terminal 1, user is for the contact (that is, touch input) of mobile terminal 1
With or without, the orientation of mobile terminal 1, the acceleration or deceleration of mobile terminal 1 move and direction etc., and raw
Become order or the signal being used for controlling the operation of mobile terminal 1.Such as, it is embodied as sliding when mobile terminal 1
During type mobile phone, sensing unit 140 can sense this sliding-type phone and open or close.It addition,
Sensing unit 140 can detect whether power subsystem 190 provides electric power or interface unit 170 whether with outward
Part device couples.Sensing unit 140 can include proximity transducer 141 by combine below touch screen come right
This is described.
Interface unit 170 is used as at least one external device (ED) and is connected, with mobile terminal 1, the interface that can pass through.
Such as, external device (ED) can include wired or wireless head-band earphone port, external power source (or battery charging
Device) port, wired or wireless FPDP, memory card port, there is the device of identification module for connecting
Port, audio frequency input/output (I/O) port, video i/o port, ear port etc..Identification module
Can be that storage is for verifying that user uses the various information of mobile terminal 1 and can include that user identifies mould
Block (UIM), client identification module (SIM), Universal Subscriber identification module (USIM) etc..It addition,
The device (hereinafter referred to as " identification device ") with identification module can be to take the form of smart card, therefore,
Identify that device can be connected with mobile terminal 1 via port or other attachment means.Interface unit 170 is permissible
For receiving from the input (such as, data message, electric power etc.) of external device (ED) and will receive
Input the one or more elements being transferred in mobile terminal 1 or may be used at mobile terminal and outside dress
Data are transmitted between putting.
It addition, when mobile terminal 1 is connected with external base, interface unit 170 can serve as allowing to pass through
Its by electric power from base provide that the path of mobile terminal 1 or can serve as allows from base input various
Command signal is transferred to the path of mobile terminal by it.Can from various command signals or the electric power of base input
For use as identifying the signal whether mobile terminal is accurately fitted within base.Output unit 150 is by structure
Make for vision, audio frequency and/or tactile manner provide output signal (such as, audio signal, video signal,
Alarm signal, vibration signal etc.).Output unit 150 can include display unit 151 etc..
Display unit 151 may be displayed on the information processed in mobile terminal 1.Such as, when mobile terminal 1
When being in telephone calling model, display unit 151 can show and call or other (such as, text that communicates
Information receiving and transmitting, multimedia file download etc.) relevant user interface (UI) or graphic user interface (GUI).
When mobile terminal 1 is in video calling pattern or image capture mode, display unit 151 can show
The image of capture and/or the image of reception, UI or GUI illustrating video or image and correlation function etc..
Meanwhile, when display unit 151 and touch pad the most superposed on one another to form touch screen time, aobvious
Show that unit 151 can serve as input equipment and output device.Display unit 151 can include liquid crystal display
(LCD), thin film transistor (TFT) LCD (TFT-LCD), Organic Light Emitting Diode (OLED) display,
At least one in flexible display, three-dimensional (3D) display etc..Some in these display are permissible
Being configured to transparence, to allow user to watch from outside, this is properly termed as transparent display, the most thoroughly
Bright display can for example, TOLED (transparent organic light emitting diode) display etc..Think according to specific
The embodiment wanted, mobile terminal 1 can include two or more display units (or other display device),
Such as, mobile terminal can 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.
Memorizer 160 can store the process performed by controller 180 and the software program controlling operation etc.,
Or can temporarily store data (such as, telephone directory, message, the static state that oneself maybe will export through output
Image, video etc.).And, memorizer 160 can store and export about when touch is applied to touch screen
The vibration of various modes and the data of audio signal.
Memorizer 160 can include the storage medium of at least one type, described storage medium include flash memory,
Hard disk, multimedia card, card-type memorizer (such as, SD or DX memorizer etc.), random access store
Device (RAM), static random-access memory (SRAM), read only memory (ROM), electric erasable
Programmable read only memory (EEPROM), programmable read only memory (PROM), magnetic storage,
Disk, CD etc..And, mobile terminal 1 can be connected depositing of execution memorizer 160 with by network
The network storage device cooperation of storage function.
Controller 180 generally controls the overall operation of mobile terminal.Such as, controller 180 performs and voice
Control that call, data communication, video calling etc. are relevant and process.It addition, controller 180 can wrap
Including the multi-media module 181 for reproducing (or playback) multi-medium data, multi-media module 181 can be with structure
Make in controller 180, or it is so structured that separate with controller 180.Controller 180 can perform
Pattern recognition process, to be identified as character by the handwriting input performed on the touchscreen or picture drafting input
Or image.
Power subsystem 190 receives external power or internal power under the control of controller 180 and provides behaviour
Make the suitable electric power needed for each element and assembly.
Various embodiment described herein can be to use such as computer software, hardware or its any combination
Computer-readable medium implement.Implementing for hardware, embodiment described herein can be by using
Application-specific IC (ASIC), digital signal processor (DSP), digital signal processing device (DSPD),
Programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, micro-control
Device processed, microprocessor, it is designed to perform at least one in the electronic unit of function described herein and comes real
Executing, in some cases, such embodiment can be implemented in controller 180.Software is implemented,
The embodiment of such as process or function can perform at least one function or the single software of operation with permission
Module is implemented.Software code can by write with any suitable programming language software application (or
Program) to implement, software code can be stored in memorizer 160 and be performed by controller 180.
So far, oneself is through describing mobile terminal according to its function.Below, for the sake of brevity, will describe all
In various types of mobile terminals of folded form, board-type, oscillating-type, slide type mobile terminal etc.
Slide type mobile terminal is as example.Therefore, the present invention can be applied to any kind of mobile terminal, and
And it is not limited to slide type mobile terminal.
As shown in Figure 1 mobile terminal 1 may be constructed such that utilize via frame or packet transmission data all
As wired and wireless communication system and satellite-based communication system operate.
The communication system being wherein operable to according to the mobile terminal of the present invention is described referring now to Fig. 2.
Such communication system can use different air interfaces and/or physical layer.Such as, by communication system
The air interface used includes such as frequency division multiple access (FDMA), time division multiple acess (TDMA), CDMA
(CDMA) and UMTS (UMTS) (especially, Long Term Evolution (LTE)), the whole world
Mobile communication system (GSM) etc..As non-limiting example, explained below relates to CDMA and leads to
Communication system, but such teaching is equally applicable to other type of system.
With reference to Fig. 2, cdma wireless communication system can include multiple mobile terminal 1, multiple base station (BS)
270, base station controller (BSC) 275 and mobile switching centre (MSC) 280.MSC 280 is constructed
For forming interface with Public Switched Telephony Network (PSTN) 290.MSC 280 be also structured to can be through
The BSC 275 being couple to BS 270 by back haul link forms interface.If back haul link can be known according to Ganji
Interface in any one construct, described interface includes such as E1/T1, ATM, IP, PPP, frame relay,
HDSL, ADSL or xDSL.It will be appreciated that system as shown in Figure 2 can include multiple BSC
2750。
Each BS 270 can service one or more subregion (or region), by multidirectional antenna or point to specific
Each subregion that the antenna in direction covers is radially away from BS 270.Or, each subregion can be by being used for
Two or more antennas of diversity reception cover.Each BS 270 may be constructed such that support multiple frequencies distribution,
And the distribution of each frequency has specific frequency spectrum (such as, 1.25MHz, 5MHz etc.).
Intersecting that subregion and frequency are distributed can be referred to as CDMA Channel.BS 270 can also be referred to as base
Station transceiver subsystem (BTS) or other equivalent terms.In this case, term " base station "
May be used for broadly representing single BSC 275 and at least one BS 270.Base station can also be referred to as " honeybee
Nest station ".Or, each subregion of specific BS 270 can be referred to as multiple cellular station.
As shown in Figure 2, broadcast singal is sent in system operation by broadcsting transmitter (BT) 295
Mobile terminal 1.In fig. 2 it is shown that several global positioning systems (GPS) satellite 300, satellite 300
Help to position at least one in multiple mobile terminals 1.
In fig. 2, depict multiple satellite 300, it is understood that be, it is possible to use any number of defend
Star obtains useful location information.GPS module as the positional information module 115 shown in Fig. 1 is usual
It is configured to coordinate the location information wanted with acquisition with satellite 300.Substitute GPS tracking technique or
Outside GPS tracking technique, it is possible to use other technology of the position of mobile terminal can be followed the tracks of.It addition, extremely
A few gps satellite 300 can optionally or additionally process satellite dmb transmission.
As a typical operation of wireless communication system, it is anti-that BS 270 receives from various mobile terminals 1
To link signal.Mobile terminal 1 generally participates in call, information receiving and transmitting communicates with other type of.Specific BS
The 270 each reverse link signal received are processed in specific BS 270.The data obtained are forwarded
Give relevant BSC 275.BSC provides call resource distribution and the soft switching process that includes between BS 270
The mobile management function coordinated.The data received also are routed to MSC 280 by BSC 275, and it provides use
In the extra route service forming interface with PSTN 290.Similarly, PSTN 290 and MSC 280
Forming interface, MSC Yu BSC 275 forms interface, and BSC 275 correspondingly controls BS 270 to incite somebody to action
Forward link signals is sent to mobile terminal 1.
Based on above-mentioned mobile terminal hardware configuration and communication system, each embodiment of the inventive method is proposed.
Embodiment one
A kind of image processing method that the embodiment of the present invention provides, as it is shown on figure 3, the method may include that
S101, obtain the original RAW data of pending image.
It should be noted that during using terminal to carry out image taking, terminal is to pending image
The acquisition of original RAW data is to be realized by the imageing sensor arranged in the terminal.
Wherein, imageing sensor may include that charge coupled cell (CCD, Charge-coupled Device)
Imageing sensor, complementary metal oxide semiconductors (CMOS) (CMOS, Complementary Metal Oxide
Semiconductor) Color Filter Array (CFA color filter lens array) element of imageing sensor.
Concrete, that above-mentioned imageing sensor is made up of the photo-sensitive cell of a both direction dense arrangement anyhow two dimension
Matrix, constitute a kind of Bayer pattern rgb pixel point arrangement, common are (a), (b) shown in Fig. 4,
The arrangement mode of 4 kinds of Bayer pattern of (c), (d), the most corresponding pixel of each CCD.Wherein, R
Sensing HONGGUANG, G sensing green glow, B sense blue light, and in Bayer pattern G be R and B twice (because of
Eyes for the mankind are more sensitive to green).
It should be noted that each CCD or CMOS in above-mentioned two-dimensional matrix is used only to experience light
The energy of son, produces the electric charge of corresponding ratio owing to entering the intensity of light in each CCD or CMOS,
These charge information are collected and pass through amplification and store by each CCD or CMOS, such as, such as figure
CMOS sensing photon shown in CMOS photon sensing schematic diagram shown in 5 finally stores the electric charge of corresponding ratio
(square shown in Fig. 5), and RAW record is exactly the charge value of each location of pixels, it is not have
Record any colouring information, say, that: the original RAW data of pending image are gray scale literary composition
Part.
Exemplary, original RAW data with pictorial form in being then that a gray level image pattern does not has now
Color, it can be seen that original RAW number in the image that original RAW data as shown in Figure 6 are formed
It is black and white according to the image formed, and also mosaic phenomenon occurs.
It should be noted that the terminal in the embodiment of the present invention can be understood as end to the operation of pending image
The process to pending image of the image procossing application in end.
S102, according to preset strategy, calculate the crucial acquisition parameters in original RAW data.
After terminal obtains the original RAW data of pending image, owing to original RAW data being preserved
The scene information of pending image, this terminal, according to these scene informations and preset strategy, calculates original RAW
The crucial acquisition parameters of data.
Concrete, terminal according to preset strategy, calculate the white balance of original RAW data gain parameter,
At least one in colour switching matrix parameter.
Wherein, white balance is a concept of the utmost importance of image procossing.(English name is so-called white balance
White Balance), it is simply that the reduction to white object.When user with the naked eye watches this boundless universe,
Under different light, to identical color feel be substantially identical, the most in the morning during rising sun initial rise,
See a white object, feel that it is white；And user is under night dim light, it is seen that white
Object, feels that it remains white.This is owing to the mankind are from the developmental process that birth is later, the brain of people
The colour reproduction to the object under different light has had adaptability.But, as camera terminal or have
The terminal of shoot function, such as digital camera, can be without the adaptability of human eye.Under different light, digital
The disequilibrium that phase chance exports due to CCD, causes digital camera colour reproduction distortion.Generally,
Think that sunlight is white, it is known that the colour temperature of direct sunlight is about 5200K user habit, incandescent
The colour temperature of lamp is about 3000K.When shooting with the day mating plate of traditional camera, incandescent light is the lowest due to colour temperature,
So Huang is the reddest partially.During so the colour temperature of the most on-the-spot light is less than the colour temperature that camera sets, Huang is partially the most partially
Red, when the colour temperature of on-the-spot light sets higher than camera, will be partially blue.
In order to solve under different-colour, the white drift phenomenon caused.Response colour temperature changed due to white
Maximum, usual white is used as the primary colours adjusted.Common white balance adjusting may include that the whitest flat
Weighing apparatus, tungsten light white balance, fluorescence white balance, indoor white balance, manually regulate.
It should be noted that preset strategy can be to calculate gain parameter or the colour switching matrix of white balance
Existing algorithm, the concrete implementation form embodiment of the present invention is not restricted.
Further, the crucial acquisition parameters in original RAW data can also include: pending image
Width, highly, pixel figure place, black level and direction of rotation etc..But, white balance parameter and colour switching
Matrix parameter important (gain parameter of white balance be used for adjust white balance parameter) because above-mentioned this two
Individual parameter can affect the normal color of original RAW data and resolve.For the calculating of above-mentioned parameter, the present invention
Embodiment is fixing for each fixing sensor colour switching matrix and black level, white balance
Parameter calculates automatically according to scene.
It should be noted that after terminal completes AWB adjustment or the colour switching adjustment etc. of image,
White balance parameter required for RAW data is Rgain, Ggain, Bgain or colour switching matrix parameter
Can be written in original RAW data Deng crucial acquisition parameters, form RAW file.
S103, key acquisition parameters and original RAW data are write RAW file according to pre-arranged code specification
In.
It should be noted that owing to the different image procossing in terminal applies the file to RAW form
Analysis mode or the difference of coded system, by the RAW file of an image procossing application coding the most not
Can be by another image procossing analytic application, therefore, the terminal of the embodiment of the present invention is by needed for RAW file
Crucial acquisition parameters and original RAW data according to can the coded format of analytic uniform be packaged, i.e. should
Key acquisition parameters and original RAW data are write in RAW file by terminal according to pre-arranged code specification.
Concrete, terminal by key acquisition parameters and original RAW data according to digital news gathering (DNG,
Digital Negative) coding criterion write RAW file in.
It should be noted that DNG is mainly extended on the basis of tiff format, encode fundamental mesh
Formula is substantially all and is defined in TIFF or TIFF/EP.Wherein, three keys in tiff file form
Word is: image file head Image File Header (IFH)；Image file directory Image File Directory
And directory entry Directory Entry (DE) (IFD).It is illustrated in figure 7 the data structure schematic diagram of TIFF.
Illustrate based on the data structure of TIFF below.
It should be noted that every piece image is to start with the IFH of 8 bytes, this IFH has pointed to the
One IFD, IFD contain the various information of image, also contains one simultaneously and point to actual image data
Pointer.
Wherein, the composition of (1), IFH
Byte 0-1: byte order flag bit, is worth for II or MM.II represents that little byte, front, is also called
little-endian.MM represents that big byte, front, becomes again big-endian.
The flag bit of Byte 2-3:TIFF, typically all 42, represent that this image is tiff form.
The side-play amount of 4-7: the first IFD of Byte.Can at an arbitrary position, but must be on the limit of a word
Boundary, say, that must be the integral multiple of 2.
(2), the composition original position of this IFD (0 represent) of IFD
IFD is most important data structure in TIF figure, and it contains most important letter in a TIF file
Breath, a TIF figure may have multiple IFD, has multiple image in this supporting paper, and each IFD identifies 1
The base attribute of image.Containing three class members in IFD structure, Directory Entry Count points out this knot
How many directory entries are had inside structure；Next being exactly N number of linearly aligned DE sequence, quantity is indefinite；
Being exactly finally a side-play amount, the next file directory of mark is relative to the position of file beginning, certainly,
If this TIF file contains only piece image, then with regard to only one of which IFD, it is clear that this side-play amount
It is equal to 0；
Byte 0-1: represent that this IFD contains how many DE, it is assumed that number is n.
Byte 2-(n*12+1): n DE.
Byte (n*12+2)-(n*12+5): the side-play amount of next IFD, without being then set to 0.
(3), the composition of DE
One DE is exactly some attribute of piece image.The size of such as image, resolution, whether press
Contracting, the ranks number of pixel, by several expressions, (1 represents black-and-white two color to a pixel, and 8 represent 256
Color etc.) etc..Above-mentioned white balance parameter is with regard to a value in this attribute, wherein: tag member is this attribute
Numbering, in image file directory, it arranges according to ascending order.We can number by reading these,
Then in TIF form official white paper, corresponding implication is searched.Attribute data represent, then
Type is exactly the type that represent these data.Each DE totally 12 bytes:
Unique mark of Byte 0-1: this TAG.
Byte 2-3:type data type.
Byte 4-7:lenghts quantity.Be may determine that the data needs storing this TAG by type and quantity
The byte number occupied.
Byte 8-11:valueOffset is the inclined of the variate-value relative file beginning of the attribute representative of tag mark
Shifting amount.If the byte number taken is less than 4, then this value just leaves in valueOffset, must not
Still further to point to a place.If it exceeds 4, the finger being directed to real data deposited the most here
Pin.
Therefore, exemplary, according to the mode of above-mentioned tiff file form, terminal is by original RAW data
RAW file is write according to default DNG coding criterion, it is assumed that RAW data are 1 with crucial acquisition parameters
The view data of individual pending image, crucial acquisition parameters is 8, then the RAW file that terminal is finished writing
Data stream is as shown in Figure 8.Wherein, due to the view data that RAW data are 1 pending image, because of
This, only one of which IFD in Fig. 8, and crucial acquisition parameters is 8, therefore, has 8 DE in Fig. 8.
It should be noted that it can be N number of that the number of DE is arranged, i.e. DE0, DE1, DE2 ... DEN,
The embodiment of the present invention can arrange the number of DE according to actual needs.It addition, 8 DE in Fig. 8, i.e.
DE0, DE1, DE2 ... DE7 is merely illustrative of, the number of DE is arranged not do by the embodiment of the present invention to be had
Body limits.
S104, utilize third-party application to open RAW file, generate the image file of RAW.
S105, image file to RAW carry out the process of image later stage.
Key acquisition parameters and original RAW data are write in RAW file by terminal according to pre-arranged code specification
Afterwards, when user wants to use the third-party application in this terminal to process pending image, this terminal is the most permissible
Utilize third-party application to open RAW file, generate the image file of RAW, thus to this RAW image
File continues with.
Concrete, terminal utilizes third-party application to solve the crucial acquisition parameters in described RAW file
Analysis；In third-party application, adjust original RAW data according to the crucial acquisition parameters after resolving, generate
The image file of RAW.
It should be noted that the third-party application in the embodiment of the present invention is at the third-party image in terminal
Ought to use.
It should be noted that due to RAW file includes original RAW data (the most pending image
View data) and crucial acquisition parameters (including the parameter characterizing color), therefore, terminal utilizes third party to beat
Opening RAW file, the image file generating RAW is more in bright gay color than original RAW image, high-quality
Image.
It is understood that in different application in a terminal, the figure of an image procossing application shooting
The original RAW data of picture can apply use to be differently encoded another image procossing of mode, it is achieved that
RAW data in same terminal without image procossing apply in share, improve the effect of image procossing
Rate and the suitability.
Concrete, terminal carries out the process of image later stage and can be the image file of RAW: terminal or terminal
In third party the image file of RAW is carried out at least one in the color of image, contrast and brightness
Process.
Exemplary, after terminal is applied RAW File Open by third-party application PS (Photoshop)
Pending image effect as shown in Figure 9.
A kind of image processing method that the embodiment of the present invention is provided, by obtaining the original of pending image
RAW data；According to preset strategy, calculate the crucial acquisition parameters in original RAW data；Key is clapped
Take the photograph parameter and original RAW data according in pre-arranged code specification write RAW file；Utilize third-party application
Open RAW file, generate the image file of RAW；The image file of RAW was carried out at the image later stage
Reason.Use above-mentioned technic relization scheme, make third party owing to original RAW data are carried out Unified coding
Application can resolve RAW file, such that it is able to RAW file carries out imaging process obtain RAW image
File, owing to directly generating and using RAW image file to carry out the later stage as image in third-party application
The object processed, and the deterioration of RAW file data is less, therefore, enters image at this third-party application
Can reduce without having to worry about image quality and regulate color and the brightness of image more freely when the row later stage processes, reach
To best image processing effect, thus the picture improving image procossing presents effect.
Embodiment two
As shown in Figure 10, embodiments providing a kind of terminal 1, this terminal 1 may include that
Acquiring unit 10, for obtaining the original RAW data of pending image.
Computing unit 11, for according to preset strategy, calculating the described original of described acquiring unit 10 acquisition
Crucial acquisition parameters in RAW data.
Writing unit 12, for the described crucial acquisition parameters calculated by described computing unit 11 with described obtain
Take the described original RAW data of unit 10 acquisition according in pre-arranged code specification write RAW file.
Signal generating unit 13, for utilizing third-party application to open the described RAW that said write unit 12 is finished writing
File, generates the image file of RAW.
Processing unit 14, for carrying out figure to the image file of the described RAW that described signal generating unit 13 generates
As the later stage processes.
Optionally, described computing unit 11, specifically for according to preset strategy, calculate described acquiring unit 10
In the gain parameter of white balance of described original RAW data of acquisition, colour switching matrix parameter at least
One.
Optionally, as shown in figure 11, described terminal 1 also includes: resolution unit 15.
Described resolution unit 15, for utilizing described third-party application to calculate described computing unit 11
Crucial acquisition parameters in described RAW file resolves.
Described signal generating unit 13, specifically in described third-party application, according to described resolution unit 15
The described crucial acquisition parameters parsed from said write unit 12 adjusts the institute that said write unit 12 writes
State original RAW data, generate the image file of described RAW.
Optionally, said write unit 12, specifically for the described key calculated by described computing unit 11
The described original RAW data that acquisition parameters and described acquiring unit 10 obtain are write according to DNG coding criterion
Enter in RAW file.
Optionally, described processing unit 14, specifically for the described RAW generating described signal generating unit 13
Image file carry out in the color of image, contrast and brightness at least one process.
Optionally, the terminal in the embodiment of the present invention can be the hands with shoot function and image processing function
The electronic equipments such as machine, flat board and camera, the embodiment of the present invention is not restricted.
As shown in figure 12, in actual applications, above-mentioned acquiring unit 10, computing unit 11, writing unit
12, signal generating unit 13, processing unit 14 and resolution unit 15 can be by the processors 16 being positioned in terminal 1
Realize, specially central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP)
Or field programmable gate array (FPGA) etc. realizes, this terminal 1 can also include storage medium 17, should
Storage medium 17 can be connected with processor 16 by system bus 18, and wherein, storage medium 17 is used for
Storage executable program code, this program code includes that computer-managed instruction, storage medium 17 may comprise
High-speed RAM memorizer, it is also possible to also include nonvolatile memory, such as, at least one disk storage
Device.
A kind of terminal that the embodiment of the present invention is provided, this terminal is by obtaining the original RAW of pending image
Data；According to preset strategy, calculate the crucial acquisition parameters in original RAW data；By key shooting ginseng
Number and original RAW data are according in pre-arranged code specification write RAW file；Third-party application is utilized to open
RAW file, generates the image file of RAW；The image file of RAW is carried out the process of image later stage.
Use above-mentioned technic relization scheme, make third-party application owing to original RAW data are carried out Unified coding
RAW file can be resolved, such that it is able to RAW file is carried out imaging process obtain RAW image file,
Owing to directly generating and using RAW image file to carry out the later stage as image in the third-party application of terminal
The object processed, and the deterioration of RAW file data is less, therefore, enters image at this third-party application
Can reduce without having to worry about image quality and regulate color and the brightness of image more freely when the row later stage processes, reach
To best image processing effect, thus the picture improving image procossing presents effect.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use hardware embodiment, software implementation or combine software and
The form of the embodiment of hardware aspect.And, the present invention can use and wherein include calculating one or more
The computer-usable storage medium of machine usable program code (includes but not limited to disk memory and optical storage
Device etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program according to embodiments of the present invention
Flow chart and/or block diagram describe.It should be understood that can be by computer program instructions flowchart and/or side
Flow process in each flow process in block diagram and/or square frame and flow chart and/or block diagram and/or the knot of square frame
Close.Can provide these computer program instructions to general purpose computer, special-purpose computer, Embedded Processor or
The processor of other programmable data processing device is to produce a machine so that by computer or other can
The instruction that the processor of programming data processing equipment performs produces for realizing in one flow process or multiple of flow chart
The device of the function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing device
In the computer-readable memory worked in a specific way so that be stored in this computer-readable memory
Instruction produces the manufacture including command device, and this command device realizes at one flow process of flow chart or multiple stream
The function specified in journey and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented process on computer or other programmable devices,
Thus the instruction performed on computer or other programmable devices provides for realizing in one flow process of flow chart
Or the step of the function specified in multiple flow process and/or one square frame of block diagram or multiple square frame.
The above, only presently preferred embodiments of the present invention, it is not intended to limit the protection model of the present invention
Enclose.
Claims (10)
1. an image processing method, it is characterised in that including:
Obtain the original RAW data of pending image；
According to preset strategy, calculate the crucial acquisition parameters in described original RAW data；
By civilian according to pre-arranged code specification write RAW to described crucial acquisition parameters and described original RAW data
In part；
Utilize third-party application to open described RAW file, generate the image file of RAW；
The image file of described RAW is carried out the process of image later stage.
Method the most according to claim 1, it is characterised in that described according to preset strategy, calculates institute
State the crucial acquisition parameters in original RAW data, including:
According to preset strategy, calculate the gain parameter of white balance of described original RAW data, colour switching
At least one in matrix parameter.
Method the most according to claim 1, it is characterised in that described utilize third-party application to open institute
State RAW file, generate the image file of RAW, including:
Utilize described third-party application that the crucial acquisition parameters in described RAW file is resolved；
In described third-party application, adjust described original RAW according to the described crucial acquisition parameters after resolving
Data, generate the image file of described RAW.
Method the most according to claim 1, it is characterised in that described by described crucial acquisition parameters and
Described original RAW data write in RAW file according to pre-arranged code specification, including:
Described crucial acquisition parameters and described original RAW data are write RAW according to DNG coding criterion
In file.
Method the most according to claim 1, it is characterised in that the described image literary composition to described RAW
Part carries out the process of image later stage, including:
The image file of described RAW is carried out at least one in the color of image, contrast and brightness
Reason.
6. a terminal, it is characterised in that including:
Acquiring unit, for obtaining the original RAW data of pending image；
Computing unit, for according to preset strategy, calculating the described original RAW that described acquiring unit obtains
Crucial acquisition parameters in data；
Writing unit, for the described crucial acquisition parameters calculated by described computing unit and described acquiring unit
The described original RAW data obtained are according in pre-arranged code specification write RAW file；
Signal generating unit, for utilizing third-party application to open the described RAW file that said write unit is finished writing,
Generate the image file of RAW；
Processing unit, after the image file of the described RAW for generating described signal generating unit carries out image
Phase processes.
Terminal the most according to claim 6, it is characterised in that
Described computing unit, specifically for according to preset strategy, calculating the described former of described acquiring unit acquisition
At least one in the gain parameter of white balance of beginning RAW data, colour switching matrix parameter.
Terminal the most according to claim 6, it is characterised in that described terminal also includes: resolution unit；
Described resolution unit, for utilizing described in described computing unit calculates by described third-party application
Crucial acquisition parameters in RAW file resolves；
Described signal generating unit, specifically in described third-party application, according to described resolution unit from described
The described crucial acquisition parameters that writing unit parses adjusts the described original RAW of said write unit write
Data, generate the image file of described RAW.
Terminal the most according to claim 6, it is characterised in that
Said write unit, specifically for the described crucial acquisition parameters calculated by described computing unit and described
The described original RAW data that acquiring unit obtains are according in DNG coding criterion write RAW file.
Terminal the most according to claim 6, it is characterised in that
Described processing unit, the image file of the described RAW specifically for generating described signal generating unit enters
At least one in the color of row image, contrast and brightness processes.
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| CN201610367533.2A CN105979235A (en) | 2016-05-30 | 2016-05-30 | Image processing method and terminal |
| PCT/CN2017/082935 WO2017206655A1 (en) | 2016-05-30 | 2017-05-03 | Image processing method, terminal, and computer storage medium |
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| CN201610367533.2A CN105979235A (en) | 2016-05-30 | 2016-05-30 | Image processing method and terminal |
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