CN104363375A - Method, device and terminal for photograph noise reduction - Google Patents
Method, device and terminal for photograph noise reduction Download PDFInfo
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- CN104363375A CN104363375A CN201410712735.7A CN201410712735A CN104363375A CN 104363375 A CN104363375 A CN 104363375A CN 201410712735 A CN201410712735 A CN 201410712735A CN 104363375 A CN104363375 A CN 104363375A
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Abstract
The invention is suitable for the technical field of terminals, and provides a method, a device and a terminal for photograph noise reduction. The method comprises the following steps: starting a first camera and a second camera which are adjacently arranged and positioned on the same shooting plane; triggering the first camera to shoot a photochrome of a current scene and synchronously triggering the second camera to shoot a black-and-white photograph of the current scene when a shutter command is detected; and synthesizing the photochrome and the black-and-white photograph and then outputting. According to the method, the photograph noise reduction can be realized by only synthesizing the photochrome and the black-and-white photograph which are synchronously shot by the two cameras at the same scene, so that the method can be applied to a shooting scene with dark light or at night so as to improve the imaging effect of a photograph to a certain extent under the shooting condition of underexposing or overlarge photosensibility.
Description
Technical field
The invention belongs to terminal technology, particularly relate to a kind of method of photo noise reduction, device and terminal.
Background technology
Digital camera records picture by pixel, usually, in time exposure, compared with in the image part of dark areas or other under-exposure, the noise that some are tiny can be covered with, and the ISO photosensitivity equivalence value selected during shooting is higher, the photosignal that photosensitive position collects just is put larger, and the noise produced is more, brings greater impact image quality.
At present, camera function has become one of essential basic function of the consumer electronics products such as mobile phone, but, be limited to the requirement of hardware and software cost, this series products cannot carry out specialty, high-precision noise reduction process by comparison film as the digital camera of specialty, cause the photo noise shot under night condition too much, have impact on imaging image quality.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of method of photo noise reduction, device and terminal, and being intended to solve mobile phone in prior art cannot carry out noise reduction process by comparison film, the problem of imaging effect difference.
First aspect, provides a kind of method of photo noise reduction, comprising: start the first camera and second camera, and described first camera is adjacent with described second camera and be positioned at same camera plane; When shutter instruction being detected, trigger the photochrome of described first camera shooting current scene, and the described second camera of synchronous triggering takes the black-and-white photograph of described current scene; Export after described photochrome and the synthesis of described black-and-white photograph.
In the first possible implementation of first aspect, described method also comprises: export in the display screen of terminal, the colour picture of described first camera imaging as preview screen in real time to.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second is possible, describedly to comprise exporting after described photochrome and the synthesis of described black-and-white photograph: judge whether default noise reduction instruction to be detected; When default noise reduction instruction being detected, export after described photochrome and the synthesis of described black-and-white photograph; When default noise reduction instruction not detected, directly described photochrome is exported.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the third is possible, before described startup first camera and second camera, described method also comprises: judge whether the decrease of noise functions of camera programm is opened; If the decrease of noise functions of camera programm is opened, perform the step of described startup first camera and second camera.
In conjunction with the first possible implementation of first aspect or first aspect, in the 4th kind of possible implementation, describedly to comprise exporting after described photochrome and the synthesis of described black-and-white photograph: judge whether exposure parameter in described photochrome or black-and-white photograph meets the threshold condition preset; When the exposure parameter in described photochrome or black-and-white photograph meets default threshold condition, export after described photochrome and the synthesis of described black-and-white photograph; When the exposure parameter in described photochrome or black-and-white photograph does not meet the threshold condition preset, directly described photochrome is exported.
Second aspect, provides a kind of device of photo noise reduction, comprising: start unit, and for starting the first camera and second camera, described first camera is adjacent with described second camera and be positioned at same camera plane; Photographing unit, for when shutter instruction being detected, trigger the photochrome of described first camera shooting current scene, and the described second camera of synchronous triggering takes the black-and-white photograph of described current scene; Synthesis unit, for exporting after described photochrome and the synthesis of described black-and-white photograph.
In the first possible implementation of second aspect, described device also comprises: preview unit, for exporting in the display screen of terminal, the colour picture of described first camera imaging as preview screen in real time to.
In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the second is possible, described synthesis unit comprises: the first judgment sub-unit, default noise reduction instruction detected for judging whether; First exports subelement, for when default noise reduction instruction being detected, exports after described photochrome and the synthesis of described black-and-white photograph; Second exports subelement, for when default noise reduction instruction not detected, is directly exported by described photochrome.
In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the third is possible, described device also comprises: judging unit, for judging whether the decrease of noise functions of camera programm is opened; If described judging unit judges that the decrease of noise functions of camera programm is opened, then described start unit performs the step of described startup first camera and second camera.
In conjunction with the first possible implementation of second aspect or second aspect, in the 4th kind of possible implementation, described synthesis unit comprises: the second judgment sub-unit, for judging whether the exposure parameter in described photochrome or black-and-white photograph meets the threshold condition preset; 3rd exports subelement, for meeting default threshold condition when the exposure parameter in described photochrome or black-and-white photograph, exports after described photochrome and the synthesis of described black-and-white photograph; 4th exports subelement, for not meeting when the exposure parameter in described photochrome or black-and-white photograph the threshold condition preset, is directly exported by described photochrome.
The third aspect, provides a kind of terminal, and described terminal comprises the device of photo noise reduction as above.
In the first possible implementation of the third aspect, described terminal comprises smart mobile phone or flat board.
In the embodiment of the present invention, the photochrome under the Same Scene of two camera sync photographies and black-and-white photograph is only needed to synthesize, namely the noise reduction of photo can be realized, the method can be applied under the photographed scene of dark or bat at night, under under-exposed or that photosensitivity is excessive shooting condition, improve the imaging effect of photo to a certain extent.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the method for the photo noise reduction that the embodiment of the present invention provides;
Fig. 2 is the position exemplary plot of the first camera of providing of the embodiment of the present invention and second camera;
Fig. 3 is the realization flow figure of the method for the photo noise reduction that another embodiment of the present invention provides;
Fig. 4 is the specific implementation flow chart of the method S103 of the photo noise reduction that the embodiment of the present invention provides;
Fig. 5 is the realization flow figure of the method for the photo noise reduction that another embodiment of the present invention provides;
Fig. 6 is the specific implementation flow chart of the method S103 of the photo noise reduction that another embodiment of the present invention provides;
Fig. 7 is the structured flowchart of the device of the photo noise reduction that the embodiment of the present invention provides;
Fig. 8 is the block diagram of the part-structure of the mobile phone relevant to the terminal that the embodiment of the present invention provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The method of the photo noise reduction that the embodiment of the present invention provides and device can be applied to and be integrated with in the terminal equipment of camera, comprise smart mobile phone, dull and stereotyped, palmtop PC (Personal Digital Assistant, PDA), camera, etc., further, described terminal equipment can also comprise display screen, wherein, camera in terminal is used for realization and takes pictures, camera function, and display screen is for realizing the preview function to shooting picture, namely, by showing in real time the picture of the current income of camera, for user's preview, thus reach the effect of view finder.
Fig. 1 shows the realization flow of the method for the photo noise reduction that the embodiment of the present invention provides, and details are as follows:
In S101, start the first camera and second camera, described first camera is adjacent with described second camera and be positioned at same camera plane.
In the present embodiment, terminal is configured with simultaneously two cameras, wherein, first camera and second camera are adjacent, the camera be positioned in same camera plane, the position relationship demand fulfillment of the two: two cameras are substantially identical to the distance of object, and two cameras are substantially identical relative to the shooting angle of object, described substantially identical, namely the difference of described distance or described shooting angle is little of negligible, based on above-mentioned position relationship, it is basically identical that two cameras take for same subject the photo come.Fig. 2, as a kind of realization example, shows the first camera 21 and second camera 22 and is configured in a kind of specific implementation on mobile phone 23.
In the present embodiment, the process of the operating system of terminal is monitored, when listening to " camera " application program in operating system and being invoked into front stage operation, start the first camera and the second camera of terminal simultaneously.
In S102, when shutter instruction being detected, trigger the photochrome of described first camera shooting current scene, and the described second camera of synchronous triggering takes the black-and-white photograph of described current scene.
In the present embodiment, the mode that sends of described shutter instruction includes but not limited to following several: send shutter instruction by pressing terminals physical button, correspondingly, need whether UNICOM determines assigning of shutter instruction by detecting the circuit be connected with this physical button; Or send shutter instruction by the virtual key pressed on terminal touch screen, correspondingly, whether assigning of shutter instruction is determined in conducting to need the circuit by detecting this virtual key place screen area; Or, send shutter instruction by voice mode, correspondingly, need to receive speech data by the microphone apparatus of terminal, and analyze this speech data, determine assigning of shutter instruction.
When shutter instruction is assigned, trigger two cameras and carry out shooting work simultaneously, for same photographed scene, synchronously, the first camera is taken and is exported photochrome, and second camera is taken and export black-and-white photograph.
In S103, export after described photochrome and the synthesis of described black-and-white photograph.
Usually, for camera, due to its charge coupled cell (Charge-coupled Device, CCD) transducer or complementary metal oxide semiconductors (CMOS) (Complementary Metal OxideSemiconductor, the CMOS) defect of photosensitive part in manufacture craft, inevitably, the noise that position is fixing can be produced in imaging process, time for exposure is longer, and the noise in photo is brighter, and this type of noise can be referred to as fixing noise.And due to reasons such as the noise of electronic device itself, the noise of amplifying circuit and interference, also noise can be produced in imaging process, this type of noise brightness generally can not be very large, it produces at random, often show as the variegated spot in large stretch of blue sky, or take a large amount of black of code in the shade of personage or scenery and variegated point, and this type of noise is particularly serious in the picture taken by ISO, can be referred to as random noise.
For issuable noise in above-mentioned photo imaging process, by synchronization being taken photochrome and the rear output of black-and-white photograph synthesis of Same Scene, the effect of noise reduction can be realized.Wherein, described synthesis, the same pixel of photochrome and black-and-white photograph can be superposed, or contrast the brightness value of the photochrome each pixel corresponding with black-and-white photograph respectively, and do to subtract each other process, eliminate the noise in photo with this, and ensure that the color of Original Photo sheet normal pixel, brightness, contrast are all unaffected.
In the present embodiment, photo after synthesis is exported, described output, photo after synthesis exports in the storage medium of terminal by concrete finger, and in subsequent operation process, user can recall this photo by the display screen of terminal and check, or from storage medium, copy out display or storage in this photo to other equipment.
By embodiment illustrated in fig. 1, after action of taking pictures completes, without the need to doing further post-processed by software approach to the photo taken again, only need, simply by after the photo synthesis of two camera shootings, namely can realize the noise reduction of photo.The method can be applied under the photographed scene of dark or bat at night, under under-exposed or that photosensitivity is excessive shooting condition, improves the imaging effect of photo to a certain extent.
As one embodiment of the present of invention, as shown in Figure 2, described method also comprises:
S104, exports in the display screen of terminal, as preview screen in real time by the colour picture of described first camera imaging.
Taking owing to there being two cameras in this programme simultaneously, and a camera takes color photographs, another camera shooting black-and-white photograph, therefore, in order to promote the image quality of terminal camera preview screen, in preview screen, the details of photographed scene is embodied more galore, in the present embodiment, the preview screen that terminal display screen is shown is the colour picture of the first camera shooting, and the black and white screen of second camera shooting is not used in display, only synthesizes for the later stage.Described preview screen, the i.e. picture of camera real time imagery, user can complete by this preview screen operations such as choosing the focus of taking pictures or making a video recording, find a view.In the present embodiment, the picture of the first camera shooting generates optical imagery by its camera lens, project again on transducer, then optical imagery is converted into the signal of telecommunication, the signal of telecommunication becomes digital signal through analog-to-digital conversion again, and digital signal through DSP processing process, then is sent in terminal handler and processes, finally export on the display screen of terminal, become the live preview picture that user can see.
The method of the photo noise reduction that above-described embodiment is set forth, can be applied under under-exposure or the excessive shooting condition of photosensitivity well, and for well-lighted shooting condition, this photo decrease of noise functions can be prohibited, to take pictures because of two cameras and later stage photo synthesizes the system resource brought and takies, minimizing overhead to reduce.Next by some embodiments, the triggering mode of comparison film decrease of noise functions is set forth:
As one embodiment of the present of invention, photo decrease of noise functions can after two cameras have been taken, and before photo synthesis exports, selectivity triggers, and as shown in Figure 4, in the present embodiment, S103 is specially:
In S401, judge whether default noise reduction instruction to be detected.
In S402, when default noise reduction instruction being detected, export after described photochrome and the synthesis of described black-and-white photograph.
In S403, when default noise reduction instruction not detected, directly described photochrome is exported.
In the present embodiment, once shutter instruction be detected, photochrome then under first sync pulse jamming Same Scene and black-and-white photograph, then wait for assigning of default noise reduction instruction, if default noise reduction instruction detected, then determine to perform photo decrease of noise functions, export after then taking the photochrome that obtains and black-and-white photograph synthesis, and if default noise reduction instruction do not detected, then give tacit consent to the decrease of noise functions not performing photo, so directly export photochrome, black-and-white photograph is eliminated from flash memory.
Wherein, the noise reduction instruction preset can by pressing the physical button of specifying in terminal or virtual key is assigned.The effect of the present embodiment is, no matter under which kind of situation, all complete shooting by two cameras at every turn simultaneously, once user have selected photo decrease of noise functions, just the photo taken can be utilized to complete synthesis noise reduction soon, and once user does not select photo decrease of noise functions, photochrome also directly can be exported soon, improve the response speed of system thus.
As another embodiment of the present invention, photo decrease of noise functions selectivity can trigger before two cameras start, and as shown in Figure 5, before S101 starts the first camera and second camera, described method also comprises:
S105, judges whether the decrease of noise functions of camera programm is opened; If the decrease of noise functions of camera programm is opened, then perform the step starting the first camera and second camera described in S101.
In the present embodiment, in advance decrease of noise functions can be set to acquiescence and open, or be set to acquiescence closedown.After camera programm starts, if detect, the decrease of noise functions acquiescence of camera programm is opened, then directly perform S101 and start the first camera and second camera simultaneously, if detect, the decrease of noise functions acquiescence of camera programm is closed, then only start one of them camera, for directly taking color photographs.
The present embodiment can be selected startup camera according to the shooting demand of reality or start two cameras simultaneously, reduces the meaningless resource occupation of system to greatest extent.
As another embodiment of the present invention, photo decrease of noise functions also automatically can be selected to open or close according to current acquisition parameters.As shown in Figure 6, S103 is specially:
In S601, judge whether the exposure parameter in described photochrome or black-and-white photograph meets the threshold condition preset.
In S602, when the exposure parameter in described photochrome or black-and-white photograph meets default threshold condition, export after described photochrome and the synthesis of described black-and-white photograph.
In S603, when the exposure parameter in described photochrome or black-and-white photograph does not meet the threshold condition preset, directly described photochrome is exported.
Such as, judge whether the photosensitivity in photochrome or black-and-white photograph is greater than predetermined threshold value.In shooting process at ordinary times, generally photosensitivity is placed on 100 or 200 gears of picture element the best, and under the shooting condition of insufficient light, in order to increase the exposure of photo, can photosensitivity be placed on 400,800 or higher gear, but along with the raising of photosensitivity, shooting image out has very large possibility to there will be obvious noise.Therefore, can by the photosensitivity of photo shot, automatically judge whether to need to perform photo decrease of noise functions, if the photosensitivity of imaging higher than a certain threshold value (such as, higher than 800), then automatically export after photochrome and black-and-white photograph synthesis, automatically to realize photo noise reduction; If the photosensitivity of imaging lower than this threshold value, then directly exports photochrome, black-and-white photograph is removed from flash memory.
Again such as, judge whether the time for exposure of photochrome or black-and-white photograph is greater than predetermined threshold value.Under well-lighted condition, only need the very short time for exposure just can obtain sufficient exposure, but, under the shooting condition of insufficient light, in order to reach certain exposure, the time for exposure of photo can be extended when taking.Therefore, by judging the time for exposure of photo, can the current shooting environmental of automatic decision whether be well-lighted, if the time for exposure is higher than a certain threshold value, then automatically exporting after photochrome and black-and-white photograph synthesis, automatically to realize photo noise reduction; If the time for exposure lower than this threshold value, then directly exports photochrome, black-and-white photograph is removed from flash memory.
The present embodiment do not need user manually comparison film decrease of noise functions trigger, automatically can be selected to open or close photo decrease of noise functions according to actual photographed condition by system, improve the intelligence degree of camera programm, and improve the adaptivity of photo decrease of noise functions triggering.
In the embodiment of the present invention, the photochrome under the Same Scene of two camera sync photographies and black-and-white photograph is only needed to synthesize, namely the noise reduction of photo can be realized, the method can be applied under the photographed scene of dark or bat at night, under under-exposed or that photosensitivity is excessive shooting condition, improve the imaging effect of photo to a certain extent.
Should be understood that in embodiments of the present invention, the size of the sequence number of above-mentioned each process does not also mean that the priority of execution sequence, and the execution sequence of each process should be determined with its function and internal logic, and should not form any restriction to the implementation process of the embodiment of the present invention.
Corresponding to the method for the photo noise reduction that the embodiment of the present invention provides, Fig. 7 shows the structured flowchart of the device of the photo noise reduction that the embodiment of the present invention provides, this device can run on be integrated with camera and display screen terminal equipment among, such as smart mobile phone, flat board, PDA, camera, etc.For convenience of explanation, illustrate only part related to the present embodiment.
With reference to Fig. 7, this device comprises:
Start unit 71, starts the first camera and second camera, and described first camera is adjacent with described second camera and be positioned at same camera plane.
Photographing unit 72, when shutter instruction being detected, trigger the photochrome of described first camera shooting current scene, and the described second camera of synchronous triggering takes the black-and-white photograph of described current scene.
Synthesis unit 73, exports after described photochrome and the synthesis of described black-and-white photograph.
Alternatively, described device also comprises:
Preview unit, exports in the display screen of terminal, as preview screen in real time by the colour picture of described first camera imaging.
Alternatively, described synthesis unit 73 comprises:
First judgment sub-unit, judges whether default noise reduction instruction to be detected.
First exports subelement, when default noise reduction instruction being detected, exports after described photochrome and the synthesis of described black-and-white photograph.
Second exports subelement, when default noise reduction instruction not detected, is directly exported by described photochrome.
Alternatively, described device also comprises:
Judging unit, judges whether the decrease of noise functions of camera programm is opened.
If described judging unit judges that the decrease of noise functions of camera programm is opened, then described start unit 71 performs the step of described startup first camera and second camera.
Alternatively, described synthesis unit 73 comprises:
Second judgment sub-unit, judges whether the exposure parameter in described photochrome or black-and-white photograph meets the threshold condition preset.
3rd exports subelement, when the exposure parameter in described photochrome or black-and-white photograph meets default threshold condition, exports after described photochrome and the synthesis of described black-and-white photograph.
4th exports subelement, when the exposure parameter in described photochrome or black-and-white photograph does not meet the threshold condition preset, is directly exported by described photochrome.
Shown in Fig. 8 is the block diagram of the part-structure of the mobile phone relevant to the terminal that the embodiment of the present invention provides.With reference to figure 8, mobile phone comprises: the parts such as radio frequency (Radio Frequency, RF) circuit 810, memory 820, input unit 830, display unit 840, first camera 850, second camera 860 and processor 870.It will be understood by those skilled in the art that the handset structure shown in Fig. 8 does not form the restriction to mobile phone, the parts more more or less than diagram can be comprised, or combine some parts, or different parts are arranged.
Concrete introduction is carried out below in conjunction with Fig. 8 each component parts to mobile phone:
RF circuit 810 can be used for receiving and sending messages or in communication process, the reception of signal and transmission, especially, after being received by the downlink information of base station, process to processor 870; In addition, the up data of design are sent to base station.Usually, RF circuit includes but not limited to antenna, at least one amplifier, transceiver, coupler, low noise amplifier (Low Noise Amplifier, LNA), duplexer etc.In addition, RF circuit 810 can also by radio communication and network and other devices communicatings.Above-mentioned radio communication can use arbitrary communication standard or agreement, include but not limited to global system for mobile communications (Global System of Mobilecommunication, GSM), general packet radio service (General Packet Radio Service, GPRS), code division multiple access (Code Division Multiple Access, CDMA), Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, WCDMA), Long Term Evolution (Long TermEvolution, LTE)), Email, Short Message Service (Short Messaging Service, SMS) etc.
Memory 820 can be used for storing software program and module, and processor 870 is stored in software program and the module of memory 820 by running, thus performs various function application and the data processing of mobile phone.Memory 820 mainly can comprise storage program district and store data field, and wherein, storage program district can storage operation system, application program (such as sound-playing function, image player function etc.) etc. needed at least one function; Store data field and can store the data (such as voice data, phone directory etc.) etc. created according to the use of mobile phone.In addition, memory 820 can comprise high-speed random access memory, can also comprise nonvolatile memory, such as at least one disk memory, flush memory device or other volatile solid-state parts.
Input unit 830 can be used for the numeral or the character information that receive input, and generation arranges with the user of mobile phone 800 and function controls the input of relevant key signals.Particularly, input unit 830 can comprise contact panel 831 and other input equipments 832.Contact panel 831, also referred to as touch-screen, user can be collected or neighbouring touch operation (such as user uses any applicable object or the operations of annex on contact panel 831 or near contact panel 831 such as finger, stylus) thereon, and drive corresponding jockey according to the formula preset.Optionally, contact panel 831 can comprise touch detecting apparatus and touch controller two parts.Wherein, touch detecting apparatus detects the touch orientation of user, and detects the signal that touch operation brings, and sends signal to touch controller; Touch controller receives touch information from touch detecting apparatus, and converts it to contact coordinate, then gives processor 870, and the order that energy receiving processor 870 is sent also is performed.In addition, the polytypes such as resistance-type, condenser type, infrared ray and surface acoustic wave can be adopted to realize contact panel 831.Except contact panel 831, input unit 830 can also comprise other input equipments 832.Particularly, other input equipments 832 can include but not limited to one or more in physical keyboard, function key (such as volume control button, switch key etc.), trace ball, mouse, action bars etc.
Display unit 840 can be used for the various menus showing information or the information being supplied to user and the mobile phone inputted by user.Display unit 840 can comprise display screen 841, optionally, the form such as liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) can be adopted to configure display screen 841.Further, contact panel 831 can cover display screen 841, when contact panel 831 detects thereon or after neighbouring touch operation, send processor 870 to determine the type of touch event, on display screen 841, provide corresponding vision to export with preprocessor 870 according to the type of touch event.Although in fig. 8, contact panel 831 and display screen 841 be as two independently parts to realize input and the input function of mobile phone, but in certain embodiments, can by integrated to contact panel 831 and display screen 841 and realize the input and output function of mobile phone.
Processor 870 is control centres of mobile phone, utilize the various piece of various interface and the whole mobile phone of connection, software program in memory 820 and/or module is stored in by running or performing, and call the data be stored in memory 820, perform various function and the deal with data of mobile phone, thus integral monitoring is carried out to mobile phone.Optionally, processor 870 can comprise one or more processing unit; Preferably, processor 870 accessible site application processor and modem processor, wherein, application processor mainly processes operating system, user interface and application program etc., and modem processor mainly processes radio communication.Be understandable that, above-mentioned modem processor also can not be integrated in processor 870.
Although not shown, mobile phone 800 can also comprise power supply, wireless module, bluetooth module, voicefrequency circuit, sensor, does not repeat them here.
In embodiments of the present invention, the processor 870 included by this terminal also has following functions: the method for photo noise reduction, comprising:
Start the first camera and second camera, described first camera is adjacent with described second camera and be positioned at same camera plane;
When shutter instruction being detected, trigger the photochrome of described first camera shooting current scene, and the described second camera of synchronous triggering takes the black-and-white photograph of described current scene;
Export after described photochrome and the synthesis of described black-and-white photograph.
Further, described method also comprises:
The colour picture of described first camera imaging is exported in the display screen of terminal, in real time as preview screen.
Further, described described photochrome and the synthesis of described black-and-white photograph outputs afterwards comprises:
Judge whether default noise reduction instruction to be detected;
When default noise reduction instruction being detected, export after described photochrome and the synthesis of described black-and-white photograph;
When default noise reduction instruction not detected, directly described photochrome is exported.
Further, before described startup first camera and second camera, described method also comprises:
Judge whether the decrease of noise functions of camera programm is opened;
If the decrease of noise functions of camera programm is opened, perform the step of described startup first camera and second camera.
Further, described described photochrome and the synthesis of described black-and-white photograph outputs afterwards comprises:
Judge whether the exposure parameter in described photochrome or black-and-white photograph meets the threshold condition preset;
When the exposure parameter in described photochrome or black-and-white photograph meets default threshold condition, export after described photochrome and the synthesis of described black-and-white photograph;
When the exposure parameter in described photochrome or black-and-white photograph does not meet the threshold condition preset, directly described photochrome is exported.
Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.
If described function using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.
Claims (12)
1. a method for photo noise reduction, is characterized in that, comprising:
Start the first camera and second camera, described first camera is adjacent with described second camera and be positioned at same camera plane;
When shutter instruction being detected, trigger the photochrome of described first camera shooting current scene, and the described second camera of synchronous triggering takes the black-and-white photograph of described current scene;
Export after described photochrome and the synthesis of described black-and-white photograph.
2. the method for claim 1, is characterized in that, described method also comprises:
The colour picture of described first camera imaging is exported in the display screen of terminal, in real time as preview screen.
3. method as claimed in claim 1 or 2, is characterized in that, described described photochrome and the synthesis of described black-and-white photograph outputs afterwards comprises:
Judge whether default noise reduction instruction to be detected;
When default noise reduction instruction being detected, export after described photochrome and the synthesis of described black-and-white photograph;
When default noise reduction instruction not detected, directly described photochrome is exported.
4. method as claimed in claim 1 or 2, it is characterized in that, before described startup first camera and second camera, described method also comprises:
Judge whether the decrease of noise functions of camera programm is opened;
If the decrease of noise functions of camera programm is opened, perform the step of described startup first camera and second camera.
5. method as claimed in claim 1 or 2, is characterized in that, described described photochrome and the synthesis of described black-and-white photograph outputs afterwards comprises:
Judge whether the exposure parameter in described photochrome or black-and-white photograph meets the threshold condition preset;
When the exposure parameter in described photochrome or black-and-white photograph meets default threshold condition, export after described photochrome and the synthesis of described black-and-white photograph;
When the exposure parameter in described photochrome or black-and-white photograph does not meet the threshold condition preset, directly described photochrome is exported.
6. a device for photo noise reduction, is characterized in that, comprising:
Start unit, for starting the first camera and second camera, described first camera is adjacent with described second camera and be positioned at same camera plane;
Photographing unit, for when shutter instruction being detected, trigger the photochrome of described first camera shooting current scene, and the described second camera of synchronous triggering takes the black-and-white photograph of described current scene;
Synthesis unit, for exporting after described photochrome and the synthesis of described black-and-white photograph.
7. device as claimed in claim 6, it is characterized in that, described device also comprises:
Preview unit, for exporting to the colour picture of described first camera imaging in real time in the display screen of terminal, as preview screen.
8. device as claimed in claims 6 or 7, it is characterized in that, described synthesis unit comprises:
First judgment sub-unit, detects default noise reduction instruction for judging whether;
First exports subelement, for when default noise reduction instruction being detected, exports after described photochrome and the synthesis of described black-and-white photograph;
Second exports subelement, for when default noise reduction instruction not detected, is directly exported by described photochrome.
9. device as claimed in claims 6 or 7, it is characterized in that, described device also comprises:
Judging unit, for judging whether the decrease of noise functions of camera programm is opened;
If described judging unit judges that the decrease of noise functions of camera programm is opened, then described start unit performs the step of described startup first camera and second camera.
10. device as claimed in claims 6 or 7, it is characterized in that, described synthesis unit comprises:
Second judgment sub-unit, for judging whether the exposure parameter in described photochrome or black-and-white photograph meets the threshold condition preset;
3rd exports subelement, for meeting default threshold condition when the exposure parameter in described photochrome or black-and-white photograph, exports after described photochrome and the synthesis of described black-and-white photograph;
4th exports subelement, for not meeting when the exposure parameter in described photochrome or black-and-white photograph the threshold condition preset, is directly exported by described photochrome.
11. 1 kinds of terminals, is characterized in that, described terminal comprises the device of the photo noise reduction as described in any one of claim 6 to 10.
12. terminals as claimed in claim 11, it is characterized in that, described terminal comprises smart mobile phone or flat board.
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