CN107040696A - A kind of noise-eliminating method and terminal - Google Patents
A kind of noise-eliminating method and terminal Download PDFInfo
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- CN107040696A CN107040696A CN201710233358.2A CN201710233358A CN107040696A CN 107040696 A CN107040696 A CN 107040696A CN 201710233358 A CN201710233358 A CN 201710233358A CN 107040696 A CN107040696 A CN 107040696A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
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Abstract
The embodiment of the invention discloses a kind of noise-eliminating method and terminal, wherein method includes：Terminal obtains the environmental light intensity angle value at current time when receiving photographing instruction；The noise signal strength values of the terminal camera of environmental light intensity angle value and terminal storage based on the current time got, determine the signal to noise ratio of the terminal camera；If the signal to noise ratio for detecting the terminal camera is less than predetermined threshold value, the image collected to the terminal camera carries out denoising Processing；Obtain the image obtained after denoising Processing.The embodiment of the present invention can improve the image quality under half-light to a certain extent.
Description
Technical field
The present invention relates to field of terminal technology, more particularly to a kind of noise-eliminating method and terminal.
Background technology
Current terminal (such as mobile phone, tablet personal computer) is fitted with camera applications, and user can pass through camera applications
Record each beautiful moment of its daily life.As user increasingly payes attention to the camera function of terminal camera, terminal camera
Effect of taking pictures turns into the major criterion that user weighs handset capability.
Because the camera of terminal camera has electrical characteristic, and prior art can not accomplish definitely smoothly to enter terminal
Row power supply, therefore some power supply ripples can be produced when being powered to terminal, these ripples can be impacted to camera imaging,
Form noise.When camera is taken pictures under the weaker environment of light, because light intensity in kind is very small, the noise of formation
Camera imaging quality can be had a strong impact on, Consumer's Experience is influenceed.
The content of the invention
The embodiment of the present invention provides a kind of noise-eliminating method and terminal, and the imaging matter under half-light can be improved to a certain extent
Amount.
In a first aspect, the embodiments of the invention provide a kind of noise-eliminating method, this method includes：
When receiving photographing instruction, the environmental light intensity angle value at current time is obtained；
The noise signal of the terminal camera of environmental light intensity angle value and terminal storage based on the current time got
Intensity level, determines the signal to noise ratio of the terminal camera；
If the signal to noise ratio for detecting the terminal camera is less than predetermined threshold value, the terminal camera is collected
Image carry out denoising Processing；
Obtain the image obtained after denoising Processing.
On the other hand, the embodiments of the invention provide a kind of terminal, the terminal includes：
Acquiring unit, for when receiving photographing instruction, obtaining the environmental light intensity angle value at current time；
Determining unit, the terminal for the environmental light intensity angle value based on the current time got and terminal storage is imaged
The noise signal strength values of head, determine the signal to noise ratio of the terminal camera；
Processing unit, if being less than predetermined threshold value for the signal to noise ratio for detecting the terminal camera, to the end
The image that end camera is collected carries out denoising Processing；
The acquiring unit, is additionally operable to obtain the image obtained after denoising Processing.
The embodiment of the present invention is by when receiving photographing instruction, obtaining the environmental light intensity angle value at current time, Ran Houji
The letter of the terminal camera is determined in the noise signal strength values of the environmental light intensity angle value and the terminal camera of terminal storage
Make an uproar and compare, if the signal to noise ratio for detecting the terminal camera is less than predetermined threshold value, the image collected to the terminal camera
Denoising Processing is carried out, the image obtained after denoising Processing is finally obtained, the imaging matter under half-light can be improved to a certain extent
Amount.
Brief description of the drawings
Technical scheme, is used required in being described below to embodiment in order to illustrate the embodiments of the present invention more clearly
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow diagram of noise-eliminating method provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic flow diagram for noise-eliminating method that another embodiment of the present invention is provided；
Fig. 3 is a kind of schematic block diagram of terminal provided in an embodiment of the present invention；
Fig. 4 is a kind of terminal schematic block diagram that another embodiment of the present invention is provided；
Fig. 5 is a kind of terminal schematic block diagram that further embodiment of this invention is provided.
Embodiment
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 clear, complete
Site preparation is described.
It should be appreciated that ought be in this specification and in the appended claims in use, term " comprising " and "comprising" be indicated
Described feature, entirety, step, operation, the presence of element and/or component, but be not precluded from one or more of the other feature, it is whole
Body, step, operation, element, component and/or its presence or addition for gathering.
It is also understood that the term used in this description of the invention is merely for the sake of the mesh for describing specific embodiment
And be not intended to limit the present invention.As used in description of the invention and appended claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singulative, " one " and "the" are intended to include plural form.
In the embodiment of the present invention, before terminal is dispatched from the factory, terminal is placed into half-light environment and carries out imaging experiment, so that
The noise signal strength values of terminal camera under half-light are obtained by testing, and by the noise signal of the terminal camera got
Intensity level is stored into terminal.Because the image-forming principle of terminal camera is that the optical signal that will be received is converted into electric signal, so
Afterwards again by the electric signal being converted to storage into terminal internal memory, so the noise signal of terminal camera is converted to
The interference signal that electric signal exists in itself, the noise signal strength values of terminal camera are fixed.End is got by experiment
After the noise signal strength values for holding camera, the noise signal strength values based on the terminal camera got, by a large amount of real
The optimal de-noising coefficient of data acquisition terminal camera is tested, and the optimal de-noising coefficient storage of the terminal camera got is arrived
In terminal.
In some feasible embodiments, before terminal is dispatched from the factory, terminal shooting under half-light can be obtained by testing
The noise signal strength values of each pixel of head, and the noise signal intensity of each pixel based on terminal camera
Value, the optimal de-noising coefficient of each pixel is obtained by lot of experimental data.Finally by the terminal camera got
The noise signal strength values of each pixel and optimal de-noising coefficient storage corresponding with each pixel are into terminal.
It is a kind of schematic flow diagram of noise-eliminating method provided in an embodiment of the present invention referring to Fig. 1, methods described can be by intelligence
Can mobile phone (such as Android phone, iOS mobile phones, Windows Phone mobile phones), tablet personal computer, mobile internet device
(Mobile Internet Devices, MID), camera etc. possess the intelligence of camera, camera function and signal processing function
Can terminal realize that noise-eliminating method as depicted may include following steps：
S101, terminal obtain the environmental light intensity angle value at current time when receiving photographing instruction.
In the embodiment of the present invention, the photographing instruction can be open a terminal camera device function gather image instruction.
The photographing instruction for example can be that terminal user answers by clicking on the virtual photograph button in camera applications interface, or in camera
Inputted with interface by clicking on physics shoot button, photographing instruction can be also inputted by other means, the embodiment of the present invention is not
Limit.
Specifically, terminal is when receiving the photographing instruction of terminal user's input, while starting the ambient light of terminal preset
Sensor running background, then detects the environmental light intensity angle value at current time by the ambient light sensor, it is to be understood that
Also environmental light intensity angle value can be obtained by other means.
The terminal shooting of S102, the terminal environmental light intensity angle value and terminal storage based on the current time got
The noise signal strength values of head, determine the signal to noise ratio of the terminal camera.
In the embodiment of the present invention, the noise signal of the terminal camera refers to believe the light got in terminal camera
When number being converted into electric signal, the interference signal that the electric signal exists in itself.The noise signal strength values of the terminal camera can be with
It is the intensity level of total interference signal of terminal camera.The noise signal strength values of terminal camera can be with its independent one
The form storage of individual value is in the terminal or with the noise signal strength values of other-end camera in the lump with database
Form is stored in the terminal, because for the camera of same terminal or the camera of same model, its noise signal
Intensity level can be regarded as identical, so the database includes noise signal strength values and terminal models or camera model
Corresponding relation.It is understood that can also be that corresponding relation otherwise is strong by the noise signal of terminal camera
Angle value is stored in terminal database or is stored the noise signal strength values of terminal camera with other storage forms
In the terminal.
Specifically, terminal obtains terminal storage first after the environmental light intensity angle value at current time (such as P) is got
Terminal camera noise signal strength values (such as N).If the noise signal strength values of terminal camera be with its independent one
The form storage of individual value in the terminal, then directly obtains the noise signal strength values N of terminal camera from terminal；If terminal is imaged
The noise signal strength values of head are that storage in the terminal, is then looked into based on terminal models or camera model in the form of database
Database is ask, the noise signal strength values N of terminal camera is obtained by inquiring about database.Then the terminal got is deposited
The noise signal strength values of the terminal camera of storage change into light intensity value (such as M candelas/square metre (abbreviation Mcd/ ㎡)).
Finally by the environmental light intensity angle value P at the current time got divided by conversion obtain with the noise of the terminal camera got
The corresponding light intensity value M of signal strength values, obtains the signal to noise ratio P/M at terminal camera current time.
In some feasible embodiments, the noise signal strength values of the terminal camera of terminal storage, including terminal
The noise signal strength values of each pixel of camera.Specifically, terminal is getting the ambient light intensity at current time
After value P, first according to each pixel of the noise signal strength values of the terminal camera of terminal storage acquisition terminal camera
Total noise signal strength values (such as K), i.e., obtain each pixel total by the noise signal strength values addition of each pixel
Noise signal strength values K.Then the total noise signal strength values K of the terminal camera got each pixel is changed into
Light intensity value (such as H cd/ ㎡)).Finally by the environmental light intensity angle value P at the current time got divided by conversion obtain with
The corresponding light intensity value H of the total noise signal strength values of each pixel of the terminal camera got, obtains terminal camera
The signal to noise ratio P/H at current time.
If the signal to noise ratio that S103, the terminal detect the terminal camera is less than predetermined threshold value, to the end
The image that end camera is collected carries out denoising Processing.
In the embodiment of the present invention, terminal is in the environmental light intensity angle value based on the current time got and terminal storage
The noise signal strength values of terminal camera are determined after the signal to noise ratio P/M or P/H at terminal camera current time, are detected
Whether the signal to noise ratio at terminal camera current time is less than predetermined threshold value (such as 15), if detecting terminal camera current time
Signal to noise ratio be less than predetermined threshold value, then the image that is collected to terminal camera carries out denoising Processing.Wherein, terminal camera is adopted
The image collected can be when opening a terminal camera device the preview image of the image accessed by terminal camera or
Terminal is after photographing instruction is received, and control terminal camera is taken pictures obtained image, and the embodiment of the present invention is not limited.
In the embodiment of the present invention, the image that terminal-pair terminal camera is collected carries out denoising Processing, including based on terminal
The image that the noise signal strength values of camera are collected to terminal camera carries out denoising Processing.Terminal obtains terminal and taken the photograph first
As total signal strength values that head current time receives, the noise signal of preset de-noising coefficient and the camera is then calculated
The product of intensity level, obtains the first parameter, the total signal intensity received finally by computing terminal camera current time
Value eliminates the noise for the image that the terminal camera is collected with the difference of first parameter.Wherein, the preset de-noising system
Number is optimal de-noising coefficient corresponding with the noise signal strength values of the terminal camera.
Specifically, terminal carries out denoising Processing using the folded image cut algorithm to be collected to terminal camera of noise.Eventually
End obtains the total signal strength values (such as Y) received at terminal camera current time first, then obtains terminal preset
De-noising coefficient (such as K), and the noise signal strength values N of preset de-noising COEFFICIENT K and terminal camera product is calculated, obtain
One parameter KN；Then total signal strength values Y's for being received by computing terminal camera current time and the first parameter KN
Difference obtains useful signal (such as S)；Finally according to the figure after the useful signal S formation denoising Processings obtained after denoising Processing
Picture.The noise for the image that terminal camera is collected can be eliminated to a certain extent using this mode.In summary, noise is folded subtracts
Formula indicated by algorithm is S=Y-KN, wherein, S is useful signal, and Y is receive at terminal camera current time total
Signal strength values, N is the noise signal strength values of terminal camera, and K is preset de-noising coefficient.
In some feasible embodiments, folded using a noise and cut algorithm to eliminate the figure that terminal camera is collected
After the noise of picture, terminal, which detects the image obtained after denoising Processing and remained unchanged, can not meet preset quality requirement, then will calculate
Obtained useful signal S is folded using noise cut algorithm to eliminate making an uproar for the image that terminal camera is collected again as parameter Y
Point, by that analogy, is detected untill the image that is obtained after denoising Processing meets preset quality requirement until terminal.
In the embodiment of the present invention, the de-noising coefficient of terminal camera can be stored in end in the form of its independent value
Store in the terminal, can also be with the noise signal strength values with terminal camera in end or in the form of database
And/or terminal models and/or the corresponding relation of camera model are stored in terminal database.It is understood that can be with
It is to store otherwise in the terminal.
In some feasible embodiments, terminal cuts algorithm come the image collected to terminal camera using noise is folded
Carry out denoising Processing, including the noise signal strength values based on terminal camera each pixel are collected to terminal camera
Image carries out denoising Processing.By taking the first pixel that terminal camera includes as an example, terminal obtains terminal camera first to be included
Total signal strength values for receiving of the first pixel current time, then obtain the corresponding with the first pixel of terminal preset
De-noising coefficient and noise signal strength values, and calculate the noise signal strength values of preset the de-noising coefficient and the first pixel
Product, obtain the first parameter；Finally by calculating total signal strength values for receiving of the first pixel current time and the
The difference of one parameter obtains useful signal, and the noise signal of the first pixel can be eliminated to a certain extent.By that analogy, eventually
Other pixels that end is included using mode is ordered the same with the first pixel to terminal camera carry out denoising Processing, herein no longer
Repeat.Terminal is finally according to the image after the useful signal formation denoising Processing of each pixel obtained after denoising Processing.
The noise for the image that terminal camera is collected can be eliminated to a certain extent using the above method, obtained compared with high imaging quality
Image.Wherein, the de-noising coefficient of each pixel of terminal camera can be to be made an uproar with each pixel of terminal camera
Point signal strength values and/or terminal models and/or the corresponding relation of camera model are stored in terminal database.It is appreciated that
, can also be and store otherwise in the terminal.
S104, the terminal obtain the image obtained after denoising Processing.
In the embodiment of the present invention, terminal is carried out in the image collected to terminal camera after denoising Processing, and acquisition disappears
Make an uproar obtained image after processing, and preserve the image obtained after the denoising Processing got.In some feasible embodiments,
Terminal is got after the image obtained after denoising Processing, and the image obtained after the denoising Processing is shown on a terminal screen,
So that whether warning terminal user preserves the image obtained after the denoising Processing, and protected in the determination for receiving terminal user's input
Deposit after instruction, preserve the image obtained after the denoising Processing.It should be noted that terminal will can be obtained after the denoising Processing
Image is preserved into picture library, photograph album, cloud photograph album and/or cloud disk, and the embodiment of the present invention is not limited.
In some feasible embodiments, if the signal to noise ratio that terminal detects terminal camera is more than or equal to default threshold
Value, then can determine that ambient light intensity is larger, and terminal camera image quality is preferable, so terminal need not be adopted to terminal camera
The image collected carries out denoising Processing, but directly control terminal camera is taken pictures, so as to obtain image and preserve the bat
According to obtained image.
In some feasible embodiments, if terminal includes multiple cameras (such as 2), and the finger of taking pictures received
Order indicates to be taken pictures by multiple cameras of terminal, and terminal is then when detecting some or some terminal cameras are current
When the signal to noise ratio at quarter is less than predetermined threshold value, some or some terminal cameras of predetermined threshold value are less than to the signal to noise ratio that detects
The image collected carries out denoising Processing.Specifically, terminal is less than each terminal of predetermined threshold value according to the signal to noise ratio detected
The noise signal strength values and its de-noising coefficient of camera, or each end according to the signal to noise ratio detected less than predetermined threshold value
The noise signal strength values and de-noising coefficient corresponding with each pixel of each pixel that end camera includes, using making an uproar
Folded cut algorithm of point is less than to the signal to noise ratio detected at the image progress de-noising that each terminal camera of predetermined threshold value is collected
Reason.
The embodiment of the present invention is by when receiving photographing instruction, obtaining the environmental light intensity angle value at current time, Ran Houji
The letter of the terminal camera is determined in the noise signal strength values of the environmental light intensity angle value and the terminal camera of terminal storage
Make an uproar and compare, if the signal to noise ratio for detecting the terminal camera is less than predetermined threshold value, the image collected to the terminal camera
Denoising Processing is carried out, the image obtained after denoising Processing is finally obtained, the imaging matter under half-light can be improved to a certain extent
Amount.
It is a kind of schematic flow diagram for noise-eliminating method that another embodiment of the present invention is provided referring to Fig. 2, methods described can be with
Possesses camera, camera function and signal transacting work(by smart mobile phone, tablet personal computer, mobile internet device, camera etc.
Can intelligent terminal realize that noise-eliminating method as depicted may include following steps：
S201, terminal start preset environment optical sensor running background when receiving photographing instruction, and by described pre-
Put the environmental light intensity angle value that ambient light sensor obtains current time.
In the embodiment of the present invention, the photographing instruction can be open a terminal camera device function gather image instruction.
The photographing instruction for example can be that terminal user answers by clicking on the virtual photograph button in camera applications interface, or in camera
Inputted with interface by clicking on physics shoot button, photographing instruction can be also inputted by other means, the embodiment of the present invention is not
Limit.
Specifically, terminal is when receiving the photographing instruction of terminal user's input, while starting the ambient light of terminal preset
Sensor running background, then detects the environmental light intensity angle value at current time by the ambient light sensor, it is to be understood that
Also environmental light intensity angle value can be obtained by other means.
The terminal shooting of S202, the terminal environmental light intensity angle value and terminal storage based on the current time got
The noise signal strength values of head, determine the signal to noise ratio of the terminal camera.
In the embodiment of the present invention, the noise signal of the terminal camera refers to believe the light got in terminal camera
When number being converted into electric signal, the interference signal that the electric signal exists in itself.The noise signal strength values of the terminal camera can be with
It is the intensity level of total interference signal of terminal camera.The noise signal strength values of terminal camera can be with its independent one
The form storage of individual value is in the terminal or with the noise signal strength values of other-end camera in the lump with database
Form is stored in the terminal, because for the camera of same terminal or the camera of same model, its noise signal
Intensity level can be regarded as identical, so the database includes noise signal strength values and terminal models or camera model
Corresponding relation.It is understood that can also be that corresponding relation otherwise is strong by the noise signal of terminal camera
Angle value is stored in terminal database or is stored the noise signal strength values of terminal camera with other storage forms
In the terminal.
Specifically, terminal obtains the terminal of terminal storage first after the environmental light intensity angle value P at current time is got
The noise signal strength values N of camera.If the noise signal strength values of terminal camera are deposited in the form of its independent value
Storage in the terminal, then directly obtains the noise signal strength values N of terminal camera from terminal；If the noise signal of terminal camera
Intensity level is that storage in the terminal, then based on terminal models or camera model inquiry database, is led in the form of database
Inquiry database is crossed to obtain the noise signal strength values N of terminal camera.Then the terminal of the terminal storage got is taken the photograph
As the noise signal strength values of head change into light intensity value M.Finally by the environmental light intensity angle value P at the current time got divided by
The corresponding light intensity value M of the obtained noise signal strength values of the terminal camera with getting is converted, terminal camera is obtained
The signal to noise ratio P/M at current time.
In some feasible embodiments, the noise signal strength values of the terminal camera of terminal storage, including terminal
The noise signal strength values of each pixel of camera.Specifically, terminal is getting the ambient light intensity at current time
After value P, first according to each pixel of the noise signal strength values of the terminal camera of terminal storage acquisition terminal camera
Total noise signal strength values (such as K), i.e., obtain each pixel total by the noise signal strength values addition of each pixel
Noise signal strength values K.Then the total noise signal strength values K of the terminal camera got each pixel is changed into
Light intensity value (such as H cd/ ㎡)).Finally by the environmental light intensity angle value P at the current time got divided by conversion obtain with
The corresponding light intensity value H of the total noise signal strength values of each pixel of the terminal camera got, obtains terminal camera
The signal to noise ratio P/H at current time.
S203, the terminal detect whether the signal to noise ratio of the terminal camera is less than predetermined threshold value, if so, then performing step
Rapid S204~step S206；If it is not, then performing step S207.
Specifically, after terminal determines the signal to noise ratio P/M or P/H at terminal camera current time, by what is determined
Signal to noise ratio is contrasted with predetermined threshold value, if detecting signal to noise ratio less than predetermined threshold value, it is determined that the imaging matter of terminal camera
Amount can not meet preset requirement, and the image that terminal camera is collected is disappeared by performing step S204~step S205
Make an uproar processing, after the image collected to terminal camera carries out denoising Processing, perform step S206.If detecting signal to noise ratio
More than or equal to predetermined threshold value, then step S207 is performed.Wherein, the image that terminal camera is collected can be opened a terminal
The preview image or terminal of image during camera device accessed by terminal camera receive photographing instruction it
Afterwards, control terminal camera is taken pictures obtained image, and the embodiment of the present invention is not limited.
S204, the terminal obtain the total signal strength values received at the terminal camera current time.
Specifically, if the signal to noise ratio that terminal detects terminal camera current time is less than predetermined threshold value, terminal is obtained
The image that camera is collected, the image then collected according to terminal camera obtains the reception of terminal camera current time
The total signal strength values arrived.In some feasible embodiments, the image that can be collected according to terminal camera is obtained
Total signal strength values that each pixel current time of terminal camera receives.
Total signal strength values that S205, the terminal are received based on the terminal camera current time and described
The noise signal strength values of terminal camera, the image collected to the terminal camera carries out denoising Processing.
Specifically, terminal carries out denoising Processing using the folded image cut algorithm to be collected to terminal camera of noise.Eventually
End obtains the total signal strength values Y received at terminal camera current time first, then obtains the de-noising system of terminal preset
Number K, and the noise signal strength values N of preset de-noising COEFFICIENT K and terminal camera product is calculated, obtain the first parameter KN；Connect
The difference for the total signal strength values Y received by computing terminal camera current time and the first parameter KN is obtained effectively
Signal S, finally according to the image after the useful signal S formation denoising Processings obtained after denoising Processing.Can be one using this mode
Determine the noise signal of the image that elimination terminal camera is collected in degree.In summary, the folded indicated public affairs that cut algorithm of noise
Formula is S=Y-KN.According to noise it is folded cut algorithm eliminate the image that terminal camera is collected noise after, terminal
Preset quality requirement can not be met by detecting the image obtained after denoising Processing and remaining unchanged, then will calculate obtained useful signal S and make
For parameter Y, folded using noise cut algorithm to eliminate the noise for the image that terminal camera is collected again, by that analogy, until
Terminal is detected untill the image obtained after denoising Processing meets preset quality requirement.
In the embodiment of the present invention, the de-noising coefficient of terminal camera can be stored in end in the form of its independent value
Store in the terminal, can also be with the noise signal strength values with terminal camera in end or in the form of database
And/or terminal models and/or the corresponding relation of camera model are stored in terminal database.It is understood that can be with
It is to store otherwise in the terminal.
In some feasible embodiments, terminal cuts algorithm come the image collected to terminal camera using noise is folded
Carry out denoising Processing, including the noise signal strength values based on terminal camera each pixel are collected to terminal camera
Image carries out denoising Processing.By taking the first pixel that terminal camera includes as an example, terminal obtains terminal camera first to be included
Total signal strength values for receiving of the first pixel current time, then obtain the corresponding with the first pixel of terminal preset
De-noising coefficient and noise signal strength values, and calculate the noise signal strength values of preset the de-noising coefficient and the first pixel
Product, obtain the first parameter；Finally by calculating total signal strength values for receiving of the first pixel current time and the
The difference of one parameter obtains useful signal, and the noise signal of the first pixel can be eliminated to a certain extent.By that analogy, eventually
Other pixels that end is included using mode is ordered the same with the first pixel to terminal camera carry out denoising Processing, herein no longer
Repeat.Terminal is finally according to the image after the useful signal formation denoising Processing of each pixel obtained after denoising Processing.
The noise for the image that terminal camera is collected can be eliminated to a certain extent using the above method, obtained compared with high imaging quality
Image.
S206, the terminal obtain the image obtained after denoising Processing, and preserve the image obtained after the denoising Processing.
In the embodiment of the present invention, terminal is carried out in the image collected to terminal camera after denoising Processing, and acquisition disappears
Make an uproar obtained image after processing, and preserve the image obtained after the denoising Processing got.In some feasible embodiments,
Terminal is got after the image obtained after denoising Processing, and the image obtained after the denoising Processing is shown on a terminal screen,
So that whether warning terminal user preserves the image obtained after the denoising Processing, and protected in the determination for receiving terminal user's input
Deposit after instruction, preserve the image obtained after the denoising Processing.It should be noted that terminal will can be obtained after the denoising Processing
Image is preserved into picture library, photograph album, cloud photograph album and/or cloud disk, and the embodiment of the present invention is not limited.
Terminal camera described in S207, the terminal control is taken pictures, and preserves the image taken pictures and obtained.
, can be true if the signal to noise ratio that terminal detects terminal camera is more than or equal to predetermined threshold value in the embodiment of the present invention
Determine ambient light intensity larger, terminal camera image quality is preferable, so the figure that terminal need not be collected to terminal camera
As carrying out denoising Processing, but directly control terminal camera is taken pictures, and is obtained image and is preserved the obtained image of taking pictures.
The embodiment of the present invention is by when receiving photographing instruction, obtaining the environmental light intensity angle value at current time, Ran Houji
The letter of the terminal camera is determined in the noise signal strength values of the environmental light intensity angle value and the terminal camera of terminal storage
Make an uproar and compare, if the signal to noise ratio for detecting the terminal camera is less than predetermined threshold value, the image collected to the terminal camera
Denoising Processing is carried out, the image obtained after denoising Processing is finally obtained, the imaging matter under half-light can be improved to a certain extent
Amount.
It is a kind of schematic block diagram of terminal provided in an embodiment of the present invention referring to Fig. 3.Described in the embodiment of the present invention
A kind of terminal, including：
Acquiring unit 301, for when receiving photographing instruction, obtaining the environmental light intensity angle value at current time.
In the embodiment of the present invention, the photographing instruction can be open a terminal camera device function gather image instruction.
The photographing instruction for example can be that terminal user answers by clicking on the virtual photograph button in camera applications interface, or in camera
Inputted with interface by clicking on physics shoot button, photographing instruction can be also inputted by other means, the embodiment of the present invention is not
Limit.
Determining unit 302, for environmental light intensity angle value and the terminal of terminal storage based on the current time got
The noise signal strength values of camera, determine the signal to noise ratio of the terminal camera.
Processing unit 303, if being less than predetermined threshold value for the signal to noise ratio for detecting the terminal camera, to described
The image that terminal camera is collected carries out denoising Processing.
In the embodiment of the present invention, the image that terminal camera is collected can be that terminal is imaged when opening a terminal camera device
The preview image or terminal of image accessed by head are after photographing instruction is received, and control terminal camera is clapped
According to obtained image, the embodiment of the present invention is not limited.
The acquiring unit 301, is additionally operable to obtain the image obtained after denoising Processing.
The processing unit 303, specifically for the noise signal strength values based on the terminal camera to the terminal
The image that camera is collected carries out denoising Processing, and the noise signal of the terminal camera refers in the terminal camera
When the optical signal got is converted into electric signal, interference signal present in the electric signal.
The acquiring unit 301, is additionally operable to obtain total signal intensity that the terminal camera current time receives
Value.
The processing unit 303 is strong specifically for total signal for being received based on the terminal camera current time
The noise signal strength values of angle value and the terminal camera, the image collected to the terminal camera is carried out at de-noising
Reason.
Specifically, processing unit 303 calculates the noise signal intensity of preset de-noising coefficient and the terminal camera first
The product of value, obtains the first parameter；Then by calculating total signal intensity that the terminal camera current time receives
Value eliminates the noise for the image that the terminal camera is collected with the difference of first parameter.
Control unit 304, is more than if being additionally operable to the signal to noise ratio that the processing unit 303 detects the terminal camera
Or equal to predetermined threshold value, then control the terminal camera to take pictures.
In some feasible embodiments, acquiring unit 301 is got to be entered to the image that the terminal camera is collected
After the image obtained after row denoising Processing, or the control terminal camera of control unit 304 is taken pictures after obtaining image, can
Take pictures obtained image or the image obtained after the denoising Processing got are preserved with direct；It can also will first take pictures and obtain
Image or the denoising Processing that gets after obtained image show on a terminal screen, so as to warning terminal user whether
Take pictures obtained image or the image obtained after the denoising Processing got are preserved, and is receiving terminal user's input
It is determined that preserving after instruction, take pictures obtained image or the image obtained after the denoising Processing got is preserved.Need
It is bright, terminal can will take pictures obtained image or the image that is obtained after the denoising Processing got preserve to picture library,
In photograph album, cloud photograph album and/or cloud disk, the embodiment of the present invention is not limited.
It should be noted that the function of each functional unit of terminal described by the embodiment of the present invention can be according to the above method
Method in embodiment is implemented, and it implements the associated description that process is referred to above method embodiment, herein not
Repeat again.
The embodiment of the present invention is by when receiving photographing instruction, obtaining the environmental light intensity angle value at current time, Ran Houji
The letter of the terminal camera is determined in the noise signal strength values of the environmental light intensity angle value and the terminal camera of terminal storage
Make an uproar and compare, if the signal to noise ratio for detecting the terminal camera is less than predetermined threshold value, the image collected to the terminal camera
Denoising Processing is carried out, the image obtained after denoising Processing is finally obtained, the imaging matter under half-light can be improved to a certain extent
Amount.
It is a kind of schematic block diagram for terminal that another embodiment of the present invention is provided referring to Fig. 4.Institute in the embodiment of the present invention
A kind of terminal of description, including：
Acquiring unit 401, for when receiving photographing instruction, obtaining the environmental light intensity angle value at current time.
In the embodiment of the present invention, the photographing instruction can be open a terminal camera device function gather image instruction.
The photographing instruction for example can be that terminal user answers by clicking on the virtual photograph button in camera applications interface, or in camera
Inputted with interface by clicking on physics shoot button, photographing instruction can be also inputted by other means, the embodiment of the present invention is not
Limit.
Determining unit 402, for environmental light intensity angle value and the terminal of terminal storage based on the current time got
The noise signal strength values of camera, determine the signal to noise ratio of the terminal camera.
Processing unit 403, if being less than predetermined threshold value for the signal to noise ratio for detecting the terminal camera, to described
The image that terminal camera is collected carries out denoising Processing.
In the embodiment of the present invention, the image that terminal camera is collected can be that terminal is imaged when opening a terminal camera device
The preview image or terminal of image accessed by head are after photographing instruction is received, and control terminal camera is clapped
According to obtained image, the embodiment of the present invention is not limited.
The acquiring unit 401, is additionally operable to obtain the image obtained after denoising Processing.
The processing unit 403, specifically for the noise signal strength values based on the terminal camera to the terminal
The image that camera is collected carries out denoising Processing, and the noise signal of the terminal camera refers in the terminal camera
When the optical signal got is converted into electric signal, interference signal present in the electric signal.
The acquiring unit 401, is additionally operable to obtain total signal intensity that the terminal camera current time receives
Value.
The processing unit 403 is strong specifically for total signal for being received based on the terminal camera current time
The noise signal strength values of angle value and the terminal camera, the image collected to the terminal camera is carried out at de-noising
Reason.
Computing unit 405, for calculating multiplying for preset de-noising coefficient and the noise signal strength values of the terminal camera
Product, obtains the first parameter.
The processing unit 403, specifically for calculating the terminal camera current time by the computing unit 405
The total signal strength values received eliminate the image that the terminal camera is collected with the difference of first parameter
Noise.
Start unit 406, for when receiving photographing instruction, starting preset environment optical sensor running background.
The acquiring unit 401, the ambient light specifically for obtaining current time by the preset environment optical sensor
Intensity level.
Control unit 404, is more than if being additionally operable to the signal to noise ratio that the processing unit 403 detects the terminal camera
Or equal to predetermined threshold value, then control the terminal camera to take pictures.
In some feasible embodiments, acquiring unit 401 is got to be entered to the image that the terminal camera is collected
After the image obtained after row denoising Processing, or the control terminal camera of control unit 404 is taken pictures after obtaining image, can
Take pictures obtained image or the image obtained after the denoising Processing got are preserved with direct；It can also will first take pictures and obtain
Image or the denoising Processing that gets after obtained image show on a terminal screen, so as to warning terminal user whether
Take pictures obtained image or the image obtained after the denoising Processing got are preserved, and is receiving terminal user's input
It is determined that preserving after instruction, take pictures obtained image or the image obtained after the denoising Processing got is preserved.Need
It is bright, terminal can will take pictures obtained image or the image that is obtained after the denoising Processing got preserve to picture library,
In photograph album, cloud photograph album and/or cloud disk, the embodiment of the present invention is not limited.
It should be noted that the function of each functional unit of terminal described by the embodiment of the present invention can be according to the above method
Method in embodiment is implemented, and it implements the associated description that process is referred to above method embodiment, herein not
Repeat again.
The embodiment of the present invention is by when receiving photographing instruction, obtaining the environmental light intensity angle value at current time, Ran Houji
The letter of the terminal camera is determined in the noise signal strength values of the environmental light intensity angle value and the terminal camera of terminal storage
Make an uproar and compare, if the signal to noise ratio for detecting the terminal camera is less than predetermined threshold value, the image collected to the terminal camera
Denoising Processing is carried out, the image obtained after denoising Processing is finally obtained, the imaging matter under half-light can be improved to a certain extent
Amount.
It is a kind of schematic block diagram for terminal that further embodiment of this invention is provided referring to Fig. 5.This implementation as depicted
A kind of terminal in example can include：At least one input equipment 501；At least one output equipment 502；At least one processor
503, such as CPU；With memory 504, above-mentioned input equipment 501, output equipment 502, processor 503 and memory 504 pass through
Bus 505 is connected.
Wherein, output equipment 502 for example can be the screen for output, such as display screen (Display), touch screen, defeated
It for example can be the keyboard (Keyboard) for input, the camera for capture images, for playing sound to enter equipment 501
Receiver and loudspeaker of signal etc. are, it is necessary to illustrate, display screen and touch screen herein can be the integrated design, key
Disk both can be physical keyboard, or touch screen dummy keyboard, the keyboard that can also be combined for entity with touch screen virtualphase.Deposit
Reservoir 504 is used for store instruction, and processor 503 is used for the program for performing the storage of memory 504.Wherein：
Input equipment 501, for receiving photographing instruction.
In the embodiment of the present invention, the photographing instruction can be open a terminal camera device function gather image instruction.
The photographing instruction for example can be that terminal user answers by clicking on the virtual photograph button in camera applications interface, or in camera
Inputted with interface by clicking on physics shoot button, photographing instruction can be also inputted by other means, the embodiment of the present invention is not
Limit.
Processor 503, for when above-mentioned input equipment 501 receives photographing instruction, obtaining the ambient light at current time
Intensity level.
Above-mentioned processor 503, is additionally operable to environmental light intensity angle value based on the current time got and terminal storage
The noise signal strength values of terminal camera, determine the signal to noise ratio of the terminal camera.
Above-mentioned processor 503, it is right if the signal to noise ratio for being additionally operable to detect the terminal camera is less than predetermined threshold value
The image that the terminal camera is collected carries out denoising Processing.
In the embodiment of the present invention, the image that terminal camera is collected can be that terminal is imaged when opening a terminal camera device
The preview image or terminal of image accessed by head are after photographing instruction is received, and control terminal camera is clapped
According to obtained image, the embodiment of the present invention is not limited.
Above-mentioned processor 503, is additionally operable to obtain the image obtained after denoising Processing.
Above-mentioned processor 503, takes the photograph specifically for the noise signal strength values based on the terminal camera to the terminal
The image collected as head carries out denoising Processing, and the noise signal of the terminal camera refers to will in the terminal camera
When the optical signal got is converted into electric signal, interference signal present in the electric signal.
Above-mentioned processor 503, is additionally operable to obtain total signal strength values that the terminal camera current time receives.
Above-mentioned processor 503, specifically for the total signal intensity received based on the terminal camera current time
The noise signal strength values of value and the terminal camera, the image collected to the terminal camera is carried out at de-noising
Reason.
Above-mentioned processor 503, is additionally operable to calculate the noise signal strength values of preset de-noising coefficient and the terminal camera
Product, obtain the first parameter.
Above-mentioned processor 503, specifically for calculating the terminal camera current time reception by the computing unit
To the difference of total signal strength values and first parameter eliminate the noise for the image that the terminal camera is collected.
Above-mentioned processor 503, is additionally operable to when receiving photographing instruction, starts preset environment optical sensor running background.
Above-mentioned processor 503, the environmental light intensity specifically for obtaining current time by the preset environment optical sensor
Angle value.
Above-mentioned processor 503, if being additionally operable to detect the signal to noise ratio of the terminal camera more than or equal to default
Threshold value, then control the terminal camera to take pictures.
In some feasible embodiments, processor 503 gets the image collected to the terminal camera and carried out
After the image obtained after denoising Processing, or control terminal camera is taken pictures after obtaining image, can directly preserve bat
According to the image obtained after obtained image or the denoising Processing got；It can also will first be taken pictures by output equipment 502
Obtained image or the image obtained after the denoising Processing got are shown on a terminal screen, so as to warning terminal user
Whether preservation is taken pictures obtained image or the image obtained after the denoising Processing got, and is received in input equipment 501
Preserve after instruction, preserve after take pictures obtained image or the denoising Processing got to the determination that terminal user inputs
The image arrived.Obtained it should be noted that processor 503 will can take pictures after obtained image or the denoising Processing got
To image preserve into picture library, photograph album, cloud photograph album and/or cloud disk, the embodiment of the present invention is not limited.
In the specific implementation, processor 503, input equipment 501, the and of output equipment 502 described in the embodiment of the present invention
Memory 504 can perform the first embodiment of above method embodiment, the realization side of noise-eliminating method described by second embodiment
Formula, also can perform the first embodiment of said apparatus embodiment, the implementation of the terminal described by second embodiment, herein not
Repeat again.
The embodiment of the present invention is by when receiving photographing instruction, obtaining the environmental light intensity angle value at current time, Ran Houji
The letter of the terminal camera is determined in the noise signal strength values of the environmental light intensity angle value and the terminal camera of terminal storage
Make an uproar and compare, if the signal to noise ratio for detecting the terminal camera is less than predetermined threshold value, the image collected to the terminal camera
Denoising Processing is carried out, the image obtained after denoising Processing is finally obtained, the imaging matter under half-light can be improved to a certain extent
Amount.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, the composition and step of each example are generally described according to function in the above description.This
A little functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specially
Industry technical staff can realize described function to each specific application using distinct methods, but this realization is not
It is considered as beyond the scope of this invention.
It is apparent to those skilled in the art that, for convenience of description and succinctly, the end of foregoing description
End and the specific work process of unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
, can be by it in several embodiments provided herein, it should be understood that disclosed terminal and method
Its mode is realized.For example, device embodiment described above is only schematical, for example, the division of the unit, only
Only a kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can be tied
Another system is closed or is desirably integrated into, or some features can be ignored, or do not perform.In addition, shown or discussed phase
Coupling or direct-coupling or communication connection between mutually can be INDIRECT COUPLING or the communication by some interfaces, device or unit
Connection or electricity, mechanical or other forms are connected.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize scheme of the embodiment of the present invention according to the actual needs
Purpose.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
It is that unit is individually physically present or two or more units are integrated in a unit.It is above-mentioned integrated
Unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially
The part contributed in other words to prior art, or all or part of the technical scheme can be in the form of software product
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the invention
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory,
ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. are various can be with storage program
The medium of code.
Step in present invention method can be sequentially adjusted, merged and deleted according to actual needs.
Unit in terminal of the embodiment of the present invention can be combined, divided and deleted according to actual needs.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain be defined.
Claims (12)
1. a kind of noise-eliminating method, it is characterised in that including：
When receiving photographing instruction, the environmental light intensity angle value at current time is obtained；
The noise signal intensity of the terminal camera of environmental light intensity angle value and terminal storage based on the current time got
Value, determines the signal to noise ratio of the terminal camera；
If the signal to noise ratio for detecting the terminal camera is less than predetermined threshold value, the figure collected to the terminal camera
As carrying out denoising Processing；
Obtain the image obtained after denoising Processing.
2. according to the method described in claim 1, it is characterised in that the image collected to the terminal camera is carried out
Denoising Processing, including：
The image that noise signal strength values based on the terminal camera are collected to the terminal camera is carried out at de-noising
Reason, the noise signal of the terminal camera refers to the optical signal got is converted into electric signal in the terminal camera
When, interference signal present in the electric signal.
3. method according to claim 2, it is characterised in that the noise signal intensity based on the terminal camera
The image that value is collected to the terminal camera carries out denoising Processing, including：
Obtain total signal strength values that the terminal camera current time receives；
The total signal strength values and the noise of the terminal camera received based on the terminal camera current time
Signal strength values, the image collected to the terminal camera carries out denoising Processing.
4. method according to claim 3, it is characterised in that described to be received based on the terminal camera current time
Total signal strength values and the terminal camera noise signal strength values, the figure collected to the terminal camera
As carrying out denoising Processing, including：
The product of preset de-noising coefficient and the noise signal strength values of the terminal camera is calculated, the first parameter is obtained；
By calculating total signal strength values and the difference of first parameter that the terminal camera current time receives
To eliminate the noise for the image that the terminal camera is collected.
5. the method according to any one of Claims 1 to 4, it is characterised in that described when receiving photographing instruction, is obtained
The environmental light intensity angle value at current time, including：
When receiving photographing instruction, start preset environment optical sensor running background；
The environmental light intensity angle value at current time is obtained by the preset environment optical sensor.
6. the method according to any one of Claims 1 to 4, it is characterised in that methods described also includes：
If the signal to noise ratio for detecting the terminal camera is more than or equal to predetermined threshold value, the terminal camera is controlled
Take pictures.
7. a kind of terminal, it is characterised in that including：
Acquiring unit, for when receiving photographing instruction, obtaining the environmental light intensity angle value at current time；
Determining unit, for the environmental light intensity angle value based on the current time got and the terminal camera of terminal storage
Noise signal strength values, determine the signal to noise ratio of the terminal camera；
Processing unit, if being less than predetermined threshold value for the signal to noise ratio for detecting the terminal camera, takes the photograph to the terminal
The image collected as head carries out denoising Processing；
The acquiring unit, is additionally operable to obtain the image obtained after denoising Processing.
8. terminal according to claim 7, it is characterised in that
The processing unit, is adopted specifically for the noise signal strength values based on the terminal camera to the terminal camera
The image collected carries out denoising Processing, and the noise signal of the terminal camera refers to get in the terminal camera
Optical signal when being converted into electric signal, interference signal present in the electric signal.
9. terminal according to claim 8, it is characterised in that
The acquiring unit, is additionally operable to obtain total signal strength values that the terminal camera current time receives；
The processing unit, specifically for total signal strength values for being received based on the terminal camera current time and
The noise signal strength values of the terminal camera, the image collected to the terminal camera carries out denoising Processing.
10. terminal according to claim 9, it is characterised in that the terminal also includes：
Computing unit, the product for calculating preset de-noising coefficient and the noise signal strength values of the terminal camera, is obtained
First parameter；
Wherein, the processing unit, specifically for calculating the terminal camera current time reception by the computing unit
To the difference of total signal strength values and first parameter eliminate the noise for the image that the terminal camera is collected.
11. the terminal according to any one of claim 7~10, it is characterised in that the terminal also includes：
Start unit, for when receiving photographing instruction, starting preset environment optical sensor running background；
Wherein, the acquiring unit, the environmental light intensity specifically for obtaining current time by the preset environment optical sensor
Angle value.
12. the device according to any one of claim 7~10, it is characterised in that the terminal also includes：
Control unit, if be more than or equal to for the signal to noise ratio that the processing unit detects the terminal camera default
Threshold value, then control the terminal camera to take pictures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233358.2A CN107040696A (en) | 2017-04-11 | 2017-04-11 | A kind of noise-eliminating method and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233358.2A CN107040696A (en) | 2017-04-11 | 2017-04-11 | A kind of noise-eliminating method and terminal |
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| Publication Number | Publication Date |
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| CN107040696A true CN107040696A (en) | 2017-08-11 |
Family
ID=59534969
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| CN201710233358.2A Withdrawn CN107040696A (en) | 2017-04-11 | 2017-04-11 | A kind of noise-eliminating method and terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109587393A (en) * | 2018-10-23 | 2019-04-05 | 惠州Tcl移动通信有限公司 | Improve method, terminal device and the storage device of camera image-capturing resolution |
| CN110519516A (en) * | 2019-08-30 | 2019-11-29 | 联想(北京)有限公司 | A kind of processing method of image noise, device and electronic equipment |
-
2017
- 2017-04-11 CN CN201710233358.2A patent/CN107040696A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109587393A (en) * | 2018-10-23 | 2019-04-05 | 惠州Tcl移动通信有限公司 | Improve method, terminal device and the storage device of camera image-capturing resolution |
| CN109587393B (en) * | 2018-10-23 | 2021-04-27 | 惠州Tcl移动通信有限公司 | Method for improving shooting definition of camera, terminal equipment and storage medium |
| CN110519516A (en) * | 2019-08-30 | 2019-11-29 | 联想(北京)有限公司 | A kind of processing method of image noise, device and electronic equipment |
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Application publication date: 20170811 |