CN104902179B - The method for previewing and device of a kind of camera image - Google Patents
The method for previewing and device of a kind of camera image Download PDFInfo
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- CN104902179B CN104902179B CN201510279037.7A CN201510279037A CN104902179B CN 104902179 B CN104902179 B CN 104902179B CN 201510279037 A CN201510279037 A CN 201510279037A CN 104902179 B CN104902179 B CN 104902179B
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Abstract
The invention provides a kind of method for previewing of camera image, including：Detect whether to receive the focusing instruction for camera image；When receiving the focusing instruction for camera image, the first two field picture for receiving and being gathered during focusing instruction is obtained；Within the time set in advance after receiving the focusing instruction, the first two field picture of the collection is shown；It is described receive it is described focusing instruction after time set in advance after, display complete automatic exposure adjustment and to defocused two field picture.When the present invention is applied to camera image preview, it can avoid due to the defects of caused image is not known when camera automatic exposure adjusts, so as to improve the convenience that user takes pictures.
Description
Technical field
The invention belongs to the method for previewing and device of field of photography, more particularly to a kind of camera image.
Background technology
With the rise of mobile intelligent terminal, on the basis of traditional communication function, smart mobile phone provides more and more richer
Rich function, such as online obtain data, shooting photo or video, play video or music etc., are brought for people's life
Greatly facilitate.
When being taken pictures using smart mobile phone, lead to by camera collection image signal, and by the picture signal of collection
Cross screen to be shown, user can be by showing that display screen views the picture of the scenery currently gathered, and according to display is schemed
Picture, user can be with rotary camera, or adjustment focal length, the convenient scenes for adjusting camera and being taken.
When user toggles in different scenes, due to camera automatic exposure value corresponding to different scene images with
And focus point also differs, when being focused, due to needing that automatic exposure value is adjusted, thus shown in display screen
Picture easily there is the image of fuzzy pictures, it is impossible to obtain clearly image preview effect, be not easy to user and taken pictures
Operation.
The content of the invention
It is an object of the invention to provide a kind of method for previewing of camera image, is being focused with solving prior art
When, due to needing that automatic exposure value is adjusted, thus easily there is the figure of fuzzy pictures in the picture shown in display screen
Picture, it is impossible to obtain clearly image preview effect, be not easy to the problem of user carries out photographing operation.
In a first aspect, the embodiments of the invention provide a kind of method for previewing of camera image, methods described includes：
Detect whether to receive the focusing instruction for camera image；
When receiving the focusing instruction for camera image, the first frame figure for receiving and being gathered during focusing instruction is obtained
Picture；
Within the time set in advance after receiving the focusing instruction, the first two field picture of the collection is shown；
It is described receive it is described focusing instruction after time set in advance after, display complete automatic exposure adjustment and it is right
Defocused two field picture.
With reference in a first aspect, in the first possible implementation of first aspect, the focusing is being received described
In time set in advance after instruction, show in the first two field picture step of the collection, the default time is camera
Time according to required for receiving and carry out automatic exposure adjustment and focusing during focusing instruction.
With reference in a first aspect, in second of possible implementation of first aspect, the focusing is being received described
In time set in advance after instruction, before showing the first two field picture step of the collection, methods described also includes：
Obtain the species of the auto exposure mode of the camera；
According to the species of the auto exposure mode, the time set in advance is determined accordingly.
With reference to second of possible implementation of first aspect, in the third possible implementation of first aspect, institute
Stating auto exposure mode includes aperture priority automatic exposure, ShutterPriority Auto automatic exposure, shrinks aperture automatic exposure.
With reference in a first aspect, in the 4th kind of possible implementation of first aspect, it is described detect whether to receive be used for
In the focusing instruction step of camera image, the focusing instruction of the camera image is the focusing instruction of user's input, or is phase
Machine is when scene switches, when the time value that the camera gathers same image is more than the scheduled time, transmitted focusing instruction.
Second aspect, the embodiments of the invention provide a kind of pre-viewing device of camera image, described device includes：
Instruction detection unit, for detecting whether receiving the focusing instruction for camera image；
Two field picture acquiring unit, for when receiving the focusing instruction for camera image, obtaining and receiving focusing instruction
When the first two field picture for being gathered；
First display unit, in the time set in advance after the focusing instruction is received, being adopted described in display
First two field picture of collection；
Second display unit, for it is described receive it is described focusing instruction after time set in advance after, shown
Adjusted into automatic exposure and to defocused two field picture.
With reference to second aspect, in the first possible implementation of second aspect, in first display unit, institute
State time of the default time for camera according to required for receiving and carry out automatic exposure adjustment and focusing during focusing instruction.
With reference to second aspect, in second of possible implementation of second aspect, described device also includes：
Exposure mode acquiring unit, the species of the auto exposure mode for obtaining the camera；
Time scheduled unit, for the species according to the auto exposure mode, determine accordingly described set in advance
Time.
With reference to second of possible implementation of second aspect, in the third possible implementation of second aspect, institute
Stating auto exposure mode includes aperture priority automatic exposure, ShutterPriority Auto automatic exposure, shrinks aperture automatic exposure.
With reference to second aspect, in the 4th kind of possible implementation of second aspect, in the detection unit, the camera
The focusing instruction of image is the focusing instruction of user's input, or is camera when scene switch, the same figure of camera collection
When the time value of picture is more than the scheduled time, transmitted focusing instruction.
In the present invention, by detecting whether camera receives focusing instruction, when detecting image focusing instruction, obtain
The first two field picture gathered during focusing instruction is received, and within the time set in advance after receiving focusing instruction described in display
First two field picture of collection, after the time set in advance, display completes automatic exposure adjustment and to defocused two field picture,
So that the present invention when being applied to camera image preview, can be avoided because caused image is not when camera automatic exposure adjusts
The defects of understanding, so as to improve the convenience that user takes pictures.
Brief description of the drawings
Fig. 1 is the implementation process figure of the method for previewing for the camera image that first embodiment of the invention provides；
Fig. 2 is the implementation process figure of the method for previewing for the camera image that second embodiment of the invention provides；
Fig. 3 is the structural representation of the pre-viewing device for the camera image that third embodiment of the invention provides.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The main purpose of the embodiment of the present invention is to provide a kind of side that can provide clearly image preview when taking pictures
Method, when being focused in the prior art due to taking pictures with solution, when camera carries out automatic exposure adjustment, image is caused to obscure, preview
Image show it is unclear, so as to be not easy to user carry out photographing operation the problem of.For example move camera in user and carry out making scape
When, because magazine scenery is constantly changing, if the exposure value of scenery requirement is different, need to adjust by automatic exposure
It is whole, appropriate exposure value is selected to object scene, so as to obtain better image.But this adjustment process, camera can be caused
Fuzzy image is produced during preview, is not easy to the picture material that user timely understands camera collection.
To overcome above mentioned problem, the method for previewing of camera image of the present invention, including：Detect whether to receive for phase
The focusing instruction of machine image；When receiving the focusing instruction for camera image, obtain and receive what is gathered during focusing instruction
First two field picture；Within the time set in advance after receiving the focusing instruction, the first two field picture of the collection is shown；
It is described receive it is described focusing instruction after time set in advance after, display complete automatic exposure adjustment and to defocused frame
Image.
The present invention, when detecting image focusing instruction, is obtained and received by detecting whether camera receives focusing instruction
The first two field picture gathered during focusing instruction, and show the collection within the time set in advance after receiving focusing instruction
The first two field picture, after the time set in advance, display completes automatic exposure adjustment and to defocused two field picture, so as to
During so that the present invention being applied to camera image preview, it can avoid because caused image is unclear when camera automatic exposure adjusts
The defects of, so as to improve the convenience that user takes pictures.Specifically illustrate below in conjunction with the accompanying drawings.
Embodiment one：
Fig. 1 shows the implementation process of the method for previewing for the camera image that first embodiment of the invention provides, and details are as follows：
In step S101, detect whether to receive the focusing instruction for camera image.
Specifically, the camera image, refer to the optical signal gathered by camera lens, by image collecting device, than
Such as cmos sensor, the optical signal of collection is converted into corresponding electric signal, the image shown by the display of camera.
In general, when being taken pictures using camera, in order to understand corresponding image effect when Current camera is taken pictures in real time, and
In order that seeing continuous transition effect in display screen with user, the picking rate of described image is generally higher than user's human eye point
24 frames distinguished are per second.
The focusing instruction, refers to the instruction for being adjusted to the position that camera is focused, when the focal length of camera
During adjustment, camera image can also adjust accordingly, i.e., with the change of focal length, the definition changed accordingly in image is higher
Position where point.For example image includes remote, closely three objects with middle distance, when Focussing is remote
When, then obtain remote object the most clearly image, meanwhile, when Focussing for closely when, then obtain closely
Object the most clearly image.
The focusing instruction for camera image is received described in the embodiment of the present invention, can be that the focusing of user's input refers to
Order, or be camera when scene switch, it is transmitted when the time value of the same image of camera collection is more than the scheduled time
Focusing instruction.
Wherein, the instruction of user's input, can be the fingertip order that user inputs in display screen under the state of taking pictures,
Image corresponding to the position of i.e. described touching instruction, the as object away from Jiao, focal length can be adjusted accordingly according to the object.
The focusing instruction that the camera is sent, it is according to advance setting means, when picture stops in camera, judges to stop
The duration stayed, if the duration stopped is more than the predetermined time, for example during more than 2 seconds, then sends focusing automatically by camera and instruct.
The position of the focusing can according to requirement set in advance, such as can centered on object, or choose image in it is main
Object is focused etc..
In addition to this it is possible to be instructed according to the focusing for needing to receive other forms of practical application, the camera is adopted
The image of collection is focused.
Present invention is especially applicable to when scene switches, the preview to camera image is shown.
In step s 102, when receiving the focusing instruction for camera image, obtain and adopted when receiving focusing instruction
First two field picture of collection.
In embodiments of the present invention, if be not received by focusing instruction, camera real-time image acquisition, and in display screen
Middle display acquired image.Thus the image of collection and the picture of display are real-time updates.
When receiving focusing instruction, the embodiment of the present invention passes through the interception to picture, when obtaining receiving focusing instruction, phase
First two field picture of machine collection.
In step s 103, within the time set in advance after receiving the focusing instruction, the collection is shown
First two field picture.
After the focusing instruction is received, in the range of the scheduled time after receiving focusing instruction, what display was gathered
First two field picture, i.e., when receiving focusing instruction, the first two field picture of camera collection.
Because camera is when receiving focusing instruction, camera is typically in inactive state, and focusing instruction is sent because working as
When, it is to obtain the picture rich in detail of the target location of current picture.
But in the prior art, after focusing instruction is received, in order to obtain better image quality, system is general
Automatic exposure adjustment will be carried out, by calculating the white balance of present image, accordingly using different automatic exposure
Adjustment modes, carry out automatic exposure adjustment.And during automatic exposure adjustment, obtained image can also become mould accordingly
Paste, so as to influence the use of user.
And the present invention by prestoring focusing instruction when corresponding picture frame, and show and deposited in the predetermined duration
The picture frame of storage, so as to provide clearly image preview effect always for user.
In step S104, it is described receive it is described focusing instruction after time set in advance after, display complete from
Dynamic exposure adjusts and to defocused two field picture.
Complete automatic exposure adjustment and to defocused, you can display completes automatic exposure adjustment and to defocused two field picture,
So that showing clearly image always in whole process, be advantageous to user and easily obtain clearly picture preview effect
Fruit, improve the convenience of user's operation.
Embodiment two：
Fig. 2 shows the implementation process of the method for previewing for the camera image that second embodiment of the invention provides, and details are as follows：
In step s 201, detect whether to receive the focusing instruction for camera image.
In step S202, when receiving the focusing instruction for camera image, obtain and adopted when receiving focusing instruction
First two field picture of collection.
In step S203, within the time set in advance after receiving the focusing instruction, the collection is shown
First two field picture, the default time are camera according to required for carrying out automatic exposure adjustment and focusing when receiving focusing instruction
Time.
Specifically, the embodiment of the present invention has carried out specific restriction to the default time, it include automatic exposure adjustment and
Time required for focusing.
At the time required for calculating the automatic exposure adjustment, may include steps of：
1st, the species of the auto exposure mode of the camera is obtained；
2nd, according to the species of the auto exposure mode, the time set in advance is determined accordingly.
Due to the difference of auto exposure mode species, the time that may be spent in automatic exposure also differs, and therefore, is
The further present invention that improves is when carrying out image display, the time value of display first two field picture.
Wherein, the species of the auto exposure mode of the camera, aperture priority automatic exposure, ShutterPriority Auto can be included certainly
Dynamic exposure, shrink aperture automatic exposure etc..
Wherein, the automatic exposure of aperture priority formula is also known as aperture-priority mode exposure, is typically represented on digital camera with " A ",
Photographer selects suitable aperture, the digital suitable shutter speed of phase Auto-matching, to realize accurately exposure.Aperture-priority mode
Effect mainly have two aspect：
It is possible, firstly, to control shutter speed by aperture, in the case of same illumination, aperture is bigger, the unit interval
Interior more by the light of camera lens, so the shutter speed that digital camera coordinates automatically is also faster, and vice versa.Profit
, can only be dominated by hand when shooting environmental light is poor, and without the equipment of tripod or other stabilized cameras with this characteristic
When camera, it is possible to try to amplify aperture, to obtain than faster shutter speed, so as to prevent because the shake of hand makes photograph
The fuzzy situation of piece occurs.When floor light is too strong, the shutter speed coordinated needed for large aperture is possible to surpass
Go out the highest shutter speed limitation of digital camera, at this time can tries to turn what aperture coordinated automatically to reduce digital camera down
Shutter speed.
Secondly, under diaphragm priority mode, the depth of field can also be controlled by aperture.All scenery in one photo are simultaneously
It is not that most clearly will can reach the purpose of stressing main by obscuring some secondary scenery sometimes.Light
Enclose is with the relation of the depth of field：Aperture is bigger, and the depth of field is more shallow, i.e., clearly scope is smaller in picture；Aperture is smaller, and the depth of field is deeper,
Definition range namely in picture is bigger.
And ShutterPriority Auto formula automatic exposure is also known as shutter priority formula, typically represented on digital camera with S.Photographer selects
Suitable shutter speed, the digital suitable aperture size of phase Auto-matching, to realize accurately exposure.
This screening-mode is especially suitable for shooting the theme photo relevant with speed and motion, as stream past in an endless flow wagon flow,
The brook slowly trickled and the sportsman rapidly run etc., and same theme coordinates different light with different shutter speeds
It is also what is differed to enclose the effect being worth to.For example it is both a river, if it is desired to show the spray that it splashes, it is possible to will
Shutter speed is set must be than very fast, such as 1/250s；If expect that silky effect without stop such as will be used than relatively low
Shutter speed.
In step S204, it is described receive it is described focusing instruction after time set in advance after, display complete from
Dynamic exposure adjusts and to defocused two field picture.
Adjusted and to defocused when completing automatic exposure within the time set in advance, the image now gathered is certainly
It is dynamic to expose and to defocused image, focusing clearly image be obtained, so as to the clearly image that will be gathered this when
Shown by display screen.
The embodiment of the present invention in place of the difference of embodiment one with being, the embodiment of the present invention is by specifically calculating automatic exposure
Light adjustment time and focusing time, first two field picture is shown so as to more further improve, improves the essence of display
Degree.
Embodiment three：
Fig. 3 shows the structural representation of the pre-viewing device for the camera image that third embodiment of the invention provides, and is described in detail such as
Under：
The pre-viewing device of camera image described in the embodiment of the present invention, including：
Instruction detection unit, for detecting whether receiving the focusing instruction for camera image；
Two field picture acquiring unit, for when receiving the focusing instruction for camera image, obtaining and receiving focusing instruction
When the first two field picture for being gathered；
First display unit, in the time set in advance after the focusing instruction is received, being adopted described in display
First two field picture of collection；
Second display unit, for it is described receive it is described focusing instruction after time set in advance after, shown
Adjusted into automatic exposure and to defocused two field picture.
Preferably, in first display unit, the default time is that camera enters according to when receiving focusing instruction
The time that row automatic exposure adjusts and focusing is required.
Preferably, described device also includes：
Exposure mode acquiring unit, the species of the auto exposure mode for obtaining the camera；
Time scheduled unit, for the species according to the auto exposure mode, determine accordingly described set in advance
Time.
Preferably, the auto exposure mode includes aperture priority automatic exposure, ShutterPriority Auto automatic exposure, shrinks aperture
Automatic exposure.
Preferably, in the detection unit, the focusing instruction of the camera image instructs for the focusing of user's input, or
It is camera when scene switches, when the time value that the camera gathers same image is more than the scheduled time, transmitted focusing refers to
Order.
The pre-viewing device of camera image described in the embodiment of the present invention and the preview side of one and two camera image of embodiment
Method is corresponding, is not repeated repeats herein.
In several embodiments provided by the present invention, it should be understood that disclosed apparatus and method, it can be passed through
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, there can be 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.It is another, it is shown or discussed
Mutual coupling or direct-coupling or communication connection can be the INDIRECT COUPLINGs or logical by some interfaces, device or unit
Letter connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show 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 the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the present invention
Portion or part.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory),
Random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with store program codes
Medium.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (6)
1. a kind of method for previewing of camera image, it is characterised in that methods described includes：
Detect whether to receive the focusing instruction for camera image；
When receiving the focusing instruction for camera image, the first two field picture for receiving and being gathered during focusing instruction is obtained；
Within the time set in advance after receiving the focusing instruction, the first two field picture of the collection is shown；
Within the time set in advance after receiving the focusing instruction, the first two field picture step of the collection is shown
Before rapid, in addition to：
Obtain the species of the auto exposure mode of the camera；
According to the species of the auto exposure mode, the time set in advance is determined accordingly；
It is described receive it is described focusing instruction after time set in advance after, display complete automatic exposure adjustment and to defocused
Two field picture；
If be not received by focusing instruction, camera real-time image acquisition, and acquired image is shown in display screen.
2. method according to claim 1, it is characterised in that the auto exposure mode include aperture priority automatic exposure,
ShutterPriority Auto automatic exposure, shrink aperture automatic exposure.
3. method according to claim 1, it is characterised in that it is described detect whether to receive refer to for the focusing of camera image
Make in step, the camera image focusing instruction for user input focusing instruction, or for camera when scene switches, institute
When stating camera and gathering the time value of same image and be more than the scheduled time, transmitted focusing instructs.
4. a kind of pre-viewing device of camera image, it is characterised in that described device includes：
Instruction detection unit, for detecting whether receiving the focusing instruction for camera image；
Two field picture acquiring unit, for when receiving the focusing instruction for camera image, obtaining and receiving focusing instruction when institute
First two field picture of collection；
First display unit, in the time set in advance after the focusing instruction is received, showing the collection
First two field picture；
Second display unit, for it is described receive it is described focusing instruction after time set in advance after, display complete from
Dynamic exposure adjusts and to defocused two field picture；
Exposure mode acquiring unit, the species of the auto exposure mode for obtaining the camera；
Time scheduled unit, for the species according to the auto exposure mode, the time set in advance is determined accordingly；
If be not received by focusing instruction, camera real-time image acquisition, and acquired image is shown in display screen.
5. device according to claim 4, it is characterised in that the auto exposure mode include aperture priority automatic exposure,
ShutterPriority Auto automatic exposure, shrink aperture automatic exposure.
6. device according to claim 4, it is characterised in that in the detection unit, the focusing instruction of the camera image
For the focusing instruction of user's input, or it is camera when scene switch, the time value of the same image of camera collection is more than
During the scheduled time, transmitted focusing instruction.
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| CN107517305B (en) * | 2017-07-10 | 2019-08-30 | Oppo广东移动通信有限公司 | Mobile terminal and its method of adjustment, filming control method and device |
| CN107343144A (en) * | 2017-07-10 | 2017-11-10 | 广东欧珀移动通信有限公司 | Dual camera switching handling method, device and its equipment |
| CN108184065B (en) * | 2018-01-04 | 2019-11-05 | 武汉斗鱼网络科技有限公司 | Preview frame screen generating method, device and mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333702A (en) * | 2014-11-28 | 2015-02-04 | 广东欧珀移动通信有限公司 | Method, device and terminal for automatic focusing |
| CN104333701A (en) * | 2014-11-28 | 2015-02-04 | 广东欧珀移动通信有限公司 | Method and device for displaying camera preview pictures as well as terminal |
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| CN101094329B (en) * | 2006-06-20 | 2011-05-18 | 松下电器产业株式会社 | Digital camera |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333702A (en) * | 2014-11-28 | 2015-02-04 | 广东欧珀移动通信有限公司 | Method, device and terminal for automatic focusing |
| CN104333701A (en) * | 2014-11-28 | 2015-02-04 | 广东欧珀移动通信有限公司 | Method and device for displaying camera preview pictures as well as terminal |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., Ltd. Address before: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., Ltd. |