CN109510939A - ROI method of adjustment, device and the storage medium of camera scaling focusing - Google Patents
ROI method of adjustment, device and the storage medium of camera scaling focusing Download PDFInfo
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- CN109510939A CN109510939A CN201710844415.0A CN201710844415A CN109510939A CN 109510939 A CN109510939 A CN 109510939A CN 201710844415 A CN201710844415 A CN 201710844415A CN 109510939 A CN109510939 A CN 109510939A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
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Abstract
The invention discloses ROI method of adjustment, device and the storage medium of a kind of scaling focusing of camera, method include: detect camera take pictures picture zoom operations when, obtain the zoom degree parameter to the picture of taking pictures；When zoom degree parameter reaches preset threshold, dynamic regulation is carried out to focusing ROI window according to zoom degree parameter.The present invention solve the problems, such as zoom area with focusing ROI region it is inconsistent caused by focus it is fuzzy, improve camera scaling focusing accuracy rate.Further, the luminance information of picture after scaling can also be obtained；Dynamic regulation is carried out to focusing ROI window according to the luminance information of picture after the scaling, further increases the scaling focus effects of camera, improves the zoom focusing experience of user.
Description
Technical field
The present invention relates to field of photographing technology more particularly to a kind of ROI method of adjustment of camera scaling focusing, device and deposit
Storage media.
Background technique
In mobile phone camera, zoom (scaling) mode has become an indispensable function in mainstream mobile phone.But
Scaling focusing is influenced due to being easy by hand shaking and noise, and the requirement to focusing is relatively high.
Currently, in phase focusing technology (pdaf, Phase Detection Auto Focus), zoom ROI (zoom
Region Of Interest scales area-of-interest) it is general by the way of fixed focusing, area-of-interest is kept and scaling
It is preceding consistent, do not change with scaling.But when user zooms in and out operation, since screen size changes, if using fixing
Pair it focuses area-of-interest, it is inconsistent with focusing area to be easy to appear user's area-of-interest, causes area-of-interest out of focus, i.e.,
Coke is fuzzy.
Summary of the invention
The main purpose of the present invention is to provide a kind of cameras to scale ROI method of adjustment, device and the storage medium focused,
It aims to solve the problem that and focuses fuzzy problem caused by zoom area and focusing ROI region are inconsistent, the scaling focusing for improving camera is quasi-
True rate.
To achieve the above object, the ROI method of adjustment of a kind of camera scaling focusing provided by the invention, comprising:
Detect camera take pictures picture zoom operations when, obtain and the zoom degree of the picture of taking pictures joined
Number；
When the zoom degree parameter reaches preset threshold, according to the zoom degree parameter to focusing ROI window into
Mobile state is adjusted.
Optionally, it is described detect camera take pictures picture zoom operations when, obtain to the picture of taking pictures
In the step of zoom degree parameter further include:
Obtain the luminance information of picture after scaling；
The method also includes:
Dynamic regulation is carried out to the focusing ROI window according to the luminance information of picture after the scaling.
Optionally, the luminance information according to picture after the scaling carries out dynamic regulation to the focusing ROI window
The step of include:
Preset adjustment table is searched according to the luminance information of picture after the scaling, is obtained corresponding with the luminance information
Focusing ROI window adjustment parameter；
The focusing ROI window is adjusted according to the focusing ROI window adjustment parameter found.
Optionally, the method also includes:
Focusing ROI information after adjusting is issued to preset phase focus algorithm, carries out corresponding phase focus operation.
Optionally, detect camera take pictures picture zoom operations before, the method also includes:
The adjustment table of mapping relations between setting screen luminance information and focusing ROI window adjustment parameter.
The embodiment of the present invention also proposes a kind of ROI adjustment device of camera scaling focusing, comprising:
Obtain module, for detect camera take pictures picture zoom operations when, obtain to the picture of taking pictures
Zoom degree parameter；
Adjustment module, for when the zoom degree parameter reaches preset threshold, according to the zoom degree parameter pair
ROI window of focusing carries out dynamic regulation.
Optionally, the acquisition module is also used to obtain the luminance information of picture after scaling；
The adjustment module is also used to carry out the focusing ROI window according to the luminance information of picture after the scaling
Dynamic regulation.
The embodiment of the present invention also proposes a kind of ROI adjustment device of camera scaling focusing, comprising: memory, processor and
It is stored in the computer program that can be run on the memory and on the processor, the computer program is by the processing
Following operation is realized when device executes:
Detect camera take pictures picture zoom operations when, obtain and the zoom degree of the picture of taking pictures joined
Number；
When the zoom degree parameter reaches preset threshold, according to the zoom degree parameter to focusing ROI window into
Mobile state is adjusted.
Optionally, following operation is also realized when the computer program is executed by the processor:
Obtain the luminance information of picture after scaling；
Dynamic regulation is carried out to the focusing ROI window according to the luminance information of picture after the scaling.
The embodiment of the present invention also proposes a kind of computer readable storage medium, stores on the computer readable storage medium
There is computer program, following operation realized when the computer program is executed by processor:
Detect camera take pictures picture zoom operations when, obtain and the zoom degree of the picture of taking pictures joined
Number；
When the zoom degree parameter reaches preset threshold, according to the zoom degree parameter to focusing ROI window into
Mobile state is adjusted.
ROI method of adjustment, device and the storage medium for a kind of camera scaling focusing that the embodiment of the present invention proposes, are being detected
Take pictures to camera picture zoom operations when, obtain the zoom degree parameter to the picture of taking pictures；In the scaling journey
When degree parameter reaches preset threshold, dynamic regulation is carried out to focusing ROI window according to the zoom degree parameter, to solve to contract
Put region and focusing ROI region it is inconsistent caused by focus fuzzy problem, improve the scaling focusing accuracy rate of camera.Into one
Step ground, can also obtain the luminance information of picture after scaling；According to the luminance information of picture after the scaling to the focusing ROI
Window carries out dynamic regulation, further increases the scaling focus effects of camera, improves the zoom focusing experience of user.
Detailed description of the invention
Fig. 1 is the flow diagram of the ROI method of adjustment first embodiment of camera scaling focusing of the present invention；
Fig. 2 is the ROI region schematic diagram that user zooms in and out focus operation in the embodiment of the present invention；
Fig. 3 is the flow diagram of the ROI method of adjustment second embodiment of camera scaling focusing of the present invention；
Fig. 4 is the flow diagram of the ROI method of adjustment 3rd embodiment of camera scaling focusing of the present invention；
Fig. 5 is the mobile terminal structure schematic diagram that the embodiment of the present invention is related to.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
In order to keep technical solution of the present invention clearer, clear, it is described in further detail below in conjunction with attached drawing.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The primary solutions of the embodiment of the present invention are: detect camera take pictures picture zoom operations when, obtain
Take the zoom degree parameter to the picture of taking pictures；When the zoom degree parameter reaches preset threshold, according to the scaling
Extent index to focusing ROI window carry out dynamic regulation, thus solve zoom area with focus ROI region it is inconsistent caused by it is right
The fuzzy problem of coke improves the scaling focusing accuracy rate of camera.Further, the brightness letter of picture after scaling can also be obtained
Breath；Dynamic regulation is carried out to the focusing ROI window according to the luminance information of picture after the scaling, further increases phase
The scaling focus effects of machine improve the zoom focusing experience of user.
Due in the prior art, it is general using fixed focus by the way of, still, when user zooms in and out operation, due to
Screen size variation causes if it is inconsistent with focusing area to be easy to appear user's area-of-interest using fixed focusing ROI
Area-of-interest is out of focus, i.e. focusing is fuzzy.
For solve the region zoom and focusing ROI region it is inconsistent caused by focus fuzzy problem, the embodiment of the present invention,
Focusing area-of-interest (ROI) is adjusted for the zoom degree (ratio) of user, to improve the zoom focusing of user
Experience.Wherein, zoom ratio (zoom degree) is mainly passed to by sensor driving, dynamic regulation zoom by VFE module
The focusing ROI Window to take pictures, and further determine whether to continue to adjust ROI according to the picture brightness after zoom, to obtain
Obtain better zoom mode focusing experience.
The present embodiments relate to term include:
ROI (Region Of Interest, area-of-interest), refers in image procossing (compression of images, rotation, change
Change etc.), to the abbreviation of certain specific regions (being determined according to specific rule or method), exactly in the image for wanting to be processed
The region to be processed extracted.For example, having greenery and flower in a width picture, greenery are done with special processing (rotation
Deng), and these greenery, it is known as ROI.
Pdaf (Phase Detection Auto Focus), phase focusing；
Zoom, scaling.
Specifically, as shown in Figure 1, first embodiment of the invention proposes a kind of ROI method of adjustment of camera scaling focusing, packet
It includes:
Step S101, detect camera take pictures picture zoom operations when, obtain the contracting to the picture of taking pictures
Put extent index；
It takes the mobile phone as an example, when user is taken pictures by mobile phone camera, if user carries out zoom operations taking pictures on picture, with
It focuses user's area-of-interest (ROI), as shown in Fig. 2, at this point, mobile phone camera system obtains when user zooms in and out operation to bat
According to the zoom degree parameter (zoom ratio) of picture, so as to according to the zoom degree parameter for picture of taking pictures to focusing ROI window
Carry out dynamic regulation.
Wherein, zoom degree parameter (zoom ratio) is such as from 1.0- > 8.0.
Step S102, when the zoom degree parameter reaches preset threshold, according to the zoom degree parameter to focusing
ROI window carries out dynamic regulation.
In the present embodiment, there is a threshold value to zoom degree parameter setting, if current zoom degree is less than threshold value,
Be not required to adjustment focusing ROI window, if it is greater than or be equal to the threshold value, then according to take pictures picture zoom degree parameter to focusing
ROI window carries out dynamic regulation.
It is implemented as follows:
For example, focusing window is in the 1/4*1/4 at whole frame data center in this example, as zoom ratio < 4, focus ROI
Window remains unchanged.
As zoom ratio > 4, dynamic regulation is carried out to focusing ROI window:
ROI_width*=(1- (ratio-4)/8)；
ROI_height*=(1- (ratio-4)/8).
Wherein, ROI_width* is focusing ROI window adjustment width, and ROI_height* is that focusing ROI window adjusting is high
Degree.
The present embodiment through the above scheme, detect camera take pictures picture zoom operations when, obtain to described
It takes pictures the zoom degree parameter of picture；When the zoom degree parameter reaches preset threshold, according to the zoom degree parameter
To focusing, ROI window carries out dynamic regulation, to solve what zoom area was obscured with ROI region of focusing focusing caused by inconsistent
Problem improves the scaling focusing accuracy rate of camera, improves the zoom focusing experience of user.
As shown in figure 3, second embodiment of the invention proposes a kind of ROI method of adjustment of camera scaling focusing, based on above-mentioned
First embodiment shown in FIG. 1, in the second embodiment, above-mentioned steps S101 replacement are as follows:
Step S1011, detect camera take pictures picture zoom operations when, obtain the contracting to the picture of taking pictures
Extent index is put, and obtains the luminance information of picture after scaling；
In above-mentioned steps S102: when the zoom degree parameter reaches preset threshold, according to the zoom degree parameter
After focusing ROI window progress dynamic regulation, further includes:
Step S103 carries out dynamic regulation to the focusing ROI window according to the luminance information of picture after the scaling.
Compared to above-described embodiment, this embodiment scheme can be combined with the luminance information of picture after scaling to the focusing
ROI window carries out dynamic regulation.
Specifically, detect camera take pictures picture zoom operations when, obtain the scaling to the picture of taking pictures
Extent index, while obtaining the luminance information of picture after scaling；According to the luminance information of picture after the scaling to the focusing
ROI window carries out dynamic regulation.
Wherein, the present embodiment is preset with mapping relations between picture brightness information and focusing ROI window adjustment parameter
Adjustment table.
When the luminance information of picture after according to the scaling carries out dynamic regulation to the focusing ROI window, firstly, root
Preset adjustment table is searched according to the luminance information of picture after the scaling, obtains focusing ROI window corresponding with the luminance information
Mouth adjustment parameter；Then, the focusing ROI window is adjusted according to the focusing ROI window adjustment parameter found.
It is exemplified below:
Current picture brightness value (exp_index) after obtaining zoom, and set exp_index and brightness adjustment rate
(adjust_ratio) look-up table, as shown in the table:
| exp_index | adjust_ratio |
| <290 | 1 |
| 350 | 1.2 |
| 400 | 1.5 |
| >400 | 1.5 |
Search above-mentioned preset adjustment table according to the luminance information (exp_index) of picture after scaling, obtain with it is described bright
Spend the corresponding focusing ROI window adjustment parameter (adjust_ratio) of information；Then, according to the focusing ROI window tune found
The focusing ROI window is adjusted in section parameter.
Linear difference processing is carried out when current picture brightness is between two exp_index.
ROI_width*=adjust_ratio；
ROI_height*=adjust_ratio.
The present embodiment through the above scheme, detect camera take pictures picture zoom operations when, obtain to described
It takes pictures the zoom degree parameter of picture；When the zoom degree parameter reaches preset threshold, according to the zoom degree parameter
To focusing, ROI window carries out dynamic regulation, to solve what zoom area was obscured with ROI region of focusing focusing caused by inconsistent
Problem improves the scaling focusing accuracy rate of camera.Further, the luminance information of picture after scaling can also be obtained；According to
The luminance information of picture carries out dynamic regulation to the focusing ROI window after the scaling, further increases the contracting of camera
Focus effects are put, the zoom focusing experience of user is improved.
As shown in figure 4, third embodiment of the invention proposes a kind of ROI method of adjustment of camera scaling focusing, based on above-mentioned
Second embodiment shown in Fig. 3, in above-mentioned steps S103: according to the luminance information of picture after the scaling to the focusing ROI
Window carries out after dynamic regulation, further includes:
Focusing ROI information after adjusting is issued to preset phase focus algorithm, carries out corresponding phase by step S104
Focus operation.
Specifically, after obtaining focusing ROI information, gained ROI information is sent to phase focus algorithm, present frame is calculated
Phase is to coke number, to carry out corresponding phase focus operation.Terminate present frame, next frame is waited to calculate.
The present embodiment through the above scheme, detect camera take pictures picture zoom operations when, obtain to described
It takes pictures the zoom degree parameter of picture；When the zoom degree parameter reaches preset threshold, according to the zoom degree parameter
To focusing, ROI window carries out dynamic regulation, to solve what zoom area was obscured with ROI region of focusing focusing caused by inconsistent
Problem improves the scaling focusing accuracy rate of camera.Further, the luminance information of picture after scaling can also be obtained；According to
The luminance information of picture carries out dynamic regulation to the focusing ROI window after the scaling, further increases the contracting of camera
Focus effects are put, the zoom focusing experience of user is improved.
Accordingly, propose that a kind of ROI of camera scaling focusing of the present invention adjusts Installation practice, which includes:
Obtain module, for detect camera take pictures picture zoom operations when, obtain to the picture of taking pictures
Zoom degree parameter；
Adjustment module, for when the zoom degree parameter reaches preset threshold, according to the zoom degree parameter pair
ROI window of focusing carries out dynamic regulation.
Further, the acquisition module is also used to obtain the luminance information of picture after scaling；
The adjustment module is also used to carry out the focusing ROI window according to the luminance information of picture after the scaling
Dynamic regulation.
The present embodiment realizes that the ROI of camera scaling focusing adjusts principle, please refers to the various embodiments described above, no longer superfluous herein
It states.
The embodiment of the present invention also proposes a kind of ROI adjustment device of camera scaling focusing, comprising: memory, processor and
It is stored in the computer program that can be run on the memory and on the processor, the computer program is by the processing
Following operation is realized when device executes:
Detect camera take pictures picture zoom operations when, obtain and the zoom degree of the picture of taking pictures joined
Number；
When the zoom degree parameter reaches preset threshold, according to the zoom degree parameter to focusing ROI window into
Mobile state is adjusted.
Specifically, as shown in figure 5, mobile terminal where the ROI adjustment device of the present embodiment camera scaling focusing can wrap
It includes: processor 1001, such as CPU, network interface 1004, user interface 1003, memory 1005, communication bus 1002.Wherein,
Communication bus 1002 is for realizing the connection communication between these components.User interface 1003 may include display screen
(Display), input unit such as keyboard (Keyboard), optional user interface 1003 can also include that the wired of standard connects
Mouth, wireless interface.Network interface 1004 optionally may include standard wireline interface and wireless interface (such as WI-FI interface).It deposits
Reservoir 1005 can be high speed RAM memory, be also possible to stable memory (non-volatile memory), such as magnetic
Disk storage.Memory 1005 optionally can also be the storage device independently of aforementioned processor 1001.
It will be understood by those skilled in the art that mobile terminal structure shown in Fig. 5 does not constitute the limit to mobile terminal
It is fixed, it may include perhaps combining certain components or different component layouts than illustrating more or fewer components.
As shown in figure 5, as may include that operating system, network are logical in a kind of memory 1005 of computer storage medium
Believe the ROI adjustment programme of module, Subscriber Interface Module SIM and camera scaling focusing.
In mobile terminal shown in Fig. 5, network interface 1004 is mainly used for connecting network server, with network server
Carry out data communication；User interface 1003 is mainly used for connecting client (user terminal), carries out data communication with client；And locate
Reason device 1001 can be used for calling the ROI adjustment programme of the camera stored in memory 1005 scaling focusing, and execute following behaviour
Make:
Detect camera take pictures picture zoom operations when, obtain and the zoom degree of the picture of taking pictures joined
Number；
When the zoom degree parameter reaches preset threshold, according to the zoom degree parameter to focusing ROI window into
Mobile state is adjusted.
Further, processor 1001 can be also used for calling the ROI of the camera scaling focusing stored in memory 1005
Adjustment programme, and execute following operation:
Obtain the luminance information of picture after scaling；
The method also includes:
Dynamic regulation is carried out to the focusing ROI window according to the luminance information of picture after the scaling.
Further, processor 1001 can be also used for calling the ROI of the camera scaling focusing stored in memory 1005
Adjustment programme, and execute following operation:
Preset adjustment table is searched according to the luminance information of picture after the scaling, is obtained corresponding with the luminance information
Focusing ROI window adjustment parameter；
The focusing ROI window is adjusted according to the focusing ROI window adjustment parameter found.
Further, processor 1001 can be also used for calling the ROI of the camera scaling focusing stored in memory 1005
Adjustment programme, and execute following operation:
Focusing ROI information after adjusting is issued to preset phase focus algorithm, carries out corresponding phase focus operation.
Further, processor 1001 can be also used for calling the ROI of the camera scaling focusing stored in memory 1005
Adjustment programme, and execute following operation:
The adjustment table of mapping relations between setting screen luminance information and focusing ROI window adjustment parameter.
The embodiment of the present invention also proposes a kind of computer readable storage medium, stores on the computer readable storage medium
There is computer program, following operation realized when the computer program is executed by processor:
Detect camera take pictures picture zoom operations when, obtain and the zoom degree of the picture of taking pictures joined
Number；
When the zoom degree parameter reaches preset threshold, according to the zoom degree parameter to focusing ROI window into
Mobile state is adjusted.
Further, dynamic can also be carried out to the focusing ROI window according to the luminance information of picture after the scaling
It adjusts.
The present embodiment realizes that the ROI of camera scaling focusing adjusts principle, please refers to the various embodiments described above, no longer superfluous herein
It states.
ROI method of adjustment, device and the storage medium for a kind of camera scaling focusing that the embodiment of the present invention proposes, are being detected
Take pictures to camera picture zoom operations when, obtain the zoom degree parameter to the picture of taking pictures；In the scaling journey
When degree parameter reaches preset threshold, dynamic regulation is carried out to focusing ROI window according to the zoom degree parameter, to solve to contract
Put region and focusing ROI region it is inconsistent caused by focus fuzzy problem, improve the scaling focusing accuracy rate of camera.Into one
Step ground, can also obtain the luminance information of picture after scaling；According to the luminance information of picture after the scaling to the focusing ROI
Window carries out dynamic regulation, further increases the scaling focus effects of camera, improves the zoom focusing experience of user.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations
Equivalent structure made by description of the invention and accompanying drawing content or process transformation, are applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of region of interest ROI method of adjustment of camera scaling focusing characterized by comprising
Detect camera take pictures picture zoom operations when, obtain the zoom degree parameter to the picture of taking pictures；
When the zoom degree parameter reaches preset threshold, focusing ROI window is moved according to the zoom degree parameter
State is adjusted.
2. the ROI method of adjustment of camera scaling focusing according to claim 1, which is characterized in that described to detect phase
Machine take pictures picture zoom operations when, in the step of obtaining the zoom degree parameter to the picture of taking pictures further include:
Obtain the luminance information of picture after scaling；
The method also includes:
Dynamic regulation is carried out to the focusing ROI window according to the luminance information of picture after the scaling.
3. the ROI method of adjustment of camera scaling focusing according to claim 2, which is characterized in that described according to the contracting
Putting the step of luminance information of rear picture carries out dynamic regulation to the focusing ROI window includes:
Preset adjustment table is searched according to the luminance information of picture after the scaling, obtains focusing corresponding with the luminance information
ROI window adjustment parameter；
The focusing ROI window is adjusted according to the focusing ROI window adjustment parameter found.
4. the ROI method of adjustment of camera scaling focusing according to claim 1,2 or 3, which is characterized in that the method is also
Include:
Focusing ROI information after adjusting is issued to preset phase focus algorithm, carries out corresponding phase focus operation.
5. the ROI method of adjustment of camera according to claim 4 scaling focusing, which is characterized in that detect camera into
Before the zoom operations of capable picture of taking pictures, the method also includes:
The adjustment table of mapping relations between setting screen luminance information and focusing ROI window adjustment parameter.
6. a kind of ROI of camera scaling focusing adjusts device characterized by comprising
Obtain module, for detect camera take pictures picture zoom operations when, obtain the contracting to the picture of taking pictures
Put extent index；
Adjustment module, for when the zoom degree parameter reaches preset threshold, according to the zoom degree parameter to focusing
ROI window carries out dynamic regulation.
7. the ROI of camera scaling focusing according to claim 6 adjusts device, which is characterized in that
The acquisition module is also used to obtain the luminance information of picture after scaling；
The adjustment module is also used to carry out dynamic to the focusing ROI window according to the luminance information of picture after the scaling
It adjusts.
8. a kind of ROI of camera scaling focusing adjusts device characterized by comprising memory, processor and be stored in described
It is real when the computer program is executed by the processor on memory and the computer program that can run on the processor
Now following operation:
Detect camera take pictures picture zoom operations when, obtain the zoom degree parameter to the picture of taking pictures；
When the zoom degree parameter reaches preset threshold, focusing ROI window is moved according to the zoom degree parameter
State is adjusted.
9. the ROI of camera scaling focusing according to claim 8 adjusts device, which is characterized in that the computer program
Following operation is also realized when being executed by the processor:
Obtain the luminance information of picture after scaling；
Dynamic regulation is carried out to the focusing ROI window according to the luminance information of picture after the scaling.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program realizes following operation when the computer program is executed by processor:
Detect camera take pictures picture zoom operations when, obtain the zoom degree parameter to the picture of taking pictures；
When the zoom degree parameter reaches preset threshold, focusing ROI window is moved according to the zoom degree parameter
State is adjusted.
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Cited By (1)
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| WO2022121834A1 (en) * | 2020-12-08 | 2022-06-16 | 维沃移动通信（杭州）有限公司 | Continuous photographing method and apparatus, and electronic device |
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Application publication date: 20190322 |