CN106454123B - A kind of method and mobile terminal of focusing of taking pictures - Google Patents
A kind of method and mobile terminal of focusing of taking pictures Download PDFInfo
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- CN106454123B CN106454123B CN201611048291.7A CN201611048291A CN106454123B CN 106454123 B CN106454123 B CN 106454123B CN 201611048291 A CN201611048291 A CN 201611048291A CN 106454123 B CN106454123 B CN 106454123B
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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
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
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- Environmental & Geological Engineering (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Studio Devices (AREA)
- Focusing (AREA)
Abstract
The invention belongs to field of mobile terminals, provide the method and mobile terminal of a kind of focusing of taking pictures.In embodiments of the present invention, described two cameras are obtained first to the initial focal distance of target reference object, the target reference object is positioned by described two cameras, and the target reference object is detected at a distance from the mobile terminal, then detect brightness of the target reference object in the preview screen of taking pictures of the mobile terminal, and according to the target reference object at a distance from the mobile terminal with the focal distance of target reference object mobile terminal described in the brightness regulation in the preview screen of taking pictures of the mobile terminal.Method provided in an embodiment of the present invention and mobile terminal can more accurately calculate focal distance, to promote effect of taking pictures, promote the usage experience of user.
Description
Technical field
The invention belongs to field of mobile terminals more particularly to a kind of methods and mobile terminal of focusing of taking pictures.
Background technique
The prelude for having opened mobile Internet industry development is changed in the subversiveness that mobile intelligent terminal causes, and opens one
The new technical industry period.With the sustainable development of mobile intelligent terminal, influence power will radio, TV and internet shoulder to shoulder
(PC), become in human history the 4th infiltration extensively, it is universal rapidly, influence it is huge, deeply to human society life every aspect
End product.
For current mobile terminal when being taken pictures, generally not enough precisely, the effect that causes to take pictures is bad for focal distance, reduces
The usage experience of user.
Summary of the invention
A kind of method for being designed to provide focusing of taking pictures of the embodiment of the present invention, it is intended to solve current mobile terminal and take pictures
Focal distance is not accurate enough, leads to the bad problem of effect of taking pictures.
In order to solve the above-mentioned technical problem, the present invention is implemented as follows: a kind of method for focusing of taking pictures, is applied to movement
Terminal, the mobile terminal include two cameras for being set to the same side, be the described method comprises the following steps:
Described two cameras are obtained to the initial focal distance of target reference object；
The target reference object is positioned by described two cameras, and detect the target reference object with
The distance of the mobile terminal；
Detect brightness of the target reference object in the preview screen of taking pictures of the mobile terminal；
According to the target reference object at a distance from the mobile terminal with the target reference object in the movement
The focal distance of mobile terminal described in brightness regulation in the preview screen of taking pictures of terminal.
Further, described the step of target reference object is positioned by described two cameras, comprising:
It is taken pictures by user in the preview and chooses target reference object again in picture；
It is carried out after determining the target reference object by orientation of described two cameras to the target reference object
Positioning.
Further, the step of detection target reference object is at a distance from the mobile terminal, comprising:
The target reference object and the mobile terminal are detected by the default laser range finder of the mobile terminal
Distance.
Further, it is described according to the target reference object at a distance from the mobile terminal with the target shooting pair
As the mobile terminal described in the brightness regulation in the preview screen of taking pictures of the mobile terminal focal distance the step of, comprising: 1
The focusing focal length L2 of the mobile terminal is calculated according to following formula:
Wherein, L1 indicates the initial focal distance, and N1 indicates that the target reference object of the detection and the movement are whole
The distance at end, N2 indicate the corresponding target reference object of the initial focal distance at a distance from the mobile terminal, and K1 is indicated
Brightness of the target reference object in the preview screen of taking pictures of the mobile terminal, K2 indicate prediction reference brightness.
Further, the method also includes:
Detection carries out whether the image parameters that focusing is taken pictures meet parameter preset threshold according to the focal distance after the adjusting
Value；
If it is satisfied, then directly saving, otherwise prompts user to replace shooting angle and re-shoot.
The purpose of the embodiment of the present invention, which also resides in, provides a kind of mobile terminal, and the mobile terminal includes being set to the same side
Two cameras, the mobile terminal further include:
Acquiring unit, for obtaining described two cameras to the initial focal distance of target reference object；
First detection unit, for detecting the target reference object at a distance from the mobile terminal；
Second detection unit, for detecting the target reference object in the preview screen of taking pictures of the mobile terminal
Brightness；
Control unit, for according to the target reference object at a distance from the mobile terminal with the target shooting pair
As the focal distance of the mobile terminal described in the brightness regulation in the preview screen of taking pictures of the mobile terminal；
Wherein, the target reference object is positioned by described two cameras.
It is further, described in such a way that described two cameras position target reference object are as follows:
It is taken pictures by user in the preview and chooses target reference object again in picture；
It is carried out after determining the target reference object by orientation of described two cameras to the target reference object
Positioning.
Further, the first detection unit is specifically used for:
The target reference object and the mobile terminal are detected by the default laser range finder of the mobile terminal
Distance.
Further, described control unit is specifically used for:
The focusing focal length L2 of the mobile terminal is calculated according to following formula:
Wherein, L1 indicates the initial focal distance, and N1 indicates that the target reference object of the detection and the movement are whole
The distance at end, N2 indicate the corresponding target reference object of the initial focal distance at a distance from the mobile terminal, and K1 is indicated
Brightness of the target reference object in the preview screen of taking pictures of the mobile terminal, K2 indicate prediction reference brightness.
Further, the second detection unit also particularly useful for:
Detection carries out whether the image parameters that focusing is taken pictures meet parameter preset threshold according to the focal distance after the adjusting
Value；
If it is satisfied, then directly saving, otherwise prompts user to replace shooting angle and re-shoot.
In embodiments of the present invention, described two cameras are obtained first to the initial focal distance of target reference object,
The target reference object is positioned by described two cameras, and detects the target reference object and the movement
Then the distance of terminal detects brightness of the target reference object in the preview screen of taking pictures of the mobile terminal, and root
According to the target reference object at a distance from the mobile terminal with target reference object the taking pictures in the mobile terminal
The focal distance of mobile terminal described in brightness regulation in preview screen.Method provided in an embodiment of the present invention and mobile terminal energy
It is enough more accurately to calculate focal distance, to promote effect of taking pictures, promote the usage experience of user.
Detailed description of the invention
Fig. 1 be it is provided in an embodiment of the present invention applied to mobile terminal take pictures focusing method flow chart；
Fig. 2 is the circuit theory schematic diagram of mobile terminal provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
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.
Specific implementation of the invention is described in detail below in conjunction with specific embodiment:
Fig. 1 show it is provided in an embodiment of the present invention applied to mobile terminal take pictures focusing method process, in order to just
In explanation, part related to the embodiment of the present invention is only listed, details are as follows:
The embodiment of the invention provides a kind of methods of focusing of taking pictures, and are applied to mobile terminal, which includes setting
Two cameras of the same side are placed in, method includes the following steps:
Step S10 obtains two cameras to the initial focal distance of target reference object.In embodiments of the present invention,
It is once focused by above-mentioned two camera to target shooting correspondence first, detects initial focal distance.
Step S20 positions target reference object by two cameras, and detects target reference object and movement
The distance of terminal.In embodiments of the present invention, it is taken pictures by user in preview and chooses target reference object (this again in picture
Target reference object is identical as the target reference object in step S10, and the purpose of selection target reference object is more again
Accurately determine target reference object), pass through two cameras to the orientation of target reference object after determining target reference object
It is positioned, and target reference object is detected at a distance from mobile terminal by the default laser range finder of mobile terminal.
Step S30 detects brightness of the target reference object in the preview screen of taking pictures of mobile terminal.Implement in the present invention
In example, brightness of the target reference object in the preview screen of taking pictures of the mobile terminal can influence the quality taken pictures, in order to
Better quality of taking pictures, need to detect brightness of the target reference object in the preview screen of taking pictures of mobile terminal.
Step S40, according to target reference object at a distance from mobile terminal with target reference object mobile terminal bat
According to the focal distance of the brightness regulation mobile terminal in preview screen.
As a preferred embodiment of the present invention, the embodiment of step S40 are as follows:
The focusing focal length L2 of mobile terminal is calculated according to following formula:
Wherein, L1 indicates initial focal distance, and N1 indicates detection, and N2 indicates the corresponding target shooting of initial focal distance
For object at a distance from mobile terminal, K1 indicates brightness of the target reference object in the preview screen of taking pictures of mobile terminal, K2 table
Show prediction reference brightness.
According to above-mentioned formula it is found that the focusing focal length L2 of mobile terminal can by target reference object and mobile terminal away from
From and brightness of the target reference object in the preview screen of taking pictures of mobile terminal be adjusted so that the effect taken pictures is more
It is good.
As a preferred embodiment of the present invention, after the step s 40, further includes: detection is according to the focal distance after adjusting
Carry out whether the image parameters that focusing is taken pictures meet parameter preset threshold value；If it is satisfied, then directly saving, otherwise user is prompted more
Shooting angle is changed to re-shoot.The purpose of the embodiment of the present invention is to further confirm that quality of taking pictures, need if quality is not all right
Shooting angle is replaced to shoot better picture.
In embodiments of the present invention, described two cameras are obtained first to the initial focal distance of target reference object,
The target reference object is positioned by described two cameras, and detects the target reference object and the movement
Then the distance of terminal detects brightness of the target reference object in the preview screen of taking pictures of the mobile terminal, and root
According to the target reference object at a distance from the mobile terminal with target reference object the taking pictures in the mobile terminal
The focal distance of mobile terminal described in brightness regulation in preview screen.Method provided in an embodiment of the present invention and mobile terminal energy
It is enough more accurately to calculate focal distance, to promote effect of taking pictures, promote the usage experience of user.
Fig. 2 shows the circuit theory schematic diagrams of mobile terminal provided in an embodiment of the present invention, for ease of description, only arrange
Part related to the embodiment of the present invention out, details are as follows:
The embodiment of the present invention provides mobile terminal, and two cameras (not illustrating in figure) including being set to the same side are gone back
It include: acquiring unit 100, first detection unit 200, second detection unit 300 and control unit 400；
Acquiring unit 100, for obtaining two cameras to the initial focal distance of target reference object；
First detection unit 200, for detecting target reference object at a distance from mobile terminal；
Second detection unit 300, for detecting brightness of the target reference object in the preview screen of taking pictures of mobile terminal；
Control unit 400, for according to target reference object at a distance from mobile terminal with target reference object in movement
The focal distance of brightness regulation mobile terminal in the preview screen of taking pictures of terminal；
Wherein, target reference object is positioned by two cameras.
As a preferred embodiment of the present invention, in such a way that two cameras position target reference object are as follows:
It is taken pictures by user in preview and chooses target reference object again in picture；
The orientation of target reference object is positioned by two cameras after determining target reference object.
As a preferred embodiment of the present invention, first detection unit 200 is specifically used for:
Target reference object is detected at a distance from mobile terminal by the default laser range finder of mobile terminal.
As a preferred embodiment of the present invention, control unit 400 is specifically used for:
The focusing focal length L2 of mobile terminal is calculated according to following formula:
Wherein, L1 indicates initial focal distance, and the target reference object of N1 expression detection is at a distance from mobile terminal, N2 table
Show the corresponding target reference object of initial focal distance at a distance from mobile terminal, K1 indicates target reference object in mobile terminal
Preview screen of taking pictures in brightness, K2 indicate prediction reference brightness.
As a preferred embodiment of the present invention, second detection unit 300 also particularly useful for:
Detection carries out whether the image parameters that focusing is taken pictures meet parameter preset threshold value according to the focal distance after adjusting；
If it is satisfied, then directly saving, otherwise prompts user to replace shooting angle and re-shoot.
It should be noted that mobile terminal provided in an embodiment of the present invention and the above-mentioned mobile terminal that is applied to are taken pictures focusing
The embodiment of method is corresponding, and working principle and mode are corresponding applicable, just repeats no more here.
In embodiments of the present invention, described two cameras are obtained first to the initial focal distance of target reference object,
The target reference object is positioned by described two cameras, and detects the target reference object and the movement
Then the distance of terminal detects brightness of the target reference object in the preview screen of taking pictures of the mobile terminal, and root
According to the target reference object at a distance from the mobile terminal with target reference object the taking pictures in the mobile terminal
The focal distance of mobile terminal described in brightness regulation in preview screen.Method provided in an embodiment of the present invention and mobile terminal energy
It is enough more accurately to calculate focal distance, to promote effect of taking pictures, promote the usage experience of user.
It will be appreciated by those skilled in the art that only being carried out according to function logic for each unit that above-described embodiment includes
It divides, but is not limited to the above division, as long as corresponding functions can be realized；In addition, the tool of each functional unit
Body title is also only for convenience of distinguishing each other, the protection scope being not intended to restrict the invention.
Those of ordinary skill in the art be further appreciated that implement the method for the above embodiments be can
It is completed with instructing relevant hardware by program, the program can be stored in a computer-readable storage medium
In, described storage medium, including ROM/RAM, disk, CD etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of method for focusing of taking pictures, it is applied to mobile terminal, the mobile terminal includes being set to two of the same side to take the photograph
As head, which is characterized in that the described method comprises the following steps:
Described two cameras are obtained to the initial focal distance of target reference object；
The target reference object is positioned by described two cameras, and detect the target reference object with it is described
The distance of mobile terminal；
Detect brightness of the target reference object in the preview screen of taking pictures of the mobile terminal；
According to the target reference object at a distance from the mobile terminal with the target reference object in the mobile terminal
Preview screen of taking pictures in brightness regulation described in mobile terminal focal distance；
It is described according to the target reference object at a distance from the mobile terminal with the target reference object in the movement
The step of focal distance of mobile terminal described in brightness regulation in the preview screen of taking pictures of terminal, comprising:
The focusing focal length L2 of the mobile terminal is calculated according to following formula:
Wherein, L1 indicates the initial focal distance, and N1 indicates the target reference object and the mobile terminal of the detection
Distance, N2 indicates the corresponding target reference object of the initial focal distance at a distance from the mobile terminal, described in K1 expression
Brightness of the target reference object in the preview screen of taking pictures of the mobile terminal, K2 indicate prediction reference brightness.
2. the method according to claim 1, wherein it is described by described two cameras to target reference object
The step of being positioned, comprising:
It is taken pictures by user in the preview and chooses target reference object again in picture；
It is positioned after determining the target reference object by orientation of described two cameras to the target reference object.
3. the method according to claim 1, wherein the detection target reference object and the movement are eventually
End apart from the step of, comprising:
The target reference object is detected at a distance from the mobile terminal by the default laser range finder of the mobile terminal.
4. the method according to claim 1, wherein the method also includes:
Detection carries out whether the image parameters that focusing is taken pictures meet parameter preset threshold value according to the focal distance after the adjusting；
If it is satisfied, then directly saving, otherwise prompts user to replace shooting angle and re-shoot.
5. a kind of mobile terminal, the mobile terminal includes two cameras for being set to the same side, which is characterized in that the shifting
Dynamic terminal further include:
Acquiring unit, for obtaining described two cameras to the initial focal distance of target reference object；
First detection unit, for detecting the target reference object at a distance from the mobile terminal；
Second detection unit, it is bright in the preview screen of taking pictures of the mobile terminal for detecting the target reference object
Degree；
Control unit, for being existed at a distance from the mobile terminal with the target reference object according to the target reference object
The focal distance of mobile terminal described in brightness regulation in the preview screen of taking pictures of the mobile terminal；
Wherein, the target reference object is positioned by described two cameras；
Described control unit is specifically used for:
The focusing focal length L2 of the mobile terminal is calculated according to following formula:
Wherein, L1 indicates the initial focal distance, and N1 indicates the target reference object and the mobile terminal of the detection
Distance, N2 indicates the corresponding target reference object of the initial focal distance at a distance from the mobile terminal, described in K1 expression
Brightness of the target reference object in the preview screen of taking pictures of the mobile terminal, K2 indicate prediction reference brightness.
6. mobile terminal according to claim 5, which is characterized in that described to be shot by described two cameras to target
The mode that object is positioned are as follows:
It is taken pictures by user in the preview and chooses target reference object again in picture；
It is positioned after determining the target reference object by orientation of described two cameras to the target reference object.
7. mobile terminal according to claim 5, which is characterized in that the first detection unit is specifically used for:
The target reference object is detected at a distance from the mobile terminal by the default laser range finder of the mobile terminal.
8. mobile terminal according to claim 5, which is characterized in that the second detection unit also particularly useful for:
Detection carries out whether the image parameters that focusing is taken pictures meet parameter preset threshold value according to the focal distance after the adjusting；
If it is satisfied, then directly saving, otherwise prompts user to replace shooting angle and re-shoot.
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| CN201611048291.7A CN106454123B (en) | 2016-11-25 | 2016-11-25 | A kind of method and mobile terminal of focusing of taking pictures |
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| CN110572577B (en) * | 2019-09-24 | 2021-04-16 | 浙江大华技术股份有限公司 | Method, device, equipment and medium for tracking and focusing |
| WO2021259063A1 (en) * | 2020-06-23 | 2021-12-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and system for automatically zooming one or more objects present in a camera preview frame |
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