CN106412435B - Focusing method, device and mobile terminal - Google Patents
Focusing method, device and mobile terminal Download PDFInfo
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- CN106412435B CN106412435B CN201610890577.3A CN201610890577A CN106412435B CN 106412435 B CN106412435 B CN 106412435B CN 201610890577 A CN201610890577 A CN 201610890577A CN 106412435 B CN106412435 B CN 106412435B
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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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Abstract
The invention discloses a kind of focusing method, device and mobile terminals, wherein method is the following steps are included: open phase is focused, and records the defocus numerical value of each frame image in focus process；Determine the abnormal numerical value in defocus numerical value；Screen out abnormal numerical value；And it focuses according to the defocus numerical value after abnormal numerical value is screened out.This method can guarantee defocus numerical stability, the accuracy of collateral security phase focusing.
Description
Technical field
The present invention relates to image and optical technical field more particularly to a kind of focusing methods, device and mobile terminal.
Background technique
With the development of terminal device, user is more and more wider to the use of the camera functions such as terminal device such as mobile phone, camera
It is general.Clearly picture can be just taken to defocused when taking pictures.Currently, phase is focused because it is with focusing speed in focusing technology
Fast feature, is widely used.During phase focusing, phase difference gradually tends to be bordering on 0, corresponding defocus number
Value also gradually tends to be bordering on 0, i.e., mobile to focal position at leisure, to realize focusing.
But during phase focusing, if shadow of the acquisition phase by the factors such as hot-tempered point, extraneous light be unstable
It rings, the phase-detection data of output can be made unstable.To, cause defocus numerical value to jump, picture is caused to be shaken back and forth, into
And influence the accuracy of focusing.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
First purpose be to propose a kind of focusing method, and this method can guarantee defocus numerical stability, to guarantee phase pair
Burnt accuracy.
Second object of the present invention is to propose a kind of focusing mechanism.
Third object of the present invention is to propose a kind of mobile terminal.
To achieve the goals above, the focusing method of first aspect present invention embodiment, including open phase focusing, and remember
Record the defocus numerical value of each frame image in focus process；Determine the abnormal numerical value in defocus numerical value；Screen out abnormal numerical value；And root
It focuses according to the defocus numerical value after abnormal numerical value is screened out.
The focusing method of the embodiment of the present invention first turns on phase focusing, and records each frame image in focus process
Then defocus numerical value determines the abnormal numerical value in defocus numerical value and screens out abnormal data value, last according to after screening out abnormal numerical value
Defocus numerical value focus.This method can guarantee defocus numerical stability, to guarantee the accuracy of phase focusing.
In addition, the brush machine method of the embodiment of the present invention, also has following additional technical characteristic:
In one embodiment of the invention, the defocus numerical value of each frame image in focus process is recorded, comprising: detection is every
The phase-detection value of one frame image；Defocus numerical value is calculated according to phase-detection value.
In one embodiment of the invention, the abnormal numerical value in defocus numerical value is determined, comprising: obtain current frame image
Defocus numerical value；The defocus numerical value of current frame image is compared with the defocus numerical value of previous frame image；If current frame image
Defocus numerical value be greater than the defocus numerical value of previous frame image, it is determined that the defocus numerical value of current frame image is abnormal numerical value.
In one embodiment of the invention, further includes: if the defocus numerical value of current frame image is less than previous frame image
Defocus numerical value, it is determined that the defocus numerical value of current frame image be regime values；It is focused according to regime values.
In one embodiment of the invention, further includes: the defocus numerical value for determining current frame image be regime values it
Afterwards, the defocus numerical value of current frame image is updated.
In one embodiment of the invention, the defocus numerical value of current frame image is updated, comprising: calculate current frame image
The average value of the defocus numerical value of defocus numerical value and previous frame image, using average value as the defocus number of updated current frame image
Value.
It further include after the defocus numerical value for updating current frame image, after update in one embodiment of the present of invention
The defocus numerical value of current frame image focus.
In order to achieve the above object, the focusing mechanism of second aspect of the present invention embodiment, including logging modle, it is used for open phase
Focusing, and record the defocus numerical value of each frame image in focus process；Determining module, for determining the abnormal number in defocus numerical value
Value；Module is screened out, for screening out abnormal numerical value；And Focusing module, for according to screen out the defocus numerical value after abnormal numerical value into
Row focusing.
The focusing mechanism of the embodiment of the present invention first turns on phase focusing, and records each frame image in focus process
Then defocus numerical value determines the abnormal numerical value in defocus numerical value and screens out abnormal data value, last according to after screening out abnormal numerical value
Defocus numerical value focus.This method can guarantee defocus numerical stability, to guarantee the accuracy of phase focusing.
In addition, the focusing mechanism of the embodiment of the present invention, also has following additional technical characteristic:
In one embodiment of the invention, logging modle, comprising: detection unit, for detecting the phase of each frame image
Position detected value；Computing unit, for calculating defocus numerical value according to phase-detection value.
In one embodiment of the invention, determining module is used for: obtaining the defocus numerical value of current frame image；It will be current
The defocus numerical value of frame image is compared with the defocus numerical value of previous frame image；Before if the defocus numerical value of current frame image is greater than
The defocus numerical value of one frame image, it is determined that the defocus numerical value of current frame image is abnormal numerical value.
In one embodiment of the invention, determining module is also used to: if before the defocus numerical value of current frame image is less than
The defocus numerical value of one frame image, it is determined that the defocus numerical value of current frame image is regime values；Focusing module, for according to normal
Numerical value is focused.
It in one embodiment of the invention, further include update module, in the defocus numerical value for determining current frame image
After regime values, the defocus numerical value of current frame image is updated.
In one embodiment of the invention, update module, for calculating the defocus numerical value and former frame of current frame image
The average value of the defocus numerical value of image, using average value as the defocus numerical value of updated current frame image.
In one embodiment of the invention, Focusing module is also used to: update current frame image defocus numerical value it
Afterwards, it is focused according to the defocus numerical value of updated current frame image.
In order to achieve the above object, the mobile terminal of third aspect present invention embodiment, comprising: shell, power circuit, circuit
Plate, processor and memory, wherein circuit board is placed in the space interior that shell surrounds, and processor and memory are arranged in electricity
On the plate of road；Power circuit, for each circuit or the device power supply for terminal device；Memory is for storing executable program generation
Code；Processor runs journey corresponding with executable program code by reading the executable program code stored in memory
Sequence, for executing following steps:
Open phase focusing, and record the defocus numerical value of each frame image in focus process；
Determine the abnormal numerical value in defocus numerical value；
Screen out abnormal numerical value；And
It focuses according to the defocus numerical value after abnormal numerical value is screened out.
The mobile terminal of the embodiment of the present invention first turns on phase focusing, and records each frame image in focus process
Then defocus numerical value determines the abnormal numerical value in defocus numerical value and screens out abnormal data value, last according to after screening out abnormal numerical value
Defocus numerical value focus.This method can guarantee defocus numerical stability, to guarantee the accuracy of phase focusing.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the flow chart of focusing method according to an embodiment of the invention；
Fig. 2 is the flow chart of focusing method accord to a specific embodiment of that present invention；
Fig. 3 is the structural schematic diagram of focusing mechanism according to an embodiment of the invention；
Fig. 4 is the structural schematic diagram of focusing mechanism accord to a specific embodiment of that present invention；
Fig. 5 is the structural schematic diagram of mobile terminal according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the focusing method, device and mobile terminal of the embodiment of the present invention are described.
Fig. 1 is the flow chart of focusing method according to an embodiment of the invention.
As shown in Figure 1, focusing method can include:
S101, open phase focusing, and record the defocus numerical value of each frame image in focus process.
Specifically, it is assumed that user travels at certain sight spot, and quasi- spare mobile phone takes an ancient building object, and at this moment user opens hand
Camera in machine, after capturing building with camera, open phase focusing.It should be noted that in addition to mobile phone, user
Other photographing devices with phase focus function can also be used, this is not construed as limiting.
In open phase to defocused, the image in picture of finding a view can be detected, detect the phase of each frame image
Detected value.Then, the defocus numerical value of each frame image is calculated according to the phase-detection value of each frame image, and is recorded each
The defocus numerical value of frame image.It should be noted that defocus numerical value is calculated using the prior art, details are not described herein again.
Wherein, defocus numerical value indicates the position of clutch coke.Defocus numerical value is smaller, indicates that the position of clutch coke is closer.When from
Burnt numerical value level off to 0 when, indicate be in the position of focus, that is, complete to focus.
S102 determines the abnormal numerical value in defocus numerical value.
Specifically, the defocus numerical value of current frame image is obtained according to the defocus numerical value of record.Obtaining current frame image
After defocus numerical value, the defocus numerical value of current frame image is compared with the defocus numerical value of previous frame image, it is current to determine
Whether the defocus numerical value of frame image is abnormal numerical value.
If the defocus numerical value of current frame image be greater than previous frame image defocus numerical value, it is determined that current frame image from
Burnt numerical value is abnormal numerical value.Specific example is as follows: the defocus numerical value for the current frame image that a certain moment obtains is 80, former frame figure
The defocus numerical value of picture is 50.At this moment, the defocus numerical value 80 of current frame image is greater than the defocus numerical value 50 of previous frame image.Due to
In phase focus process, may by sensor noise or extraneous light be unstable etc., factors are influenced, lead to current frame image
Phase-detection value increase suddenly, and then cause the defocus numerical value of current frame image relative to previous frame image defocus numerical value send out
Mutation is given birth to.Therefore, the defocus numerical value of current frame image is determined as abnormal numerical value.
If the defocus numerical value of current frame image be less than previous frame image defocus numerical value, it is determined that current frame image from
Burnt numerical value is regime values.Specific example is as follows: the defocus numerical value for the current frame image that a certain moment obtains is 60, former frame figure
The defocus numerical value of picture is 70.Since the defocus numerical value 60 of current frame image is less than the defocus numerical value 70 of previous frame image.Therefore,
The defocus numerical value of current frame image is determined as regime values.
S103 screens out abnormal numerical value.
Specifically, if the defocus numerical value of current frame image is abnormal numerical value, the defocus numerical value of current frame image is screened out.
It should be noted that if the defocus numerical value of current frame image is abnormal numerical value, after screening out the exception numerical value,
Focus operation will not be carried out according to the exception numerical value, but directly acquire the defocus numerical value of next frame image.Obtaining next frame
After the defocus numerical value of image, the former frame figure of the defocus numerical value for the next frame image that will acquire and the current frame image screened out
The defocus numerical value of picture is compared, to determine whether the defocus numerical value of next frame image is abnormal numerical value.If next frame image
Defocus numerical value be abnormal numerical value, then screen out the defocus numerical value of next frame image.Specific example is as follows:
The defocus numerical value for the current frame image that a certain moment obtains is 60, and the defocus numerical value of previous frame image is 50.Due to,
The defocus numerical value 60 of current frame image is greater than the defocus numerical value 50 of previous frame image, then can determine the defocus number of current frame image
Value is abnormal numerical value.Therefore, the defocus numerical value 60 of current frame image is screened out.Next, the defocus numerical value of next frame image is obtained,
And the defocus numerical value for the next frame image that will acquire and the defocus numerical value 50 of previous frame image are compared, to determine next frame figure
Whether the defocus numerical value of picture is abnormal numerical value.If the defocus numerical value of next frame image is abnormal numerical value, next frame figure is screened out
The defocus numerical value of picture.
S104 focuses according to the defocus numerical value after abnormal numerical value is screened out.
Specifically, if the defocus numerical value of current frame image is regime values, according to the defocus numerical value of current frame image
It focuses.
It should be noted that if the defocus numerical value of current frame image is regime values, according to the defocus of current frame image
Numerical value carries out continuing to judge whether the defocus numerical value of next frame image is abnormal numerical value to defocused, until completing focus process.Tool
Body example is as follows:
It is assumed that being carried out in phase focus process to heritage buildings, the defocus of the first frame image of the heritage buildings of record
Numerical value is 100, and the defocus numerical value of the second frame image is 90, and the defocus numerical value of third frame image is 102, the defocus of the 4th frame image
Numerical value is 80, and the defocus numerical value of the 5th frame image is 75, and the defocus numerical value of the 6th frame image is 80, the defocus number of the 7th frame image
Value is 70, and the defocus numerical value of the 8th frame image is 60.
Firstly, the defocus numerical value of the defocus numerical value of first frame image and the second frame image is compared.Due to the second frame
The defocus numerical value 90 of image is less than the defocus numerical value 100 of first frame image, therefore the defocus numerical value of the second frame image is normal number
Value.After the defocus numerical value for determining the second frame image is regime values, according to the defocus numerical value of the defocus numerical value of the second frame image
90 focus.
Next, obtaining the defocus numerical value of third frame image.Since the defocus numerical value of, third frame image is 102 to be greater than the
The defocus numerical value 90 of two frame images.Accordingly, it can be determined that the defocus numerical value of third frame image is abnormal numerical value and screens out third frame figure
The defocus numerical value 102 of picture.
After the defocus numerical value for screening out third frame image, focus operation is not carried out according to the exception numerical value, directly acquired
The defocus numerical value of 4th frame image.At this moment, the defocus numerical value 80 for the 4th frame image that will acquire and the defocus number of the second frame image
Value 90 is compared, it may be determined that the defocus numerical value 80 of the 4th frame image is regime values.In the defocus number for determining the 4th frame image
It is worth to be focused after regime values according to the defocus numerical value 80 of the 4th frame image.After focusing, obtain the 5th frame image from
Burnt numerical value.
According to above-mentioned steps, it can be concluded that, the defocus numerical value 75 of next 5th frame image is regime values, the 6th frame
The defocus numerical value 80 of image is screened out, and the defocus numerical value 70 of the 7th frame image is regime values, the defocus numerical value of the 8th frame image
60 be regime values.
By the above process it is found that being in the defocus numerical value and six frame images for screening out third frame image to the focusing of heritage buildings
Defocus numerical value after, according to the defocus numerical value 100 of first frame image, the defocus numerical value 90 of the second frame image, the 4th frame figure from
Burnt numerical value 80, the defocus numerical value 75 of the 5th frame image, the defocus numerical value 70 of the 7th frame image, the 8th frame image defocus numerical value 60
It focuses.After screening out abnormal numerical value, gradually decreased from the defocus numerical value of defocus to the 8th frame image of first frame image.
Therefore, according to screening out the defocus numerical value of first frame image after abnormal numerical value, the defocus numerical value of the second frame image, the 4th frame figure
Defocus numerical value, the defocus numerical value of the 5th frame image, the defocus numerical value of the 7th frame image, the defocus numerical value of the 8th frame image carry out pair
Coke improves the stability of focusing so that focus process will not tend to be clear because of when there is abnormal numerical value and causing, when and become
In fuzzy.
It is said from entire focus process, the focusing method of the embodiment of the present invention is after controlling camera according to abnormal numerical value is screened out
Defocus numerical value focus.That is, being focused according to all regime values.Due to screen out after abnormal numerical value from
Burnt numerical value gradually decreases and levels off to 0, is finally completed focusing.Thus it is guaranteed that the accuracy of focusing.
The focusing method of the embodiment of the present invention first turns on phase focusing, and records each frame image in focus process
Then defocus numerical value determines the abnormal numerical value in defocus numerical value and screens out abnormal numerical value, and during the focusing process according to normal number
Value is focused.This method can guarantee defocus numerical stability, to guarantee the accuracy of phase focusing.
Fig. 2 is the flow chart of focusing method accord to a specific embodiment of that present invention.
As shown in Fig. 2, focusing method can include:
S201, open phase focusing, and record the defocus numerical value of each frame image in focus process.
Specifically, it is assumed that user travels at certain sight spot, and quasi- spare mobile phone takes an ancient building, and at this moment user opens mobile phone
In camera, after capturing building with camera, open phase focusing.It should be noted that in addition to mobile phone, Yong Huye
Other photographing devices with phase focus function can be used, this is not construed as limiting.
After open phase focusing, the image in picture of finding a view can be detected, detect the phase of each frame image
Position detected value.Then, the defocus numerical value of each frame image is calculated according to phase-detection value, and record each frame image from
Burnt numerical value.It should be noted that defocus numerical value is calculated using the prior art, details are not described herein again.
Wherein, defocus numerical value indicates the position of clutch coke.Defocus numerical value is smaller, indicates that the position of clutch coke is closer.When from
Burnt numerical value level off to 0 when, indicate be in the position of focus, that is, complete to focus.
S202 judges whether defocus numerical value is abnormal numerical value.
Specifically, the defocus numerical value of current frame image is obtained according to the defocus numerical value of record.Obtaining current frame image
After defocus numerical value, the defocus numerical value of current frame image is compared with the defocus numerical value of previous frame image, it is current to determine
Whether the defocus numerical value of frame image is abnormal numerical value.
S203 screens out abnormal numerical value if defocus numerical value is abnormal numerical value.
Specifically, it if the defocus numerical value of current frame image is greater than the defocus numerical value of previous frame image, can determine current
The defocus numerical value of frame image is abnormal numerical value.Specific example is as follows: the defocus numerical value for the current frame image that some moment obtains
It is 80, the defocus numerical value of previous frame image is 50.At this moment, the defocus numerical value 80 of current frame image is greater than the defocus of previous frame image
Numerical value 50.Due to that may be influenced, be caused by the noise of sensor or extraneous unstable factor etc. in phase focus process
The phase-detection value of current frame image increases suddenly, and then causes the defocus numerical value of current frame image relative to previous frame image
Defocus numerical value is mutated.Therefore, the defocus numerical value of current frame image is determined as abnormal numerical value.
It should be noted that if the defocus numerical value of current frame image is abnormal numerical value, after screening out the exception numerical value, no
Focus operation can be carried out according to the exception numerical value, but directly acquire the defocus numerical value of next frame image.Obtaining next frame figure
After the defocus numerical value of picture, the previous frame image of the defocus numerical value for the next frame image that will acquire and the current frame image screened out
Defocus numerical value be compared, to determine whether the defocus numerical value of next frame image is abnormal numerical value.If next frame image
Defocus numerical value is abnormal numerical value, then screens out the defocus numerical value of next frame image.Specific example is as follows:
The defocus numerical value for the current frame image that a certain moment obtains is 60, and the defocus numerical value of previous frame image is 50.Due to,
The defocus numerical value 60 of current frame image is greater than the defocus numerical value 50 of previous frame image, then the defocus numerical value of current frame image is abnormal
Numerical value.Therefore, the defocus numerical value 60 of current frame image is screened out.Next, obtaining the defocus numerical value of next frame image, and will acquire
The defocus numerical value of next frame image and the defocus numerical value 50 of previous frame image be compared, to determine the defocus of next frame image
Whether numerical value is abnormal numerical value.If the defocus numerical value of next frame image is abnormal numerical value, the defocus of next frame image is screened out
Numerical value.
S204, if defocus numerical value is not abnormal numerical value, it is determined that be regime values, and update defocus numerical value.
Specifically, it if the defocus numerical value of current frame image is less than the defocus numerical value of previous frame image, can determine current
The defocus numerical value of frame image is regime values.After the defocus numerical value for determining current frame image is regime values, update current
The defocus numerical value of frame image.
More specifically, the defocus numerical value for determining current frame image be regime values after, calculate current frame image from
The average value of the defocus numerical value of burnt numerical value and previous frame image, using average value as the defocus numerical value of updated present image.
Specific example is as follows: the defocus numerical value for the current frame image that a certain moment obtains is 60, and the defocus numerical value of previous frame image is 80.
Since the defocus numerical value 60 of, current frame image is less than the defocus numerical value 80 of previous frame image, can determine current frame image from
Burnt numerical value 60 is regime values.
After the defocus numerical value 60 for determining current frame image is regime values, the defocus numerical value of current frame image is updated.It is first
First, the average value of the defocus numerical value 60 of current frame image and the defocus numerical value 80 of previous frame image is calculated, average value is calculated
It is 70.Then, the defocus numerical value by average value 70 as current frame image after updating, i.e. the defocus numerical value of current frame image update
It is 70.
S205 focuses according to updated defocus numerical value.
Specifically, if the defocus numerical value of current frame image is regime values, in the defocus numerical value for updating current frame image
Later, it is focused according to the defocus numerical value of updated current frame image.
It should be noted that continue under judgement to defocused in the defocus numerical value according to updated current frame image
Whether the defocus numerical value of one frame image is abnormal numerical value.Step S202 to S205 is repeated, until completing focus process.Specific example
It is as follows:
It is assumed that heritage buildings carry out phase focusing during, the first frame image of the heritage buildings of record from
Burnt numerical value is 100, and the defocus numerical value of the second frame image is 90, and the defocus numerical value of third frame image is 102, the 4th frame image from
Burnt numerical value is 80, and the defocus numerical value of the 5th frame image is 75, and the defocus numerical value of the 6th frame image is 80.
Firstly, obtaining the defocus numerical value of the second frame image.Since the defocus numerical value 90 of the second frame image is less than first frame figure
The defocus numerical value 100 of picture, therefore the defocus numerical value of the second frame image is regime values.In the defocus numerical value for determining the second frame image
After regime values, the average value of the defocus numerical value 90 of the second frame image and the defocus numerical value 100 of first frame image is calculated.In root
After the defocus numerical value for updating the defocus numerical value of the second frame image according to average value 95, according to updated second frame image defocus numerical value
95 focus.
Next, obtaining the defocus numerical value of third frame image.Since the defocus numerical value of, third frame image is 102 to be greater than the
The defocus numerical value 95 of two frame images.Accordingly, it can be determined that the defocus numerical value of third frame image is abnormal numerical value and screens out third frame figure
The defocus numerical value 102 of picture.
After the defocus numerical value for screening out third frame image, is not focused according to the exception numerical value, directly acquire the 4th
The defocus numerical value of frame image.At this moment, the defocus numerical value 80 for the 4th frame image that will acquire and the defocus numerical value 95 of the second frame image
It is compared, it may be determined that the defocus numerical value 80 of the 4th frame image is regime values.Determining that the defocus numerical value of the 4th frame image is
After regime values, the average value of the defocus numerical value 80 of the 4th frame image and the defocus numerical value 95 of the second frame image is calculated.In basis
After average value 87.5 updates the defocus numerical value of the 4th frame image, carried out according to the defocus numerical value 87.5 of updated 4th frame image
Focusing.After focusing, the defocus numerical value of the 5th frame image is obtained.
According to above-mentioned steps, it can be concluded that, the defocus numerical value of next 5th frame image is regime values, updated
The defocus numerical value of 5th frame image is 81.25；The defocus numerical value of 6th frame image is regime values, the figure of updated 6th frame
The defocus numerical value of picture is 80.625.
Therefore, to the focusing of ancient building be after the defocus numerical value for screening out third frame image, according to first frame image from
Burnt numerical value 100, the defocus numerical value 95 of updated second frame image, the defocus numerical value 87.5 of updated 4th frame image, more
The defocus numerical value 80.625 of the 6th frame image is focused after the defocus numerical value 81.25 of the 5th frame image after new and update.
Due to, after the defocus numerical value for screening out third frame image, the defocus numerical value of the defocus numerical value of first frame image to the 6th frame image by
It reduces.Therefore, according to screening out the defocus numerical value of the first frame image after abnormal numerical value, the defocus number of updated second frame image
Defocus numerical value, the updated 6th frame figure of value, the defocus numerical value of updated 4th frame image, updated 5th frame image
The defocus numerical value of picture is focused, and the stability of focusing is improved, so that focus process will not cause because of there is abnormal numerical value
When and tend to be clear, when and tend to be fuzzy.
It is said from entire focus process, the focusing method of the embodiment of the present invention is after controlling camera according to abnormal numerical value is screened out
Defocus numerical value focus.That is, being focused according to all updated defocus numerical value.Due to screening out abnormal numerical value
Updated defocus numerical value afterwards gradually decreases and levels off to 0, is finally completed focusing.Thus it is guaranteed that the accuracy of focusing.
The focusing method of the embodiment of the present invention screens out different constant value, updates the defocus numerical value for being confirmed as regime values,
And focused, keep defocus numerical value smoother and stablized according to updated defocus numerical value, further ensure phase focusing
Accuracy.
In order to realize above-described embodiment, the invention also provides a kind of focusing mechanism, Fig. 3 is an implementation according to the present invention
The structural schematic diagram of the focusing mechanism of example.
As shown in figure 3, focusing mechanism includes: logging modle 310, determining module 320, screens out module 330, Focusing module
340。
Logging modle 310 focuses for open phase, and records the defocus numerical value of each frame image in focus process.Note
Recording module 310 includes detection unit 311 and computing unit 312.
Detection unit 311, for detecting the phase-detection value of each frame image.
Computing unit 312, for calculating defocus numerical value according to phase-detection value.
Specifically, it is assumed that user travels at certain sight spot, and quasi- spare mobile phone takes an ancient building, and at this moment user opens mobile phone
In camera, after capturing building with camera, 310 open phase of logging modle focusing.It should be noted that in addition to hand
Except machine, other photographing devices with phase focus function are can also be used in user, are not construed as limiting to this.
In 310 open phase of logging modle to defocused, detection unit 311 can detect the image in picture of finding a view,
Detect the phase-detection value of each frame image.Then, computing unit 312 calculates each frame image according to phase-detection value
Defocus numerical value, logging modle 310 record the defocus numerical value of each frame image.It should be noted that defocus numerical value is using existing
There is technology to be calculated, details are not described herein again.
Wherein, defocus numerical value indicates the position of clutch coke.Defocus numerical value is smaller, indicates that the position of clutch coke is closer.When from
Burnt numerical value level off to 0 when, indicate be in the position of focus, that is, complete to focus.
Determining module 320, for determining the abnormal numerical value in defocus numerical value.
Specifically, it is determined that module 320 obtains the defocus numerical value of current frame image according to the defocus numerical value of record.Determining mould
After block 320 obtains the defocus numerical value of current frame image, by the defocus number of the defocus numerical value of current frame image and previous frame image
Value is compared, to determine whether the defocus numerical value of current frame image is abnormal numerical value.
If the defocus numerical value of current frame image is greater than the defocus numerical value of previous frame image, it is determined that the determination of module 320 is worked as
The defocus numerical value of prior image frame is abnormal numerical value.Specific example is as follows: the defocus numerical value for the current frame image that a certain moment obtains
It is 80, the defocus numerical value of previous frame image is 50.At this moment, the defocus numerical value 80 of present image is greater than the defocus number of previous frame image
Value 50.Due in phase focus process, may by sensor noise or extraneous light be unstable etc. that factors are influenced, lead
It causes the phase-detection value of current frame image to increase suddenly, and then causes the defocus numerical value of current frame image relative to previous frame image
Defocus numerical value be mutated.Accordingly, it is determined that the defocus numerical value of current frame image is determined as abnormal numerical value by module 320.
If the defocus numerical value of current frame image is less than the defocus numerical value of previous frame image, it is determined that the determination of module 320 is worked as
The defocus numerical value of prior image frame is regime values.Specific example is as follows: the defocus number for the current frame image that some moment obtains
Value is 60, and the defocus numerical value of previous frame image is 70.Due to the defocus numerical value 60 of, current frame image be less than previous frame image from
Burnt numerical value 70.Accordingly, it is determined that the defocus numerical value 60 of current frame image is determined as regime values by module 320.
Module 330 is screened out, for screening out abnormal numerical value.
Specifically, if it is determined that module 320 determines that the defocus numerical value of current frame image is abnormal numerical value, then screening module
330 screen out the defocus numerical value of current frame image.
It should be noted that if the defocus numerical value of current frame image is abnormal numerical value, screening out module 330, to screen out this different
After regular data value, determining module 320 directly acquires the defocus numerical value of next frame image.Next frame figure is obtained in determining module 320
After the defocus numerical value of picture, the previous frame image of the defocus numerical value for the next frame image that will acquire and the current frame image screened out
Defocus numerical value be compared, to determine whether the defocus numerical value of next frame image is abnormal numerical value.If next frame image
Defocus numerical value is abnormal numerical value, then screens out the defocus numerical value that module 330 screens out next frame image.Specific example is as follows:
The defocus numerical value for the current frame image that a certain moment determining module 320 obtains is 60, the defocus number of previous frame image
Value is 50.Since the defocus numerical value 60 of current frame image is greater than the defocus numerical value 50 of previous frame image, it is determined that module 320 is true
The defocus numerical value of settled prior image frame is abnormal numerical value.Therefore, it screens out module 330 and screens out defocus numerical value 60.It is next determined that mould
Block 320 obtains the defocus numerical value of next frame image, and the defocus numerical value for the next frame image that will acquire and previous frame image from
Burnt numerical value 50 is compared, to determine whether the defocus numerical value of next frame image is abnormal numerical value.If next frame image from
Burnt numerical value is abnormal numerical value, then screens out the defocus numerical value that module 330 screens out next frame image.
Focusing module 340, the defocus numerical value after abnormal numerical value is screened out for basis are focused.
Specifically, if the defocus numerical value of current frame image is regime values, Focusing module 340 is according to current frame image
Defocus numerical value is focused.
It should be noted that if the defocus numerical value of current frame image is regime values, in Focusing module 340 according to current
After the defocus numerical value of frame image is focused, continue to judge whether the defocus numerical value of next frame image is abnormal numerical value, until
Complete focus process.
The focusing method of the embodiment of the present invention is that Focusing module 340 is carried out according to the defocus numerical value after screening out abnormal numerical value
Focusing.That is, being focused according to all regime values.It is gradually decreased due to screening out the defocus numerical value after abnormal numerical value
And 0 is approached, it is finally completed focusing.Thus it is guaranteed that the accuracy of focusing.
It should be noted that the aforementioned explanation to focusing method embodiment is also applied for the focusing dress of the embodiment
It sets, details are not described herein again.
The focusing mechanism of the embodiment of the present invention first turns on phase focusing, and records each frame image in focus process
Then defocus numerical value determines the abnormal numerical value in defocus numerical value and screens out abnormal numerical value, and during the focusing process according to normal number
Value is that the defocus numerical value after screening out abnormal numerical value is focused.This method can guarantee defocus numerical stability, guarantee phase
The accuracy of focusing.
Fig. 4 is the structural schematic diagram of focusing mechanism accord to a specific embodiment of that present invention.
As shown in figure 4, focusing mechanism includes logging modle 310, determining module 320, screens out module 330, update module
350, Focusing module 340.
Focusing module 340 is focused for open phase, and records the defocus numerical value of each frame image in focus process.Record mould
Block includes detection unit 311 and computing unit 312.
Detection unit 311, for detecting the phase-detection value of each frame image.
Computing unit 312, for calculating defocus numerical value according to phase-detection value.
Specifically, it is assumed that user travels at certain sight spot, and quasi- spare mobile phone takes an ancient building, and at this moment user opens mobile phone
In camera, after capturing building with camera, 310 open phase of logging modle focusing.It should be noted that in addition to hand
Except machine, other photographing devices with phase focus function are can also be used in user, are not limited thereto.
In 310 open phase of logging modle to defocused, detection unit 311 can detect the image in picture of finding a view,
Detect the phase-detection value of each frame image, computing unit 312 calculates the defocus of each frame image according to phase-detection value
Numerical value, logging modle 310 record the defocus numerical value of each frame image.It should be noted that defocus numerical value is to utilize existing skill
What art was calculated, details are not described herein again.
Wherein, defocus numerical value indicates the position of clutch coke.Defocus numerical value is smaller, indicates that the position of clutch coke is closer.When from
Burnt numerical value level off to 0 when, indicate be in the position of focus, that is, complete to focus.
Determining module 320, for determining the abnormal numerical value in defocus numerical value.
Specifically, it is determined that module 320 obtains the defocus numerical value of current frame image according to the defocus numerical value of record.Determining mould
After block 320 obtains the defocus numerical value of current frame image, by the defocus number of the defocus numerical value of current frame image and previous frame image
Value is compared, to determine whether the defocus numerical value of current frame image is abnormal numerical value.
If the defocus numerical value of current frame image is greater than the defocus numerical value of previous frame image, it is determined that module 320 can be true
The defocus numerical value of settled prior image frame is abnormal numerical value.Specific example is as follows: what the determining module 320 that a certain moment obtains obtained
The defocus numerical value of current frame image is 80, and the defocus numerical value of previous frame image is 50.At this moment, the defocus numerical value 80 of current frame image
Greater than the defocus numerical value 50 of previous frame image.It, may be by the noise or exterior light of sensor due in phase focus process
The influence for the factors such as line is unstable, causes the phase-detection value of current frame image to increase suddenly, and then lead to current frame image
Defocus numerical value is mutated relative to the defocus numerical value of previous frame image.Accordingly, it is determined that module 320 by current frame image from
Burnt numerical value is determined as abnormal numerical value.
Module 330 is screened out, for screening out abnormal numerical value.
Specifically, if it is determined that module 320 determines that the defocus numerical value of current frame image is abnormal numerical value, then screens out module
330 screen out the defocus numerical value of current frame image.
It should be noted that if the defocus numerical value of current frame image is abnormal numerical value, screening out module 330, to screen out this different
After regular data value, determining module 320 directly acquires the defocus numerical value of next frame image.Next frame figure is obtained in determining module 320
After the defocus numerical value of picture, the previous frame image of the defocus numerical value for the next frame image that will acquire and the current frame image screened out
Defocus numerical value be compared, to determine whether the defocus numerical value of next frame image is abnormal numerical value.If next frame image
Defocus numerical value is abnormal numerical value, then screens out the defocus numerical value of next frame image.Specific example is as follows:
The defocus numerical value for the current frame image that a certain moment determining module 320 obtains is 60, the defocus number of previous frame image
Value is 50.Since the defocus numerical value 60 of current frame image is greater than the defocus numerical value 50 of previous frame image, it is determined that module 320 is true
The defocus numerical value of settled prior image frame is abnormal numerical value.Therefore, the defocus numerical value 60 that module 330 screens out current frame image is screened out.
It is next determined that the defocus numerical value for the next frame image that module 320 obtains, and by the defocus numerical value of next frame image and defocus number
Value 50 is compared, to determine whether the defocus numerical value of next frame image is abnormal numerical value.If the defocus number of next frame image
Value is abnormal numerical value, then screens out the defocus numerical value that module 330 screens out next frame image.
Update module 350, for updating present frame figure after the defocus numerical value for determining current frame image is regime values
The defocus numerical value of picture.
Specifically, determine that the defocus numerical value of current frame image is update module after regime values in determining module 320
350 update the defocus numerical value of current frame image.
More specifically, determining that the defocus numerical value of current frame image is update module after regime values in determining module 320
350 calculate current frame images defocus numerical value and previous frame image defocus numerical value average value, using average value as update after
Present image defocus numerical value.Specific example is as follows: the defocus numerical value for the current frame image that determining module 320 obtains is 60,
The defocus numerical value of previous frame image is 80.The defocus numerical value 60 of current frame image is less than the defocus numerical value 80 of previous frame image, really
Cover half block 320 determines that the defocus numerical value 60 of current frame image is regime values.
Determining module 320 determine current frame image defocus numerical value 60 be regime values after, the update of update module 350 is worked as
The defocus numerical value of prior image frame.Firstly, update module 350 calculate current frame image defocus numerical value 60 and previous frame image from
The average value of burnt numerical value 80, it is 70 that average value, which is calculated,.Then, the defocus by average value 70 as current frame image after updating
The defocus numerical value of numerical value, i.e. current frame image is updated to 70.
Focusing module 340 is also used to after the defocus numerical value for updating current frame image, according to updated present frame figure
The defocus numerical value of picture is focused.
Specifically, if the defocus numerical value of current frame image is regime values, current frame image is updated in update module 350
Defocus numerical value after, Focusing module 340 is focused according to the defocus numerical value with updated current frame image.
It should be noted that carried out according to the defocus numerical value of updated current frame image to defocused in Focusing module 340,
Determining module 320 continues to judge whether the defocus numerical value of next frame image is abnormal numerical value, until completing focus process.
From entire focus process will, the focusing method of the embodiment of the present invention is Focusing module 350 according to screening out abnormal number
Defocus numerical value after value is focused, that is to say, that is focused according to all updated defocus numerical value.Due to screening out exception
Updated defocus numerical value after numerical value gradually decreases and levels off to 0, is finally completed focusing.Thus it is guaranteed that focusing is accurate
Property.
It should be noted that the aforementioned explanation to focusing method embodiment is also applied for the focusing dress of the embodiment
It sets, details are not described herein again.
The focusing mechanism of the embodiment of the present invention screens out different constant value, updates the defocus numerical value for being confirmed as regime values,
And focused, keep defocus numerical value smoother and stablized according to updated defocus numerical value, further ensure phase focusing
Accuracy.
In order to realize above-described embodiment, the invention also provides another mobile terminals.
Mobile terminal provided in an embodiment of the present invention, as shown in Figure 5, comprising: shell 51, power circuit 52, circuit board 53,
Processor 54 and memory 55, wherein circuit board 53 is placed in the space interior that shell 51 surrounds, processor 54 and memory 55
It is arranged on circuit board 53；Power circuit 52, for each circuit or the device power supply for terminal device；Memory 55 is for depositing
Store up executable program code；Processor 54 is run and executable journey by reading the executable program code stored in memory
The corresponding program of sequence code, for executing following steps:
Open phase focusing, and record the defocus numerical value of each frame image in focus process；
Determine the abnormal numerical value in defocus numerical value；
Screen out abnormal numerical value；And
It focuses according to the defocus numerical value after abnormal numerical value is screened out.
The mobile terminal of the embodiment of the present invention first turns on phase focusing, and records each frame image in focus process
Then defocus numerical value determines the abnormal numerical value in defocus numerical value and screens out abnormal data value, last according to after screening out abnormal numerical value
Defocus numerical value focus.This method can guarantee defocus numerical stability, to guarantee the accuracy of phase focusing.
In the description of this specification, reference term: " one embodiment ", " example ", " is specifically shown " some embodiments "
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (13)
1. a kind of focusing method characterized by comprising
Open phase focusing, and record the defocus numerical value of each frame image in focus process；
Determine the abnormal numerical value in the defocus numerical value, the abnormal numerical value in the determination defocus numerical value includes: that acquisition is worked as
The defocus numerical value of prior image frame；The defocus numerical value of the current frame image is compared with the defocus numerical value of previous frame image；
If the defocus numerical value of the current frame image is greater than the defocus numerical value of the previous frame image, it is determined that the current frame image
Defocus numerical value be abnormal numerical value；
Screen out the abnormal numerical value, wherein if the defocus numerical value of the current frame image is abnormal numerical value, screen out described work as
The defocus numerical value of prior image frame, and the defocus numerical value of next frame image is obtained, by the defocus numerical value of the next frame image and institute
The defocus numerical value for stating the previous frame image of current frame image is compared, with the defocus numerical value of the determination next frame image whether
For abnormal numerical value；And
It focuses according to the defocus numerical value after the abnormal numerical value is screened out.
2. the method as described in claim 1, which is characterized in that the defocus numerical value of each frame image, packet in record focus process
It includes:
Detect the phase-detection value of each frame image；
The defocus numerical value is calculated according to the phase-detection value.
3. the method as described in claim 1, which is characterized in that further include:
If the defocus numerical value of the current frame image is less than the defocus numerical value of the previous frame image, it is determined that the present frame
The defocus numerical value of image is regime values；
It is focused according to the regime values.
4. the method as described in claim 1, which is characterized in that further include:
After the defocus numerical value for determining the current frame image is regime values, the defocus number of the current frame image is updated
Value.
5. method as claimed in claim 4, which is characterized in that update the defocus numerical value of the current frame image, comprising:
The average value for calculating the defocus numerical value of the current frame image and the defocus numerical value of the previous frame image, will be described average
It is worth the defocus numerical value as the updated current frame image.
6. method as claimed in claim 5, which is characterized in that further include:
After the defocus numerical value for updating the current frame image, according to the defocus numerical value of the updated current frame image into
Row focusing.
7. a kind of focusing mechanism characterized by comprising
Logging modle focuses for open phase, and records the defocus numerical value of each frame image in focus process；
Determining module, for determining the abnormal numerical value in the defocus numerical value；The determining module, for obtaining current frame image
Defocus numerical value；The defocus numerical value of the current frame image is compared with the defocus numerical value of previous frame image；If described
The defocus numerical value of current frame image is greater than the defocus numerical value of the previous frame image, it is determined that the defocus number of the current frame image
Value is abnormal numerical value；
Module is screened out, for screening out the abnormal numerical value, wherein if the defocus numerical value of the current frame image is abnormal number
Value, then screen out the defocus numerical value of the current frame image, and obtain the defocus numerical value of next frame image, by the next frame image
Defocus numerical value be compared with the defocus numerical value of the previous frame image of the current frame image, with the determination next frame image
Defocus numerical value whether be abnormal numerical value；And
Focusing module, the defocus numerical value after the abnormal numerical value is screened out for basis are focused.
8. device as claimed in claim 7, which is characterized in that the logging modle, comprising:
Detection unit, for detecting the phase-detection value of each frame image；
Computing unit, for calculating the defocus numerical value according to the phase-detection value.
9. device as claimed in claim 7, which is characterized in that the determining module is also used to:
If the defocus numerical value of the current frame image is less than the defocus numerical value of the previous frame image, it is determined that the present frame
The defocus numerical value of image is regime values；
The Focusing module, for being focused according to the regime values.
10. device as claimed in claim 7, which is characterized in that described device further include:
Update module, for updating the present frame after the defocus numerical value for determining the current frame image is regime values
The defocus numerical value of image.
11. device as claimed in claim 10, which is characterized in that the update module is used for:
The average value for calculating the defocus numerical value of the current frame image and the defocus numerical value of the previous frame image, will be described average
It is worth the defocus numerical value as the updated current frame image.
12. device as claimed in claim 11, which is characterized in that the Focusing module is also used to:
After the defocus numerical value for updating the current frame image, according to the defocus numerical value of the updated current frame image into
Row focusing.
13. a kind of mobile terminal characterized by comprising shell, power circuit, circuit board, processor and memory, wherein
The circuit board is placed in the space interior that the shell surrounds, and the processor and the memory are arranged in the circuit board
On；The power circuit, for each circuit or the device power supply for the mobile terminal；The memory is for storing and can hold
Line program code；The processor is held to run with described by reading the executable program code stored in the memory
The corresponding program of line program code, for executing following steps:
Open phase focusing, and record the defocus numerical value of each frame image in focus process；
Determine the abnormal numerical value in the defocus numerical value, the abnormal numerical value in the determination defocus numerical value includes: that acquisition is worked as
The defocus numerical value of prior image frame；The defocus numerical value of the current frame image is compared with the defocus numerical value of previous frame image；
If the defocus numerical value of the current frame image is greater than the defocus numerical value of the previous frame image, it is determined that the current frame image
Defocus numerical value be abnormal numerical value；
Screen out the abnormal numerical value, wherein if the defocus numerical value of the current frame image is abnormal numerical value, screen out described work as
The defocus numerical value of prior image frame, and the defocus numerical value of next frame image is obtained, by the defocus numerical value of the next frame image and institute
The defocus numerical value for stating the previous frame image of current frame image is compared, with the defocus numerical value of the determination next frame image whether
For abnormal numerical value；And
It focuses according to the defocus numerical value after the abnormal numerical value is screened out.
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| CN111556247B (en) * | 2020-05-07 | 2021-08-06 | 展讯通信（上海）有限公司 | DCC acquisition method, DCC focusing method and system, camera module and terminal |
| CN112269131B (en) * | 2020-12-21 | 2021-04-06 | 季华实验室 | Speed ring PI oscillation detection method and device, electronic equipment and storage medium |
| CN115037871A (en) * | 2021-03-05 | 2022-09-09 | Oppo广东移动通信有限公司 | Method and device for controlling focusing, electronic equipment and computer readable storage medium |
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