CN106595489A - Mobile terminal for real-time distance measurement and method - Google Patents
Mobile terminal for real-time distance measurement and method Download PDFInfo
- Publication number
- CN106595489A CN106595489A CN201610972555.1A CN201610972555A CN106595489A CN 106595489 A CN106595489 A CN 106595489A CN 201610972555 A CN201610972555 A CN 201610972555A CN 106595489 A CN106595489 A CN 106595489A
- Authority
- CN
- China
- Prior art keywords
- value
- definition
- picture
- focusing
- image distance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Studio Devices (AREA)
- Telephone Function (AREA)
Abstract
The invention provides a mobile terminal for real-time distance measurement, which comprises a searching module, a first calculation module and a second calculation module, wherein the searching module is used for searching the position of a picture meeting predetermined definition in a linear range according to an automatic focusing searching algorithm and further determining a focusing conversion value according to the position; the first calculation module is used for acquiring a focusing image distance value through calculation according to the focusing conversion value; and the second calculation module is used for acquiring an object distance value through calculation according to the focusing image distance value and the focus value. The invention also provides a real-time distance measurement method. According to the mobile terminal for real-time distance measurement provided by the invention, through lens focusing and a series of calculation, the distance between the object and a user can be estimated in real time, and thus, in a condition of not increasing any cost, the experience of the user is improved.
Description
Technical field
The present invention relates to technical field of mobile terminals, the mobile terminal of more particularly to a kind of real time distance and range finding side
Method.
Background technology
As mobile communication technology is developed rapidly, the function of smart mobile phone is also constantly being weeded out the old and bring forth the new.And in this mistake
Cheng Zhong, the development and application of shooting technology is particularly rapid, from initial 200,000 pixels development 21,000,000 pixels up till now, gradually into
For the emphasis of each brand marketers publicity.The continuous improvement of smart mobile phone computing capability and updating for various functions make very
That what is applied is developed into possibility more, thus, more contributing to the live and work of people, the life for giving people brings more sides
Just.
The content of the invention
The invention mainly solves the technical problem of providing a kind of mobile terminal and distance-finding method of real time distance, Neng Goushi
Shi Jinhang finds range, so as to increase the experience sense of user.
To solve above-mentioned technical problem, one aspect of the present invention is：A kind of movement of real time distance is provided
Terminal, including：
Search module, for according to auto-focusing searching algorithm, the search in linear scope to meet the figure of predetermined definition
The position of piece, and then focusing conversion value is determined according to the position；
First computing module, for being calculated to focus-image distance value according to the focusing conversion value；
Second computing module, for being calculated object distance value to focus-image distance value and focal length value according to described.
Wherein, the position when position of the picture for meeting predetermined definition is the definition maximum of the picture
Put.
Wherein, when the position when definition of the picture is maximum is that the definition of the picture reaches decline thresholding
Position, when the decline thresholding refers to that the definition of the picture is gradually increased to maximum, definition when beginning to decline.
Wherein, the mobile terminal also includes：
3rd computing module, in linear scope, by different 2 points of the first conversion value x1, the second conversion value x2
And corresponding first image distance value Y1 of difference, the second image distance value Y2, calculate slope k value and intercept b value；
First computing module is specifically for according to the slope k value, intercept b value and the focusing conversion value, calculating
Obtain to focus-image distance value.
To solve above-mentioned technical problem, another technical solution used in the present invention is：A kind of side of real time distance is provided
Method, comprises the steps：
According to auto-focusing searching algorithm, the search in linear scope meets the position of the picture of predetermined definition, and then
Focusing conversion value is determined according to the position；
It is calculated to focus-image distance value according to the focusing conversion value；
Object distance value is calculated to focus-image distance value and focal length value according to described.
Wherein, the position when position of the picture for meeting predetermined definition is the definition maximum of the picture
Put.
Wherein, when the position when definition of the picture is maximum is that the definition of the picture reaches decline thresholding
Position, when the decline thresholding refers to that the definition of the picture is gradually increased to maximum, definition when beginning to decline.
Wherein, it is described according to it is described focusing conversion value be calculated to focus-image distance value the step of, further include：
In linear scope, by different 2 points of the first conversion value x1, the second conversion value x2 and difference corresponding first
Image distance value Y1, the second image distance value Y2, calculate slope k value and intercept b value；
According to the slope k value, intercept b value and the focusing conversion value, it is calculated to focus-image distance value.
The invention has the beneficial effects as follows：It is different from the situation of prior art, the mobile end of the real time distance that the present invention is provided
End, can be with the distance of real-time estimation object distance user, so as to appoint not increasing by lens focusing and a series of calculating
In the case of what cost, the experience sense of user is improved.
Description of the drawings
Fig. 1 is the structural framing figure of the mobile terminal of an embodiment of the present invention；
Fig. 2 is the graph of a relation in auto-focusing searching algorithm, between the definition and focusing conversion value of picture；
Fig. 3 represents spring in motion process, the relation of image distance value and focusing conversion value；
Fig. 4 is the structural framing figure of the mobile terminal of another embodiment of the invention；
Fig. 5 is the method and step flow chart of the real time distance that the present invention is provided.
Specific embodiment
Below in conjunction with drawings and embodiments, the present invention is described in further detail.
Fig. 1 is referred to, the present invention provides a kind of mobile terminal 1 00 of real time distance, and mobile terminal 1 00 can be but be not limited to
Mobile phone, computer etc., in present embodiment, mobile terminal 1 00 is by taking mobile phone as an example.Focusing in mobile terminal 1 00 is exactly to adjust mirror
Head and the distance between imaging sensor so that shoot to image plane blur-free imaging face on an imaging sensor.And camera lens and into
Realized by the way that camera is locked into voice coil motor as the adjustment of the distance between sensor, voice coil motor include coil,
Group of magnets and spring, coil is fixed in group of magnets by the two of two ends springs, and when to coil electricity, coil can produce magnetic
Field, coil magnetic field and magnetite group interact, and coil can be moved up, and be locked in the camera in coil and just moved together, when
During power-off, coil is returned under shell fragment elastic force, thus, realizing automatic focusing function.And camera lens is moved within the specific limits, meet
Gauss is imaged theorem, i.e. 1/u+1/v=1/f, and wherein f is focal length value, and u is object distance value, and v is image distance value.
The real time distance mobile terminal 1 00 that the present invention is provided includes that search module 10, the first computing module 30, second are calculated
The computing module 70 of module 50 and the 3rd.
Search module 10 is used for according to auto-focusing searching algorithm, and the search in linear scope meets the figure of predetermined definition
The position of piece, and then focusing conversion value is determined according to position.
The position when position for meeting the picture of predetermined definition is the definition maximum of picture, the definition of picture
Position when maximum reaches position when declining thresholding for the definition of picture, decline thresholding refer to the definition of picture by
Definition when gradually increasing to maximum, when beginning to decline.
It is appreciated that referring to Fig. 2, when Series1 indicates entry into camera function, auto-focusing searching algorithm starts,
Scan for from a position, there is the definition of corresponding picture each position, and the definition of picture is before this as focusing turns
Change the increase of value and increase, after with focusing conversion value increase and reduce, it is clear when the definition of picture begins to decline
The corresponding focusing conversion value of degree is exactly the position that camera lens should be moved to.
It is appreciated that before auto-focusing searching algorithm starts, setting to the gap between adjacent focusing conversion value
When putting, the difference between two adjacent focusing conversion values can be reduced, so as to obtain the precision of the definition of higher picture.
It is appreciated that the camera lens of mobile terminal 1 00 is under the driving of voice coil motor, move in elastic limit, meet public
Formula F=Kx, wherein F represent the elastic force of spring, and K represents the stiffness factor of spring, and x represents the length that spring is elongated or shortened, right
Burnt conversion value is converted for the elastic force F of spring, and the stiffness factor K of spring is equal with slope k value, and the scope of conversion value of focusing is
0-1023。
First computing module 30 is used to be calculated to focus-image distance value according to focusing conversion value.
It is appreciated that during focusing, camera lens is moved with spring in elastic limit.Refer to Fig. 3, Fig. 3 tables
Show spring in motion process, the relation of image distance value and focusing conversion value, wherein ordinate represents image distance value, unit um, horizontal seat
Mark is that to move to corresponding to different distances be focusing conversion value, and wherein curve 1 (4) is spring reciprocating song downwards
Line, curve 2 (5) is the reciprocating curve of spring horizontal, and curve 3 (6) is spring reciprocating curve upwards.Can by Fig. 2
Know, only in certain limit, spring is only linear movement, other scopes are nonlinear.So ensureing to enter linear
Area, will the operating current of camera lens be set greater than starting current, it is possible to the reality of camera is ensured according to the linear character of spring
Border focus effects.
In present embodiment, the first computing module 30 is calculated to before focus-image distance value, the 3rd computing module 70 is in linear model
In enclosing, by different 2 points of the first conversion value x1, the second conversion value x2 and corresponding first image distance value Y1 of difference, the second image distance
Value Y2, calculates slope k value and intercept b value.
First computing module 30 is calculated to focus-image distance value according to slope k value, intercept b value and focusing conversion value.
Second computing module 50, object distance value is calculated for basis to focus-image distance value and focal length value.
Specifically, according to Gauss image-forming principle 1/u+1/v=1/f, wherein f is focal length value, and u is object distance value, and v is image distance
Value, obtains object distance value u=f*v/ (v-f), thus, obtaining object distance value.
It is different from prior art, the mobile terminal 1 00 of the real time distance that the present invention is provided is by lens focusing and a series of
Calculating, can be with the distance of real-time estimation object distance user, so as in the case where any cost is not increased, improve user
Experience sense.
Fig. 4 is referred to, the present invention also provides the mobile terminal 200 of another embodiment, and mobile terminal 200 includes processor
210 and memory 220, processor 210 is electrically connected with memory 220.
According to auto-focusing searching algorithm, the search in linear scope meets the picture of predetermined definition to processor 210
Position, and then focusing conversion value is determined according to position；It is calculated to focus-image distance value according to focusing conversion value；According to focus-image distance
Value and focal length value are calculated object distance value.
The position when position for meeting the picture of predetermined definition is the definition maximum of picture, the definition of picture
Position when maximum reaches position when declining thresholding for the definition of picture, decline thresholding refer to the definition of picture by
Definition when gradually increasing to maximum, when beginning to decline.
It is appreciated that before processor 210 is calculated to focus-image distance value, further in linear scope, by different 2 points
The first conversion value x1, the second conversion value x2 and respectively corresponding first image distance value Y1, the second image distance value Y2, calculate slope
K values and intercept b value, and according to slope k value, intercept b value and focusing conversion value, be calculated to focus-image distance value.
Memory 220 be used for store processor 210 calculate obtained by focusing conversion value, to focus-image distance value, focal length value with
And object distance value.
It is different from prior art, the mobile terminal 200 of the real time distance that the present invention is provided is by lens focusing and a series of
Calculating, can be with the distance of real-time estimation object distance user, so as in the case where any cost is not increased, improve user
Experience sense.
Fig. 5 is referred to, the present invention also provides a kind of method of real time distance, comprises the steps：
Step S101, according to auto-focusing searching algorithm, the search in linear scope meets the picture of predetermined definition
Position, and then focusing conversion value is determined according to position.
The position when position for meeting the picture of predetermined definition is the definition maximum of picture, the definition of picture
Position when maximum reaches position when declining thresholding for the definition of picture, decline thresholding refer to the definition of picture by
Definition when gradually increasing to maximum, when beginning to decline.
It is appreciated that when entering into camera function, auto-focusing searching algorithm starts, and scans for from a position, often
There is a definition of corresponding picture one position, and the definition of picture increases before this with the increase of focusing conversion value, after with
The increase of focusing conversion value and reduce, the focusing conversion value corresponding to the definition when the definition of picture begins to decline is just
It is position that camera lens should be moved to.
It is appreciated that according to the linear character of spring, F=Kx, wherein F represent the elastic force of spring, K represents the stiffness of spring
Coefficient, x represents the length that spring is elongated or shortened, and conversion value of focusing is converted for the elastic force F of spring, the stiffness factor of spring
K is equal with slope k value, and the scope of conversion value of focusing is 0-1023.
Step S102, is calculated to focus-image distance value according to focusing conversion value.
It is appreciated that calculate to focus-image distance value before, in linear scope, by different 2 points of the first conversion value x1,
Second conversion value x2 and respectively corresponding first image distance value Y1, the second image distance value Y2, calculate slope k value and intercept b value；Again
According to slope k value, intercept b value and focusing conversion value, it is calculated to focus-image distance value.
Step S103, according to focus-image distance value and focal length value object distance value is calculated.
Specifically, according to Gauss image-forming principle 1/u+1/v=1/f, wherein f is focal length value, and u is object distance value, and v is image distance
Value, obtains object distance value u=f*v/ (v-f), so obtains object distance value.
Prior art is different from, the method for the real time distance that the present invention is provided can be estimated in real time by a series of calculating
The distance of object distance user is surveyed, so as in the case where any cost is not increased, improve the experience sense of user.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (8)
1. a kind of mobile terminal of real time distance, it is characterised in that include：
Search module, for according to auto-focusing searching algorithm, the search in linear scope to meet the picture of predetermined definition
Position, and then focusing conversion value is determined according to the position；
First computing module, for being calculated to focus-image distance value according to the focusing conversion value；
Second computing module, for being calculated object distance value to focus-image distance value and focal length value according to described.
2. mobile terminal according to claim 1, it is characterised in that the position of the picture for meeting predetermined definition is
The position when definition of the picture is maximum.
3. mobile terminal according to claim 2, it is characterised in that the position when definition of the picture is maximum
Definition for the picture reaches position when declining thresholding, and the decline thresholding refers to that the definition of the picture gradually increases
When greatly to maximum, definition when beginning to decline.
4. mobile terminal according to claim 1, it is characterised in that the mobile terminal also includes：
3rd computing module, in linear scope, by different 2 points of the first conversion value x1, the second conversion value x2 and minute
Not corresponding first image distance value Y1, the second image distance value Y2, calculate slope k value and intercept b value；
First computing module is specifically for according to the slope k value, intercept b value and the focusing conversion value, being calculated
To focus-image distance value.
5. a kind of method of real time distance, it is characterised in that comprise the steps：
According to auto-focusing searching algorithm, the search in linear scope meets the position of the picture of predetermined definition, and then basis
The position determines focusing conversion value；
It is calculated to focus-image distance value according to the focusing conversion value；
Object distance value is calculated to focus-image distance value and focal length value according to described.
6. method according to claim 5, it is characterised in that the position of the picture for meeting predetermined definition is described
The position when definition of picture is maximum.
7. method according to claim 6, it is characterised in that the position when definition of the picture is maximum is institute
The definition for stating picture reaches position when declining thresholding, and the decline thresholding refers to that the definition of the picture is gradually increased to
Definition when maximum, when beginning to decline.
8. method according to claim 5, it is characterised in that described that focusing picture is calculated according to the focusing conversion value
Away from the step of value, further include：
In linear scope, by different 2 points of the first conversion value x1, the second conversion value x2 and corresponding first image distance of difference
Value Y1, the second image distance value Y2, calculate slope k value and intercept b value；
According to the slope k value, intercept b value and the focusing conversion value, it is calculated to focus-image distance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610972555.1A CN106595489A (en) | 2016-10-28 | 2016-10-28 | Mobile terminal for real-time distance measurement and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610972555.1A CN106595489A (en) | 2016-10-28 | 2016-10-28 | Mobile terminal for real-time distance measurement and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106595489A true CN106595489A (en) | 2017-04-26 |
Family
ID=58589737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610972555.1A Pending CN106595489A (en) | 2016-10-28 | 2016-10-28 | Mobile terminal for real-time distance measurement and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106595489A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108600620A (en) * | 2018-04-13 | 2018-09-28 | 上海大学 | A kind of method for tracking target of the mobile robot based on electro-hydraulic adjustable zoom lens |
| CN109239698A (en) * | 2018-08-02 | 2019-01-18 | 华勤通讯技术有限公司 | Camera distance measuring method and electronic equipment |
| CN109672783A (en) * | 2018-12-21 | 2019-04-23 | 惠州Tcl移动通信有限公司 | A kind of vision-control method, terminal device and the storage medium of terminal device |
| WO2019090556A1 (en) * | 2017-11-09 | 2019-05-16 | 深圳传音通讯有限公司 | Method for measuring size of object and mobile terminal |
| CN110243339A (en) * | 2019-06-25 | 2019-09-17 | 重庆紫光华山智安科技有限公司 | A kind of monocular cam localization method, device, readable storage medium storing program for executing and electric terminal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857633A (en) * | 2012-08-15 | 2013-01-02 | 苏州启智机电技术有限公司 | Mobile phone ranging system |
| CN104215216A (en) * | 2014-08-21 | 2014-12-17 | 深圳市金立通信设备有限公司 | Ranging device and terminal |
| US20150043783A1 (en) * | 2013-08-08 | 2015-02-12 | Canon Kabushiki Kaisha | Depth calculation device, imaging apparatus, and depth calculation method |
| CN104931957A (en) * | 2015-06-01 | 2015-09-23 | 广东欧珀移动通信有限公司 | Distance measurement method and device based on mobile terminal |
| CN105721777A (en) * | 2016-03-15 | 2016-06-29 | 惠州Tcl移动通信有限公司 | Photographing device and method capable of realizing precise focusing |
-
2016
- 2016-10-28 CN CN201610972555.1A patent/CN106595489A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857633A (en) * | 2012-08-15 | 2013-01-02 | 苏州启智机电技术有限公司 | Mobile phone ranging system |
| US20150043783A1 (en) * | 2013-08-08 | 2015-02-12 | Canon Kabushiki Kaisha | Depth calculation device, imaging apparatus, and depth calculation method |
| CN104215216A (en) * | 2014-08-21 | 2014-12-17 | 深圳市金立通信设备有限公司 | Ranging device and terminal |
| CN104931957A (en) * | 2015-06-01 | 2015-09-23 | 广东欧珀移动通信有限公司 | Distance measurement method and device based on mobile terminal |
| CN105721777A (en) * | 2016-03-15 | 2016-06-29 | 惠州Tcl移动通信有限公司 | Photographing device and method capable of realizing precise focusing |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019090556A1 (en) * | 2017-11-09 | 2019-05-16 | 深圳传音通讯有限公司 | Method for measuring size of object and mobile terminal |
| CN108600620A (en) * | 2018-04-13 | 2018-09-28 | 上海大学 | A kind of method for tracking target of the mobile robot based on electro-hydraulic adjustable zoom lens |
| CN108600620B (en) * | 2018-04-13 | 2021-02-23 | 上海大学 | Target tracking method of mobile robot based on electro-hydraulic adjustable-focus lens |
| CN109239698A (en) * | 2018-08-02 | 2019-01-18 | 华勤通讯技术有限公司 | Camera distance measuring method and electronic equipment |
| CN109239698B (en) * | 2018-08-02 | 2022-12-20 | 华勤技术股份有限公司 | Camera ranging method and electronic equipment |
| CN109672783A (en) * | 2018-12-21 | 2019-04-23 | 惠州Tcl移动通信有限公司 | A kind of vision-control method, terminal device and the storage medium of terminal device |
| CN110243339A (en) * | 2019-06-25 | 2019-09-17 | 重庆紫光华山智安科技有限公司 | A kind of monocular cam localization method, device, readable storage medium storing program for executing and electric terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106595489A (en) | Mobile terminal for real-time distance measurement and method | |
| CN108496350B (en) | Focusing processing method and device | |
| US20190028631A1 (en) | Auto-Focus Method and Apparatus and Electronic Device | |
| CN102984530B (en) | Image processing system and Atomatic focusing method | |
| US10269130B2 (en) | Methods and apparatus for control of light field capture object distance adjustment range via adjusting bending degree of sensor imaging zone | |
| EP3050290B1 (en) | Method and apparatus for video anti-shaking | |
| US9888163B2 (en) | Imaging device | |
| KR20190104216A (en) | Focus method, terminal and computer readable storage media | |
| CN104931957B (en) | A kind of distance measuring method and device based on mobile terminal | |
| RU2009107082A (en) | FIXING AND CREATING STEREO IMAGES AND STEREOVIDEO IN REAL TIME BY A MONOSCOPIC SMALL POWERED MOBILE DEVICE | |
| CN111147732B (en) | Focusing curve establishing method and device | |
| JP2015033103A (en) | Image processing device, image processing method, and program | |
| JP5497698B2 (en) | Projection apparatus having autofocus function and autofocus method thereof | |
| JP5991755B2 (en) | Automatic focus detection apparatus and control method thereof | |
| US20150178595A1 (en) | Image processing apparatus, imaging apparatus, image processing method and program | |
| US8433187B2 (en) | Distance estimation systems and method based on a two-state auto-focus lens | |
| EP2733923A2 (en) | Multiresolution depth from defocus based autofocus | |
| CN104811608A (en) | Image capturing apparatus and image defect correction method thereof | |
| JP2015148532A (en) | Distance measuring device, imaging apparatus, distance measuring method, and program | |
| US20130142394A1 (en) | System And Method For Performing Depth Estimation Utilizing Defocused Pillbox Images | |
| JPWO2012176556A1 (en) | Corresponding point search device and distance measurement device | |
| TW201350955A (en) | Method of auto-focus | |
| WO2016161734A1 (en) | Autofocusing method and device | |
| CN115314635A (en) | Model training method and device for determining defocus amount | |
| US8169532B2 (en) | Portable electronic device and method for measuring distance by performing auto focus function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170426 |
|
| RJ01 | Rejection of invention patent application after publication |