CN105301279B - A kind of speed measurement method based on camera, device and mobile terminal - Google Patents
A kind of speed measurement method based on camera, device and mobile terminal Download PDFInfo
- Publication number
- CN105301279B CN105301279B CN201510650089.0A CN201510650089A CN105301279B CN 105301279 B CN105301279 B CN 105301279B CN 201510650089 A CN201510650089 A CN 201510650089A CN 105301279 B CN105301279 B CN 105301279B
- Authority
- CN
- China
- Prior art keywords
- distance
- under test
- object under
- twice
- imaging
- 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.)
- Expired - Fee Related
Links
- 238000000691 measurement method Methods 0.000 title claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 73
- 238000003384 imaging method Methods 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000000875 corresponding effect Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000000827 velocimetry Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of speed measurement method based on camera, device and mobile terminal, wherein, method includes：Camera focusing and position it is fixed after, obtain twice imaging of the object under test on camera photosurface, photosurface is parallel to the travelling route of object under test；According to the position being imaged on twice on photosurface, the distance between imaging twice, the imaging displacement as object under test are calculated；Object distance is calculated according to the focal length of image distance and camera lens；The actual displacement of object under test is calculated according to imaging displacement, image distance and object distance；The time interval being imaged according to actual displacement and twice calculates the speed of object under test.The present invention is based on the cameras that mobile terminal carries, and carry out tachometric survey to moving object, without adding hardware device, solve the problems, such as that speed measuring equipment is complicated, speed measuring device of the invention is simple in structure, of low cost.
Description
Technical field
The invention belongs to technical field of mobile terminals, are related to a kind of speed measurement method based on camera, device and shifting
Dynamic terminal.
Background technology
In traffic engineering, speed is one of the basic significant data of metering with assessing road performance and traffic.Speed
The gathering method of degrees of data is there are many kind, including manual measurement fixed range running time method, pressure leather hose method, coil method, shadow
As facture, radar velocity measurement method and laser velocimetry etc..The wherein radar velocity measurement method high in accuracy owned by France, thus it is extensive
Using.
But radar is a complicated electric mechanical mechanism, including antenna, radome, feeder line, antenna pedestal, radar
Servounit transmission device, radar transmitter, radar cabinet, cabinet and its attachment, extraordinary electromechanical assembly, to ensure radar performance
And quality, the requirement to Radar Manufacturing is also very stringent, and therefore, the manufacture cost of radar velocity measurement equipment is higher.
The content of the invention
In view of this, the purpose of the present invention is to propose to a kind of speed measurement method based on camera, device and movement eventually
End to solve the problems, such as that speed measuring equipment is complicated, reduces manufacture cost.
To achieve the above object, the present invention adopts the following technical scheme that：
In a first aspect, an embodiment of the present invention provides a kind of speed measurement method based on camera, including：
Camera focusing and position it is fixed after, obtain twice imaging of the object under test on camera photosurface,
The photosurface is parallel to the travelling route of the object under test；
According to the position being imaged on twice on the photosurface, described the distance between imaging twice is calculated, is made
For the imaging displacement of the object under test；
Object distance is calculated according to the focal length of image distance and camera lens；
The actual displacement of the object under test is calculated according to the imaging displacement, image distance and object distance；
The speed of the object under test is calculated according to the actual displacement and the time interval being imaged twice.
Second aspect, an embodiment of the present invention provides a kind of velocity measuring device based on camera, including：
Be imaged acquisition module, for camera focusing and position it is fixed after, obtain object under test in camera sense
Imaging twice in smooth surface, the photosurface is parallel to the travelling route of the object under test；
Imaging displacement computing module for being imaged on the position on the photosurface twice according to, calculates described
The distance between imaging twice, the imaging displacement as the object under test；
Object distance computing module, for calculating object distance according to the focal length of image distance and camera lens；
Actual displacement computing module, for calculating the object under test according to the imaging displacement, image distance and object distance
Actual displacement；
Speed calculation module, for treating described in being calculated according to the actual displacement and the time interval being imaged twice
Survey the speed of object.
The third aspect, an embodiment of the present invention provides a kind of mobile terminal, the mobile terminal includes above-mentioned second aspect
The velocity measuring device and camera based on camera.
The beneficial effects of the invention are as follows：A kind of speed measurement method based on camera provided by the invention, device and shifting
Dynamic terminal, when surveying the speed of object under test, makes the camera minute surface of mobile terminal parallel to the travelling route of object under test, and
It focuses, completes to defocused, rapid measuring targets carry out continuous shooting, and mobile terminal is fixed during taking pictures, and obtains
Twice imaging of the object under test on camera photosurface；According to calculate imaging displacement, object distance, image distance and can be advance
The continuous shooting time interval of setting, i.e., the time interval being imaged twice calculate the speed of object under test, solve speed measuring equipment knot
The problem of structure is complicated without increasing hardware unit, reduces manufacture cost.
Description of the drawings
Exemplary embodiments of the present invention will be described in detail referring to the drawings by general below, makes those of ordinary skill in the art
The above-mentioned and other feature and advantage of the present invention are become apparent from, in attached drawing：
Fig. 1 is the flow diagram for the speed measurement method based on camera that the embodiment of the present invention one provides；
Fig. 2 is schematic diagram when being tested the speed using the camera of mobile terminal that the embodiment of the present invention one provides；
Fig. 3 is that the motor stress in the camera that the embodiment of the present invention one provides is subjected to displacement the schematic diagram of variation；
Fig. 4 is the lens and photosurface position relationship schematic diagram that the embodiment of the present invention one provides；
Fig. 5 is the object under test imaging schematic diagram that the embodiment of the present invention one provides；
Fig. 6 is the structure diagram of the velocity measuring device provided by Embodiment 2 of the present invention based on camera.
Specific embodiment
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.It is appreciated that
It is that specific embodiment described herein is used only for explaining the present invention rather than limitation of the invention.It further needs exist for illustrating
, part related to the present invention rather than entire infrastructure are illustrated only for ease of description, in attached drawing.
Embodiment one
Fig. 1 is the flow diagram for the speed measurement method based on camera that the embodiment of the present invention one provides.This method
Suitable for the situation of the translational velocity of object in measurement visual range, this method can be by setting base in the terminal
It is performed in the velocity measuring device of camera.The device can be realized by the mode of software and/or hardware.As shown in Figure 1,
This method includes：
Step 110, camera focusing and position it is fixed after, obtain object under test on camera photosurface two
Secondary imaging, wherein, photosurface is parallel to the travelling route of object under test.
Illustratively, when measuring the speed of object under test, the icon of tachometric survey on mobile terminal, mobile terminal are clicked on
Automatically turn on camera；Referring to Fig. 2, since the distance of object under test 15 to camera is not far, photosurface and object under test 15
Small angular deviation between travelling route influences measurement result less, and therefore, in practical operation, should trying one's best, it is mobile whole to make
The plane at end is parallel with the travelling route (arrow line that object under test 15 passes through in figure) of object under test 15, to ensure camera sense
Smooth surface is as far as possible parallel to the travelling route of object under test 15；Enter camera lens within sweep of the eye in object under test 15, complete focusing
Afterwards, keep mobile terminal fixed, rapid measuring targets 15 carry out continuous shooting, and above-mentioned velocity measuring device obtains object under test
15 imaging twice on camera photosurface.
Step 120, according to position on photosurface is imaged on twice, the distance between imaging twice is calculated, as treating
Survey the imaging displacement of object.
Since photosurface remains stationary as, for the object under test of movement, at different moments on photosurface
The position of imaging is also different, and velocity measuring device acquisition is imaged on the position on photosurface twice, photosensitive according to being imaged on twice
Position on face calculates the distance between imaging twice, using the distance as the imaging displacement of object under test.
Preferably, which may include：Analysis comparison is imaged twice, chooses the picture point conduct for being imaged corresponding position twice
Two reference points；Calculate the distance between two reference points, the imaging displacement as object under test.It will be imaged twice and carry out figure
It is as a reference point in wherein one picture point of Polaroid middle selection as processing, to it is another it is Polaroid with it is above-mentioned it is wherein Polaroid into
Row comparative analysis chooses the picture point of corresponding position as another reference point, calculates the distance between two reference points, treated
Survey the imaging displacement of object.Imaging displacement is calculated by reference to so that measurement result is more accurate.
Step 130 calculates object distance according to the focal length of image distance and camera lens.
Wherein, image distance can be calculated according to the size of driving current.In the present embodiment, referring to Fig. 3 and Fig. 4, motor
10 are arranged in the stent 12 of camera, and pass through spring 11 and draw, and the magnetic field force F being subject to balancing motor 10 makes motor 10
Some position of stent 12 can be fixed on, drives the lens 13 in camera flexible with this.Wherein, the position of stent 12 and its
Length limitation lens 13 are to the minimum value x of distance, that is, image distance of photosurface 14minWith maximum xmax, the initial position of lens 13
At image distance minimum value.
Specifically, small-sized magnetic field is distributed in camera bracket 12, the controller control driving circuit in mobile terminal leads to
Overdrive circuit is that motor 10 provides the driving current that size is I, drives current through 10 coil of motor, makes hot-wire coil in magnetic
It is subject to magnetic field force F, and magnetic field force size F=KBI in, wherein, K is constant, and B is magnetic field intensity, and I is driving current.This
When, motor 10 is also subject to the spring draft force F opposite with magnetic field force directionBulletEffect, and spring draft force size FBullet=kX,
Wherein, k is spring constant, and X is the displacement that motor 10 occurs.Work as FBulletWhen being balanced with F, motor 10 is fixed in stent 12, lens
13 stop movement, as a result, FBullet=F can be obtainedImage distanceTherefore, based on camera
Velocity measuring device obtains the size of driving current, can calculate image distance.
Specifically, after the velocity measuring device based on camera obtains image distance and focal length, object distance is calculated based on following formula：
Wherein, u is object distance, represents object under test to the distance of cam lens；V is image distance, represents lens to photosurface
Distance；F is focal length, represents lens centre to the distance of focus.
In the present embodiment, the focal length of mobile terminal camera lens can be a constant.
It should be noted that the image distance in the present embodiment can also be tested oneself by camera module, the speed based on camera
Degree measuring device directly acquires measurement result.
Step 140, the actual displacement that object under test is calculated according to imaging displacement, image distance and object distance.
Further, the velocity measuring device based on camera can calculate to be measured according to imaging displacement, image distance and object distance
The actual displacement of object.Referring to Fig. 5, when taking pictures for the first time, object under test 15 penetrates lens 13 on photosurface 14 into for the first time
Imaging 16, when taking pictures for the second time, object under test 15 is imaged through lens 13 on photosurface 14 into second of imaging 17, first time
The displacements of 16 to second imagings 17 are imaging displacement, since photosurface 14 is parallel to the travelling route of object under test 15,
Imaging displacement y, by similar triangles cor-responding identified theorems, can specifically be based on following formula parallel to the actual displacement x of object under test 15
Calculate the actual displacement size of object under test：
Wherein, x is the actual displacement of object under test；Y is the imaging displacement of object under test.
Step 150, the time interval being imaged according to actual displacement and twice calculate the speed of object under test.
Illustratively, the time interval of continuous shooting can be set before continuous shooting, determines to be imaged twice according to the time interval of continuous shooting
Time interval, the time interval being finally imaged according to actual displacement and twice calculates the speed of object under test, specifically can base
The speed of object under test is calculated in following formula：
Wherein, V is the speed of object under test, and Δ t is the time interval being imaged twice.
The speed measurement method based on camera that the embodiment of the present invention one provides when surveying the speed of object under test, makes
The camera minute surface of mobile terminal parallel to object under test travelling route, when object under test enters the cam lens visual field into
Row focusing, is completed to defocused, and rapid measuring targets carry out continuous shooting, and mobile terminal is fixed during taking pictures, and acquisition is treated
Survey twice imaging of the object on camera photosurface；According to the imaging displacement calculated, object distance, image distance and can set in advance
The continuous shooting time interval put, i.e., the time interval being imaged twice calculate the speed of object under test, solve speed measuring equipment structure
The problem of complicated, without increasing hardware unit, reduces manufacture cost.
Embodiment two
Fig. 6 is the structure diagram of the velocity measuring device provided by Embodiment 2 of the present invention based on camera.Such as Fig. 6 institutes
Show, which includes：It is imaged acquisition module 20, imaging displacement computing module 21, object distance computing module 22, actual displacement calculating mould
Block 23 and speed calculation module 24.
Wherein, be imaged acquisition module 20 be used for camera focusing and position it is fixed after, obtain object under test taking the photograph
As the imaging twice on head photosurface, wherein, photosurface is parallel to the travelling route of object under test；
Imaging displacement computing module 21 is used to, according to the position being imaged on twice on photosurface, calculate between being imaged twice
Distance, the imaging displacement as object under test；
Object distance computing module 22 is used to calculate object distance according to the focal length of image distance and camera lens；
Actual displacement computing module 23 is used to calculate the actual bit of object under test according to imaging displacement, image distance and object distance
It moves；
The time interval that speed calculation module 24 is used to be imaged according to actual displacement and twice calculates the speed of object under test
Degree.
Preferably, in said program, imaging displacement computing module 21 includes：
Reference point chooses unit, is imaged twice for analyzing comparison, chooses the picture point conduct for being imaged corresponding position twice
Two reference points；
Imaging displacement computing unit, for calculating the distance between two reference points, as object under test into image position
It moves.
Further, in said program, object distance computing module 22 is specifically used for：
Object distance is calculated based on following formula：
Wherein, u is object distance, represents cam lens to the distance of object under test travelling route；V is image distance, represents lens
To the distance of photosurface；F is focal length, represents lens centre to the distance of focus.
Further, in said program, actual displacement computing module 23 is specifically used for：
The actual displacement of object under test is calculated based on following formula：
Wherein, x is the actual displacement of object under test；Y is the imaging displacement of object under test.
The velocity measuring device based on camera that the embodiment of the present invention two is provided can be used for performing implementation of the present invention
The speed measurement method based on camera that example is provided, possesses corresponding function and advantageous effect.
Embodiment three
The mobile terminal that the embodiment of the present invention three provides, including the speed provided by Embodiment 2 of the present invention based on camera
Measuring device and camera.The mobile terminal can be by the velocity measuring device provided by the invention based on camera, using phase
The speed measurement method answered measures the translational speed of object in visual range.
Wherein, mobile terminal can be smart mobile phone, tablet computer or personal digital assistant etc..
The mobile terminal that the embodiment of the present invention three is provided, the speed based on camera provided including the embodiment of the present invention
Measuring device is spent, possesses corresponding function and advantageous effect.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various apparent variations,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (9)
1. a kind of speed measurement method based on camera, which is characterized in that including：
Camera focusing and position it is fixed after, obtain twice imaging of the object under test on camera photosurface, it is described
Photosurface is parallel to the travelling route of the object under test；
According to the position being imaged on twice on the photosurface, described the distance between imaging twice is calculated, as institute
State the imaging displacement of object under test；
Object distance is calculated according to the focal length of image distance and camera lens；
The actual displacement of the object under test is calculated according to the imaging displacement, image distance and object distance；
The speed of the object under test is calculated according to the actual displacement and the time interval being imaged twice；
Wherein, the time interval of continuous shooting, the time interval for determining to be imaged twice according to the time interval of continuous shooting are set before continuous shooting.
2. it according to the method described in claim 1, it is characterized in that, is imaged on twice on the photosurface described in the basis
Position calculates described the distance between imaging twice, as the imaging displacement of the object under test, including：
It is imaged twice described in analysis comparison, is imaged the picture point of corresponding position described in selection twice as two reference points；
The distance between described two reference points are calculated, the imaging displacement as the object under test.
3. according to the method described in claim 1, it is characterized in that, the focal length according to image distance and camera lens calculates object distance,
Including：
Object distance is calculated based on following formula：
Wherein, u is object distance, represents cam lens to the distance of object under test travelling route；V is image distance, represents that photosurface arrives
The distance of lens；F is focal length, represents focus to the distance of lens centre.
4. according to the method described in claim 3, it is characterized in that, described calculate according to the imaging displacement, image distance and object distance
Go out the actual displacement of the object under test, including：
The actual displacement of object under test is calculated based on following formula：
Wherein, x is the actual displacement of object under test；Y is the imaging displacement of object under test.
5. a kind of velocity measuring device based on camera, which is characterized in that including：
Be imaged acquisition module, for camera focusing and position it is fixed after, obtain object under test in camera photosurface
On imaging twice, the photosurface is parallel to the travelling route of the object under test；
Imaging displacement computing module, for described according to the position being imaged on twice on the photosurface, calculating twice
The distance between imaging, the imaging displacement as the object under test；
Object distance computing module, for calculating object distance according to the focal length of image distance and camera lens；
Actual displacement computing module, for calculating the reality of the object under test according to the imaging displacement, image distance and object distance
Displacement；
Speed calculation module, for calculating the determinand according to the actual displacement and the time interval being imaged twice
The speed of body；
Wherein, the time interval of continuous shooting, the time interval for determining to be imaged twice according to the time interval of continuous shooting are set before continuous shooting.
6. device according to claim 5, which is characterized in that the imaging displacement computing module includes：
Reference point chooses unit, is imaged twice described in comparison for analyzing, is imaged the picture point of corresponding position described in selection twice
As two reference points；
Imaging displacement computing unit, for calculating the distance between described two reference points, as the object under test into
Image displacement.
7. device according to claim 5, which is characterized in that the object distance computing module is specifically used for：
Object distance is calculated based on following formula：
Wherein, u is object distance, represents cam lens to the distance of object under test travelling route；V is image distance, represents lens to sense
The distance of smooth surface；F is focal length, represents lens centre to the distance of focus.
8. device according to claim 7, which is characterized in that the actual displacement computing module is specifically used for：
The actual displacement of object under test is calculated based on following formula：
Wherein, x is the actual displacement of object under test；Y is the imaging displacement of object under test.
9. a kind of mobile terminal, which is characterized in that the mobile terminal includes claim 5-8 any one of them and is based on camera shooting
The velocity measuring device and camera of head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650089.0A CN105301279B (en) | 2015-10-09 | 2015-10-09 | A kind of speed measurement method based on camera, device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510650089.0A CN105301279B (en) | 2015-10-09 | 2015-10-09 | A kind of speed measurement method based on camera, device and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105301279A CN105301279A (en) | 2016-02-03 |
| CN105301279B true CN105301279B (en) | 2018-06-01 |
Family
ID=55198783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510650089.0A Expired - Fee Related CN105301279B (en) | 2015-10-09 | 2015-10-09 | A kind of speed measurement method based on camera, device and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105301279B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856422B (en) | 2019-02-19 | 2022-03-22 | 成都京东方光电科技有限公司 | Acceleration sensor, acceleration measuring device and method |
| CN111896766A (en) * | 2020-07-08 | 2020-11-06 | 谢超奇 | Group migration speed measuring system and method |
| CN111899525A (en) * | 2020-08-18 | 2020-11-06 | 重庆紫光华山智安科技有限公司 | Distance measuring method, distance measuring device, electronic device, and storage medium |
| CN114125305A (en) * | 2021-12-01 | 2022-03-01 | 西安维沃软件技术有限公司 | Shooting method, device and equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7330569B2 (en) * | 2004-10-08 | 2008-02-12 | Huei-Yung Lin | Measurement method using blurred images |
| CN101753708A (en) * | 2008-12-22 | 2010-06-23 | 康佳集团股份有限公司 | Mobile phone capable of measuring velocity and method for measuring movement velocity of object by mobile phone |
| CN102098377A (en) * | 2010-12-02 | 2011-06-15 | 惠州Tcl移动通信有限公司 | Mobile phone and speed measurement method thereof |
| CN102798347A (en) * | 2012-08-28 | 2012-11-28 | 上海金玺实验室有限公司 | Measurement method of displacement and speed |
| CN102980561A (en) * | 2012-11-30 | 2013-03-20 | 广东欧珀移动通信有限公司 | Distance measuring method and distance measuring device of mobile terminal |
| CN103063138A (en) * | 2013-01-24 | 2013-04-24 | 惠州Tcl移动通信有限公司 | Methods for measuring size and speed of object by camera of mobile terminal, and mobile terminal |
| CN103969466A (en) * | 2014-05-09 | 2014-08-06 | 中国联合网络通信集团有限公司 | Method for measuring speed of vehicle and corresponding terminal |
| CN104133076A (en) * | 2014-07-30 | 2014-11-05 | 宇龙计算机通信科技(深圳)有限公司 | Speed measurement device and method and terminal |
-
2015
- 2015-10-09 CN CN201510650089.0A patent/CN105301279B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7330569B2 (en) * | 2004-10-08 | 2008-02-12 | Huei-Yung Lin | Measurement method using blurred images |
| CN101753708A (en) * | 2008-12-22 | 2010-06-23 | 康佳集团股份有限公司 | Mobile phone capable of measuring velocity and method for measuring movement velocity of object by mobile phone |
| CN102098377A (en) * | 2010-12-02 | 2011-06-15 | 惠州Tcl移动通信有限公司 | Mobile phone and speed measurement method thereof |
| CN102798347A (en) * | 2012-08-28 | 2012-11-28 | 上海金玺实验室有限公司 | Measurement method of displacement and speed |
| CN102980561A (en) * | 2012-11-30 | 2013-03-20 | 广东欧珀移动通信有限公司 | Distance measuring method and distance measuring device of mobile terminal |
| CN103063138A (en) * | 2013-01-24 | 2013-04-24 | 惠州Tcl移动通信有限公司 | Methods for measuring size and speed of object by camera of mobile terminal, and mobile terminal |
| CN103969466A (en) * | 2014-05-09 | 2014-08-06 | 中国联合网络通信集团有限公司 | Method for measuring speed of vehicle and corresponding terminal |
| CN104133076A (en) * | 2014-07-30 | 2014-11-05 | 宇龙计算机通信科技(深圳)有限公司 | Speed measurement device and method and terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105301279A (en) | 2016-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102494609B (en) | Three-dimensional photographing process based on laser probe array and device utilizing same | |
| CN105744163B (en) | A kind of video camera and image capture method based on depth information tracking focusing | |
| CN105301279B (en) | A kind of speed measurement method based on camera, device and mobile terminal | |
| CN108028887B (en) | Photographing focusing method, device and equipment for terminal | |
| WO2018082184A1 (en) | Distance measurement method and device, camera, and mobile terminal | |
| CN105744266B (en) | The inclinometric system and measurement method of camera module | |
| JP4673202B2 (en) | Image input device | |
| CN104931957B (en) | A kind of distance measuring method and device based on mobile terminal | |
| CN103776419B (en) | A kind of binocular distance measurement method improving measurement range | |
| CN105659580A (en) | Autofocus method, device and electronic apparatus | |
| CN104154898B (en) | A kind of initiative range measurement method and system | |
| CN104469169A (en) | Phase ranging camera shooting module and automatic focusing method thereof | |
| CN205581299U (en) | High accuracy camera chip multiple spot range unit that dual laser markd | |
| CN109084688B (en) | Binocular vision distance measurement method based on variable-focus camera | |
| WO2017117749A1 (en) | Follow focus system and method based on multiple ranging approaches, and photographing system | |
| CN101858741A (en) | Zoom ranging method based on single camera | |
| CN105136042A (en) | Height measuring method and apparatus, and mobile terminal | |
| CN101858742A (en) | Fixed-focus ranging method based on single camera | |
| CN104571135A (en) | Cloud deck tracking photography system and cloud deck tracking photography method | |
| KR100264393B1 (en) | Stereo Camera System by Prism | |
| CN108362479A (en) | A kind of determination method of virtual image image distance measuring system and virtual image image distance | |
| CN103791891A (en) | Device and method for testing electric appliance three-dimensional dynamic characteristics based on one camera | |
| CN106019531A (en) | Phase position ranging camera module and automatic alarming method thereof | |
| JP2012113204A (en) | Imaging device | |
| US20190230340A1 (en) | Three-dimensional image capturing device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 |