CN109451236A - A kind of camera focus method based on the tracking of pupil position - Google Patents
A kind of camera focus method based on the tracking of pupil position Download PDFInfo
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- CN109451236A CN109451236A CN201811343972.5A CN201811343972A CN109451236A CN 109451236 A CN109451236 A CN 109451236A CN 201811343972 A CN201811343972 A CN 201811343972A CN 109451236 A CN109451236 A CN 109451236A
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- camera
- pupil position
- electronic viewfinder
- pupil
- tracking
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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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- Signal Processing (AREA)
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Abstract
The invention discloses a kind of camera focus methods based on the tracking of pupil position, comprising the following steps: S1, the electronic viewfinder of eye-observation camera, the light source on the outside of electronic viewfinder issues infrared ray to human eye at this time；S2, the camera at camera electronic viewfinder captures eye image at this time, and eye image information is transferred to camera controller；S3, camera controller defines pupil position information, S4 according to the luminance difference of pupil and iris in eye image obtained, camera controller is focused scene in electronic viewfinder, opposite with pupil position information according to resulting pupil position information；S5, camera controller is completed to focus later, issues prompt information, and it is i.e. capable of taking pictures that personnel press shutter, the beneficial effects of the present invention are: it is focused accurately, it is simple and convenient, even if still can be accurately focused in the case where shooting angle or limited camera site.
Description
Technical field
The present invention is a kind of camera focus method based on the tracking of pupil position.
Background technique
Camera is a kind of equipment for forming image using optical imaging concept and using negative writing image, is for taking the photograph
The optical instrument of shadow.There is the equipment that much can recorde image in modern society's life, they all have the feature of camera,
Such as medical imaging devices, astronomical observation equipment etc..The light that subject reflects by photographic film (taking the photograph scenery mirror) and
After the shutter focusing for controlling light exposure, subject forms sub-image on the photosensitive material in camera bellows, (i.e. aobvious through flushing processing
Shadow, fixing) permanent image is constituted, this technology is known as photography, is divided into general photograph and images with profession.
Existing camera focus be typically all it is automatic focus, focusing is not efficient enough and accurately, especially in shooting angle or
In the case that camera site is limited.
Summary of the invention
The purpose of the present invention is to provide a kind of camera focus methods based on the tracking of pupil position, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme:
A kind of camera focus method based on the tracking of pupil position, comprising the following steps:
S1, the electronic viewfinder of eye-observation camera, the light source on the outside of electronic viewfinder issues infrared ray to human eye at this time；
S2, the camera at camera electronic viewfinder captures eye image at this time, and eye image information is transferred to camera control
Device processed；
S3, camera controller define pupil position information according to the luminance difference of pupil and iris in eye image obtained,
S4, camera controller according to resulting pupil position information, to it is in electronic viewfinder, with pupil position information phase
Pair scene be focused；
S5, camera controller is completed to focus later, issues prompt information, it is i.e. capable of taking pictures that personnel press shutter.
As a further solution of the present invention: in step S2, the eye image that camera captures is that eyeball is continuously being transported
Final position image when dynamic.
As a further solution of the present invention: in step S4, determine that the method for the scene opposite with pupil position information is:
Firstly, establish coordinate system to the eyeball at electronic viewfinder, point locating for information flag pupil depending on pupil position；Then it will sit
Mark system maps in the scene in electronic viewfinder, and what is be overlapped with label point is focal position.
As a further solution of the present invention: in step S1, infrared ray is issued by near-infrared light source, and near-infrared light source
Quantity be it is multiple, and around electronic viewfinder arrange.
As further scheme of the invention: in step S1, the quantity of the near-infrared light source is one, and near-infrared
Light source is mounted in camera, and the infrared light that near-infrared light source issues is transmitted through the fiber to the outside of electronic viewfinder.
Compared with prior art, simple and convenient the beneficial effects of the present invention are: it is focused accurately, even if in shooting angle
Or it in the case that camera site is limited, still can accurately be focused.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of camera focus method based on the tracking of pupil position.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
A kind of camera focus method based on the tracking of pupil position, comprising the following steps:
When being shot using camera, human eye all can against camera electronic viewfinder, to observe the scene in electronic viewfinder,
When human eye is at electronic viewfinder, the near infrared ray that near-infrared light source issues then is irradiated on human eye, and it is existing to generate reflection
As, specifically, near-infrared light source here may be mounted at the position of electronic viewfinder, also may be mounted in camera, by
Optical fiber is transmitted at electronic viewfinder position, then is radiated on human eye, but whether being which kind of mode, the quantity of near infrared ray is
It is a plurality of, and be irradiated on human eye with different angle, this just determine be mounted on near-infrared light source at electronic viewfinder be it is multiple,
And the quantity for the near-infrared light source being mounted in camera only needs one；
Later, the camera at camera electronic viewfinder captures eye image, and eye image information is transferred to camera control
Device is analyzed and processed, and the eye image that camera here captures is final position image of the eyeball in continuous movement,
This is because eyeball is movement when focusing, only when finding focus point, just eyeball meeting stop motion, accurate in order to guarantee
Property, so setting focal position for final position；
Due in human eye pupil and iris the reflectivity of near infrared ray is different, reflectivity of the pupil to infrared ray
It is low, and iris is higher to the reflectivity of infrared ray, can make in eye image information, the luminance difference of pupil and iris is big, rainbow
Luminance difference between the color and white of the eye is small, and the position of pupil can be easily defined by the controller of camera；
After pupil position defines, camera controller is according to resulting pupil position information, in electronic viewfinder and pupil
Information opposite scene in hole site is focused；
Then camera controller is completed to focus, and issues prompt information, it is i.e. capable of taking pictures that personnel press shutter.
Embodiment 2
Referring to Fig. 1, the present embodiment is mainly to the process for determining scene opposite with pupil position information in electronic viewfinder
It is illustrated, specific:
Firstly, camera controller establishes coordinate system to the eyeball at electronic viewfinder, and since the window of electronic viewfinder is smaller, limit
The view mode of human eye is determined, it is the same for can be understood as its position when human eye is in every time at the window of electronic viewfinder herein
, then according to defining point locating for resulting pupil position information flag pupil；
And then whole coordinate system is mapped or is thrown in the scene in electronic viewfinder, it is with what label point was overlapped
Focal position.
It should be strongly noted that in the technical program, it is different using reflectivity of each section in human eye to infrared light, come
Pupil position is defined in realization, and then realizes and define to focal position, this is the innovative point of the technical program, focuses quasi-
Really, simple and convenient, even if still can be accurately focused in the case where shooting angle or limited camera site.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of camera focus method based on the tracking of pupil position, which comprises the following steps:
S1, the electronic viewfinder of eye-observation camera, the light source on the outside of electronic viewfinder issues infrared ray to human eye at this time；
S2, the camera at camera electronic viewfinder captures eye image at this time, and eye image information is transferred to camera control
Device processed；
S3, camera controller define pupil position information according to the luminance difference of pupil and iris in eye image obtained；
S4, camera controller according to resulting pupil position information, to it is in electronic viewfinder, with pupil position information phase
Pair scene be focused；
S5, camera controller is completed to focus later, issues prompt information, it is i.e. capable of taking pictures that personnel press shutter.
2. a kind of camera focus method based on the tracking of pupil position according to claim 1, which is characterized in that in step S2,
The eye image that camera captures is final position image of the eyeball in continuous movement.
3. a kind of camera focus method based on the tracking of pupil position according to claim 1, which is characterized in that in step S4,
Determining the method for the scene opposite with pupil position information is: firstly, coordinate system is established to the eyeball at electronic viewfinder, according to
Point locating for pupil position information flag pupil；Then coordinate system is mapped in the scene in electronic viewfinder, with mark point
What position was overlapped is focal position.
4. a kind of camera focus method based on the tracking of pupil position according to claim 1 to 3, which is characterized in that step
In S1, infrared ray is issued by near-infrared light source, and the quantity of near-infrared light source is multiple, and is arranged around electronic viewfinder.
5. a kind of camera focus method based on the tracking of pupil position according to claim 1 to 3, which is characterized in that step
In S1, the quantity of the near-infrared light source is one, and near-infrared light source is mounted in camera, and near-infrared light source issues infrared
Light is transmitted through the fiber to the outside of electronic viewfinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811343972.5A CN109451236A (en) | 2018-11-13 | 2018-11-13 | A kind of camera focus method based on the tracking of pupil position |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811343972.5A CN109451236A (en) | 2018-11-13 | 2018-11-13 | A kind of camera focus method based on the tracking of pupil position |
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| CN109451236A true CN109451236A (en) | 2019-03-08 |
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| CN201811343972.5A Pending CN109451236A (en) | 2018-11-13 | 2018-11-13 | A kind of camera focus method based on the tracking of pupil position |
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Citations (6)
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|---|---|---|---|---|
| CN1119809A (en) * | 1994-07-29 | 1996-04-03 | 佳能株式会社 | Viewpoint detecting device |
| CN103501406A (en) * | 2013-09-16 | 2014-01-08 | 北京智谷睿拓技术服务有限公司 | Image collecting system and image collecting method |
| CN104238239A (en) * | 2014-09-30 | 2014-12-24 | 西安电子科技大学 | System and method for focusing cameras on basis of vision drop points |
| CN105049717A (en) * | 2015-07-02 | 2015-11-11 | 上海闻泰电子科技有限公司 | Pupil control automatic focusing method for digital camera and system |
| CN105138119A (en) * | 2015-08-04 | 2015-12-09 | 湖南七迪视觉科技有限公司 | Stereo vision system with automatic focusing controlled based on human biometrics |
| CN106030458A (en) * | 2013-12-31 | 2016-10-12 | 爱福露恩斯公司 | Systems and methods for gaze-based media selection and editing |
-
2018
- 2018-11-13 CN CN201811343972.5A patent/CN109451236A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119809A (en) * | 1994-07-29 | 1996-04-03 | 佳能株式会社 | Viewpoint detecting device |
| CN103501406A (en) * | 2013-09-16 | 2014-01-08 | 北京智谷睿拓技术服务有限公司 | Image collecting system and image collecting method |
| CN106030458A (en) * | 2013-12-31 | 2016-10-12 | 爱福露恩斯公司 | Systems and methods for gaze-based media selection and editing |
| CN104238239A (en) * | 2014-09-30 | 2014-12-24 | 西安电子科技大学 | System and method for focusing cameras on basis of vision drop points |
| CN105049717A (en) * | 2015-07-02 | 2015-11-11 | 上海闻泰电子科技有限公司 | Pupil control automatic focusing method for digital camera and system |
| CN105138119A (en) * | 2015-08-04 | 2015-12-09 | 湖南七迪视觉科技有限公司 | Stereo vision system with automatic focusing controlled based on human biometrics |
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Application publication date: 20190308 |
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