CN108762511B - Light source control method and device - Google Patents
Light source control method and device Download PDFInfo
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- CN108762511B CN108762511B CN201810615522.0A CN201810615522A CN108762511B CN 108762511 B CN108762511 B CN 108762511B CN 201810615522 A CN201810615522 A CN 201810615522A CN 108762511 B CN108762511 B CN 108762511B
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Abstract
The embodiment of the application discloses a light source control method and a light source control device, whether a first light spot exists in an eye image is judged, wherein the eye image is obtained by shooting an eye of a target object through an image acquisition system, the first light spot is formed by reflecting light generated by a first light source to the image acquisition system through a cornea in the eye, if the first light spot does not exist in the eye image, a second light source can be started, so that the light generated by the second light source is reflected to the image acquisition system through the cornea in the eye to form a second light spot, the second light source and the first light source are respectively positioned on two sides of the image acquisition system, and/or the distance between the second light source and the image acquisition system is smaller than the distance between the first light source and the image acquisition system. The light generated by the second light source can enter the image acquisition system through the reflection of the cornea, so that a second light spot is formed in the eye image, the calculation of the fixation point is performed according to the second light spot and the eye characteristics, and the calculation accuracy of the fixation point is improved.
Description
Technical Field
The present application relates to the field of image processing, and in particular, to a light source control method and device.
Background
The eyeball tracking technology is a technology for obtaining a user fixation point by analyzing the eye movement of the user. The mainstream technology mainly relies on eye images based on infrared frequency bands to analyze eye characteristic information, and then the user fixation point is obtained.
In the prior art, light spots can be formed by reflecting light in an infrared frequency band on a cornea, and a user's fixation point can be determined by combining the position of the light spots in an eye image and eye characteristic information, but when the eye is close to an image acquisition device, the light spots are easily lost, so that the fixation point estimation is inaccurate.
Disclosure of Invention
The embodiment of the application provides a light source control method and device, and aims to solve the problem that in the prior art, when an eye is close to an image acquisition device, the estimation of a fixation point is inaccurate.
The embodiment of the application provides a light source control method, which comprises the following steps:
judging whether a first light spot exists in the eye image or not; the eye image is obtained by shooting the eye of a target object through an image acquisition system, and the first light spot is formed by reflecting light generated by a first light source to the image acquisition system through a cornea in the eye;
if not, a second light source is started so that light generated by the second light source is reflected to the image acquisition system through a cornea in the eye to form a second light spot; the second light source and the first light source are respectively positioned at two sides of the image acquisition system, and/or the distance between the second light source and the image acquisition system is smaller than that between the first light source and the image acquisition system.
Optionally, the first light source includes at least one infrared light source, and the second light source includes at least one infrared light source.
Optionally, the first light source includes a first infrared light source and a second infrared light source, and the first infrared light source and the second infrared light source are respectively disposed on two sides of the image acquisition system;
the second light source comprises a third infrared light source and a fourth infrared light source, and the third infrared light source and the fourth infrared light source are respectively arranged on two sides of the image acquisition system.
Optionally, the image acquisition system comprises at least two image acquisition devices; the eye image is obtained by shooting eyes of a target object through first image acquisition equipment, wherein the focal length of the first image acquisition equipment is smaller than or equal to the focal lengths of other image acquisition equipment except the first image acquisition equipment in the image acquisition system.
Optionally, the method further includes:
and determining the distance between the target object and the image acquisition equipment according to the characteristics of the eye image, and if the distance is greater than or equal to a preset length and the first light source is in a closed state, turning on the first light source.
The embodiment of the application provides a light source control device, includes:
the judging unit is used for judging whether the first light spot exists in the eye image or not; the eye image is obtained by shooting the eye of a target object through an image acquisition system, and the first light spot is formed by reflecting light generated by a first light source to the image acquisition system through a cornea in the eye;
the second light source starting unit is used for starting the second light source if the judgment result of the judgment unit is negative so that light generated by the second light source is reflected to the image acquisition system through the cornea in the eye to form a second light spot; the second light source and the first light source are respectively positioned at two sides of the image acquisition system, and/or the distance between the second light source and the image acquisition system is smaller than that between the first light source and the image acquisition system.
Optionally, the first light source includes at least one infrared light source, and the second light source includes at least one infrared light source.
Optionally, the first light source includes a first infrared light source and a second infrared light source, and the first infrared light source and the second infrared light source are respectively disposed on two sides of the image acquisition system;
the second light source comprises a third infrared light source and a fourth infrared light source, and the third infrared light source and the fourth infrared light source are respectively arranged on two sides of the image acquisition system.
Optionally, the image acquisition system comprises at least two image acquisition devices; the eye image is obtained by shooting eyes of a target object through first image acquisition equipment, wherein the focal length of the first image acquisition equipment is smaller than or equal to the focal lengths of other image acquisition equipment except the first image acquisition equipment in the image acquisition system.
Optionally, the apparatus further comprises:
and the first light source starting unit is used for determining the distance between the target object and the image acquisition equipment according to the characteristics of the eye image, and if the distance is greater than or equal to a preset length and the first light source is in a closed state, the first light source is started.
The embodiment of the application provides a light source control method and device, by judging whether a first light spot exists in an eye image, wherein the eye image is obtained by shooting an eye of a target object through an image acquisition system, the first light spot is formed by reflecting light generated by a first light source to the image acquisition system through a cornea in the eye, if the eye image is judged not to exist the first light spot, a second light source can be started, so that the light generated by the second light source is reflected to the image acquisition system through the cornea in the eye to form a second light spot, wherein the second light source and the first light source are respectively positioned at two sides of the image acquisition system, and/or the distance between the second light source and the image acquisition system is smaller than the distance between the first light source and the image acquisition system. The lost light spots in the eye image are usually caused by that the eye is close to the image acquisition system, at the moment, the light generated by the first light source cannot be reflected by the cornea in the eye or cannot normally enter the image acquisition system after being reflected by the cornea in the eye, so that when the eye image does not have the first light spots, the second light source is started, and because the second light source is close to the image acquisition system, and/or the second light source and the first light source are respectively positioned at two sides of the image acquisition system, the light generated by the second light source can be reflected by the cornea in the smooth eye to enter the image acquisition system, so that the second light spots are formed in the eye image, the calculation of the fixation point is performed according to the second light spots and the characteristics of the eye, and the calculation accuracy of the fixation point is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a first light spot formation provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a first spot loss provided in the embodiment of the present application;
fig. 3 is a flowchart of a light source control method according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a second light spot formation provided in the embodiment of the present application;
fig. 5 is a schematic structural diagram of a light source and an image acquisition system provided in an embodiment of the present application;
fig. 6 is a block diagram of a light source control device according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The inventor of the application finds that, in the prior art, light in an infrared frequency band is reflected on a cornea and enters the image acquisition equipment, so that the image acquisition equipment shoots eyes to obtain an eye image including light spots, and the user fixation point can be determined by combining the position of the light spots and the characteristic information of the eyes. Referring to fig. 1, a first light source 101 generates infrared light, forms a reflection point 103 on a cornea 102, and enters an image acquisition system 104, so that a first light spot exists in an eye image captured by the image acquisition system 104, and the position of the first light spot in the eye image can be referred to the position of the reflection point 103 on the cornea 102. The user's gaze point may be determined from the position of the first spot and characteristic information of the eye, which may be, for example, the position of the pupil center 106 of the eye.
However, when the eye is close to the image capturing device, as shown in fig. 2, the first light source 101 generates infrared light, a reflection point 103 is formed on the cornea 102, and the direction of the reflected light and the direction of the incident light are related to the curvature center 105 of the cornea 102, at this time, since the reflection angle α is large, where the reflection angle α is an included angle between the connection line (shown by a dotted line) between the curvature center 105 and the reflection point 103 and the reflected light (shown by a bold and solid line) corresponding to the first light source 101, the reflected light cannot smoothly enter the image capturing device, and therefore, the eye image captured by the image capturing device does not include the first light spot, that is, the first light spot is lost. When the line of sight direction of the user deviates from the set position of the first light source 101, the light generated by the first light source 101 cannot be irradiated on the cornea 102 in the eye, and reflected light cannot be generated, resulting in the loss of the first spot. The accuracy of estimating the user's gaze point from an eye image without the first spot is not high.
In order to solve the above technical problem, an embodiment of the present application provides a light source control method and apparatus, where whether a first light spot exists in an eye image is determined, where the eye image is obtained by shooting an eye of a target object through an image acquisition system, the first light spot is formed by reflecting light generated by a first light source to the image acquisition system through a cornea in the eye, and if it is determined that the first light spot does not exist in the eye image, a second light source may be turned on so that light generated by the second light source is reflected to the image acquisition system through the cornea in the eye to form a second light spot, where the second light source and the first light source are respectively located at two sides of the image acquisition system, and/or a distance between the second light source and the image acquisition system is smaller than a distance between the first light source and the image acquisition system. The lost light spots in the eye image are usually caused by that the eye is close to the image acquisition system, at the moment, the light generated by the first light source cannot be reflected by the cornea in the eye or cannot normally enter the image acquisition system after being reflected by the cornea in the eye, so that when the eye image does not have the first light spots, the second light source is started, and because the second light source is close to the image acquisition system, and/or the second light source and the first light source are respectively positioned at two sides of the image acquisition system, the light generated by the second light source can smoothly enter the image acquisition system through the cornea in the eye in a reflection manner, so that the second light spots are formed in the eye image, the calculation of the fixation point is performed according to the second light spots and the characteristics of the eye, and the calculation accuracy of the fixation point is improved.
Various non-limiting embodiments of the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 3, a flowchart of a light source control method provided in an embodiment of the present application is shown, where the method includes the following steps.
S101, judging whether the first facula exists in the eye image, and if not, executing S102.
The eye image is obtained by shooting the eyes of the target object through an image acquisition system, the image acquisition system can comprise at least one image acquisition device, the image acquisition device can be an infrared camera, an infrared video camera and the like, and when the eyes of the target object are irradiated by light in an infrared frequency band, the image acquisition device can acquire light information in the infrared frequency band.
As shown in fig. 1, the first light source 101 generates infrared light, and the infrared light is reflected by a reflection point 103 on the cornea 102 and enters the image acquisition system 104, so that the eye image captured by the image acquisition system 104 has a first light spot, that is, in the eye image, a position corresponding to the reflection point 103 is a bright point, that is, the first light spot.
The first light source 101 includes at least one infrared light source, such as an infrared light emitting diode, an infrared laser with a small power, or another light source capable of generating infrared light, and is configured to illuminate the face and eyes of the target object, and the infrared light may be reflected into the image capturing system 104 through the cornea 102, so that a first light spot is formed in an eye image captured by the image capturing system.
When the eye is close to the image acquisition system, the reflection angle α of the light generated by the first light source 101 at the cornea 102 is large, the light corresponding to the first light source 101 is reflected by the cornea 102 and cannot enter the image acquisition system, and the image of the eye captured by the image acquisition system 104 does not have a first light spot, so that S102 can be executed.
And S102, turning on a second light source to form a second light spot.
As a possible implementation, referring to fig. 4, the second light source 107 may be on the same side of the image acquisition system 104 as the first light source 101, and the distance between the second light source 107 and the image acquisition system 104 may be smaller than the distance between the first light source 101 and the image acquisition system.
The second light source 107 includes at least one infrared light source, such as an infrared light emitting diode, an infrared laser with a small power, or another light source capable of generating infrared light, and is configured to illuminate the face and eyes of the target object, so that the image capturing system 104 can capture the eyes of the target object and the light spots formed by the reflection of the infrared light on the cornea, and acquire feature information of the eyes of the target object.
Since the distance between the second light source 107 and the image capturing system 104 is closer, the reflection angle β of the infrared light generated by the second light source 107 reflected on the reflection point 103 is smaller than the reflection angle α of the infrared light generated by the first light source 101 reflected on the reflection point 103, where the reflection angle β is an included angle between a connection line (shown by a thin dotted line) between the center of curvature 105 and the reflection point 103 and a reflection light (shown by a thick dotted line) corresponding to the second light source 107, so that the light corresponding to the second light source 107 is reflected by the cornea 102 and can enter the image capturing system 104, so that a second light spot exists in an eye image captured by the image capturing system 104 when the second light source 107 irradiates the eye of the target object, and the gaze point of the target object can be estimated according to the position of the second light spot and the feature information of the eye.
In addition, as another possible implementation, the second light source 107 and the first light source 101 may also be respectively located at two sides of the image capturing system 104 (not shown). Specifically, a plane passing through the image acquisition system 104 and perpendicular to a straight line where the first light source 101 and the image acquisition system are located may be constructed, the plane dividing the space into two sides of the image acquisition system 104, the first light source 101 may be located at a first side of the image acquisition system 104, and the second light source 107 may be located at a second side of the image acquisition system 104.
In general, in the case of the first light spot being lost, generally, when the target object is closer to the image capturing system 104 and the line of sight of the target object is located at a point away from the setting position of the first light source 101, the cornea 102 in the eye of the target object deviates from the setting position of the first light source 101 along with the direction of the line of sight, and the light generated by the first light source 101 located on the first side of the image capturing system 104 cannot directly irradiate on the cornea 102 in the eye of the target object, so that no reflected light appears in the image capturing system 104, which causes the first light spot to be lost. If the second light source 107 arranged on the second side of the image acquisition system 104 is turned on, and the second light source 107 and the first light source 101 are positioned on the two sides of the image acquisition system, the cornea 102 in the eye of the target object deviates to the arrangement position of the second light source 107 along with the sight line direction, light generated by the second light source 107 can directly irradiate on the cornea 102 in the eye of the target object and enters the image acquisition system 104 through reflection, at this time, a second light spot appears in the eye image, the calculation of the fixation point is conveniently carried out according to the second light spot and the eye characteristics, and the accuracy of the calculation of the fixation point is improved.
When the second light source 107 and the first light source 101 are respectively located at two sides of the image capturing system 104, a distance between the second light source 107 and the image capturing system 104 may be smaller than a distance between the first light source 101 and the image capturing system 104, and at this time, light of the second light source 107 may directly irradiate on the cornea 102 in the eye of the target object, and the reflection angle is small, so that a second light spot appears in the eye image.
When the second light source 107 and the first light source 101 are respectively located at two sides of the image capturing system 104, the distance between the second light source 107 and the image capturing system 104 may also be greater than or equal to the distance between the first light source 101 and the image capturing system 104, at this time, the cornea 102 in the eye of the target object is biased to the setting position of the second light source 107 along with the visual line direction, the light generated by the second light source 107 may directly irradiate on the cornea 102 in the eye of the target object, and enter the image capturing system 104 through reflection, so that a second light spot appears in the eye image.
In specific implementation, referring to fig. 5, a schematic structural diagram of the light source and the image capturing system 104 provided in the embodiment of the present application is shown, where the image capturing system 104 may include a first image capturing device 1041 and a second image capturing device 1042, where an eye image may be obtained by shooting an eye of a target object by the first image capturing device 1041, where a focal length of the first image capturing device 1041 is less than or equal to a focal length of another image capturing device in the image capturing system 104 except the first image capturing device 1041, for example, the focal length of the first image capturing device 1041 is less than or equal to a focal length of the second image capturing device 1042.
The first light source 101 may include a first infrared light source 1011 and a second infrared light source 1012, wherein the first infrared light source 1011 and the second infrared light source 1012 are respectively disposed at two sides of the image capturing system 104, and correspondingly, the second light source 107 may include a third infrared light source 1071 and a fourth infrared light source 1072, and the third infrared light source 1071 and the fourth infrared light source 1072 are respectively disposed at two sides of the image capturing system 104.
When the first light source 101 is operated, the first infrared light source 1011 and the second infrared light source 1012 may be operated simultaneously, or only one of them may be operated, and when the second light source 107 is operated, the third infrared light source 1071 and the fourth infrared light source 1072 may be operated simultaneously, or only one of them may be operated. The first light source 101 may or may not be turned off at the same time as the second light source 107 is turned on.
When a first light spot formed by the first infrared light source 1011 reflected by the cornea 102 is lost, the third infrared light source 1071 on the same side of the first infrared light source 1011 may be turned on, or the fourth infrared light source 1072 on a different side of the first infrared light source 1011 may be turned on, where a distance between the fourth infrared light source 1072 and the first image capturing device 1041 may be smaller than a distance between the first infrared light source 1011 and the first image capturing device 1041, or may be greater than or equal to a distance between the first infrared light source 1011 and the first image capturing device 1041; when the first spot formed by the reflection of the second infrared light source 1012 by the cornea 102 is lost, the fourth infrared light source 1072 on the same side as the second infrared light source 1012 may be turned on, or the third infrared light source 1071 on a different side from the second infrared light source 1012 may be turned on, where a distance between the third infrared light source 1071 and the first image capturing device 1041 may be smaller than a distance between the second infrared light source 1012 and the first image capturing device 1041, or may be greater than or equal to a distance between the second infrared light source 1012 and the first image capturing device 1041.
In this embodiment of the application, a distance between the target object and the image capturing system may also be determined according to features of the eye image, specifically, the distance between the target object and the image capturing system may be determined by a pupil diameter in the eye image, the distance between the target object and the image capturing system may also be determined by a distance between pupils in the eye image, and the distance may also be determined by features of other eye images, which is not exemplified herein.
For example, if the pupil diameter is smaller than or equal to the preset diameter, it indicates that the distance between the target object and the image capturing system is relatively long, and at this time, it may be determined that the distance between the target object and the image capturing system is greater than or equal to the preset length, or if the distance between the pupils is smaller than or equal to the preset distance, it may be determined that the distance between the target object and the image capturing system is greater than or equal to the preset length.
When the distance between the target object and the image acquisition system is greater than or equal to the preset length, if the first light source 101 is in the off state, the first light source 101 may be turned on.
The embodiment of the application provides a light source control method, whether a first light spot exists in an eye image is judged, wherein the eye image is obtained by shooting an eye of a target object through an image acquisition system, the first light spot is formed by reflecting light generated by a first light source to the image acquisition system through a cornea in the eye, if the eye image is judged to be free of the first light spot, a second light source can be started, so that the light generated by the second light source is reflected to the image acquisition system through the cornea in the eye to form a second light spot, the second light source and the first light source are respectively positioned on two sides of the image acquisition system, and/or the distance between the second light source and the image acquisition system is smaller than the distance between the first light source and the image acquisition system. The lost light spots in the eye image are usually caused by that the eye is close to the image acquisition system, at the moment, the light generated by the first light source cannot be reflected by the cornea in the eye or cannot normally enter the image acquisition system after being reflected by the cornea in the eye, so that when the eye image does not have the first light spots, the second light source is started, and because the second light source is close to the image acquisition system, and/or the second light source and the first light source are respectively positioned at two sides of the image acquisition system, the light generated by the second light source can smoothly enter the image acquisition system through the cornea in the eye in a reflection manner, so that the second light spots are formed in the eye image, the calculation of the fixation point is performed according to the second light spots and the characteristics of the eye, and the calculation accuracy of the fixation point is improved.
Based on the light source control method provided by the above embodiments, the embodiments of the present application further provide a light source control device, and the working principle of the light source control device is described in detail below with reference to the accompanying drawings.
Referring to fig. 6, this figure is a block diagram of a light source control apparatus according to an embodiment of the present application, where the apparatus includes:
a judging unit 110, configured to judge whether a first light spot exists in the eye image; the eye image is obtained by shooting the eye of a target object through an image acquisition system, and the first light spot is formed by reflecting light generated by a first light source to the image acquisition system through a cornea in the eye;
the second light source starting unit 120 is configured to start the second light source if the determination result of the determining unit is negative, so that light generated by the second light source is reflected to the image acquisition system through a cornea in the eye to form a second light spot; the distance between the second light source and the image acquisition system is smaller than the distance between the first light source and the image acquisition system.
Optionally, the first light source includes at least one infrared light source, and the second light source includes at least one infrared light source.
Optionally, the first light source includes a first infrared light source and a second infrared light source, and the first infrared light source and the second infrared light source are respectively disposed on two sides of the image acquisition system;
the second light source comprises a third infrared light source and a fourth infrared light source, and the third infrared light source and the fourth infrared light source are respectively arranged on two sides of the image acquisition system.
Optionally, the image acquisition system comprises at least two image acquisition devices; the eye image is obtained by shooting eyes of a target object through first image acquisition equipment, wherein the focal length of the first image acquisition equipment is smaller than or equal to the focal lengths of other image acquisition equipment except the first image acquisition equipment in the image acquisition system.
Optionally, the apparatus further comprises:
and the first light source starting unit is used for determining the distance between the target object and the image acquisition equipment according to the characteristics of the eye image, and if the distance is greater than or equal to a preset length and the first light source is in a closed state, the first light source is started.
The embodiment of the application provides a light source control device, through judging whether there is first facula in the eye image, wherein the eye image is shot through image acquisition system to the eyes of target object and is obtained, first facula is that the light that first light source produced reflects formation in image acquisition system through the cornea in the eyes, if judge that there is not first facula in the eye image, can open the second light source, so that the light that the second light source produced reflects formation second facula in image acquisition system through the cornea in the eyes, wherein second light source and first light source are located the both sides of image acquisition system respectively, and/or, the distance of second light source and image acquisition system is less than the distance of first light source and image acquisition system. The lost light spots in the eye image are usually caused by that the eye is close to the image acquisition system, at the moment, the light generated by the first light source cannot be reflected by the cornea in the eye or cannot normally enter the image acquisition system after being reflected by the cornea in the eye, so that when the eye image does not have the first light spots, the second light source is started, and because the second light source is close to the image acquisition system, and/or the second light source and the first light source are respectively positioned at two sides of the image acquisition system, the light generated by the second light source can smoothly enter the image acquisition system through the cornea in the eye in a reflection manner, so that the second light spots are formed in the eye image, the calculation of the fixation point is performed according to the second light spots and the characteristics of the eye, and the calculation accuracy of the fixation point is improved.
When introducing elements of various embodiments of the present application, the articles "a," "an," "the," and "said" are intended to mean that there are one or more of the elements. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements other than the listed elements.
It should be noted that, as one of ordinary skill in the art would understand, all or part of the processes of the above method embodiments may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when executed, the computer program may include the processes of the above method embodiments. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus embodiment, since it is substantially similar to the method embodiment, it is relatively simple to describe, and reference may be made to some descriptions of the method embodiment for relevant points. The above-described apparatus embodiments are merely illustrative, and the units and modules described as separate components may or may not be physically separate. In addition, some or all of the units and modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (10)
1. A method of controlling a light source, the method comprising:
judging whether a first light spot exists in the eye image or not; the eye image is obtained by shooting the eye of a target object through an image acquisition system, and the first light spot is formed by reflecting light generated by a first light source to the image acquisition system through a cornea in the eye;
if not, a second light source is started so that light generated by the second light source is reflected to the image acquisition system through a cornea in the eye to form a second light spot; the second light source and the first light source are respectively positioned at two sides of the image acquisition system, and/or the distance between the second light source and the image acquisition system is smaller than that between the first light source and the image acquisition system.
2. The method of claim 1, wherein the first light source comprises at least one infrared light source and the second light source comprises at least one infrared light source.
3. The method of claim 2, wherein the first light source comprises a first infrared light source and a second infrared light source, the first infrared light source and the second infrared light source being respectively disposed on two sides of the image acquisition system;
the second light source comprises a third infrared light source and a fourth infrared light source, and the third infrared light source and the fourth infrared light source are respectively arranged on two sides of the image acquisition system.
4. The method according to any one of claims 1 to 3, wherein the image acquisition system comprises at least two image acquisition devices; the eye image is obtained by shooting eyes of a target object through first image acquisition equipment, wherein the focal length of the first image acquisition equipment is smaller than or equal to the focal lengths of other image acquisition equipment except the first image acquisition equipment in the image acquisition system.
5. A method according to any one of claims 1 to 3, characterized in that the method further comprises:
and determining the distance between the target object and the image acquisition equipment according to the characteristics of the eye image, and if the distance is greater than or equal to a preset length and the first light source is in a closed state, turning on the first light source.
6. A light source control apparatus, the apparatus comprising:
the judging unit is used for judging whether the first light spot exists in the eye image or not; the eye image is obtained by shooting the eye of a target object through an image acquisition system, and the first light spot is formed by reflecting light generated by a first light source to the image acquisition system through a cornea in the eye;
the second light source starting unit is used for starting the second light source if the judgment result of the judgment unit is negative so that light generated by the second light source is reflected to the image acquisition system through the cornea in the eye to form a second light spot; the second light source and the first light source are respectively positioned at two sides of the image acquisition system, and/or the distance between the second light source and the image acquisition system is smaller than that between the first light source and the image acquisition system.
7. The apparatus of claim 6, wherein the first light source comprises at least one infrared light source and the second light source comprises at least one infrared light source.
8. The apparatus of claim 7, wherein the first light source comprises a first infrared light source and a second infrared light source, and the first infrared light source and the second infrared light source are respectively disposed at two sides of the image acquisition system;
the second light source comprises a third infrared light source and a fourth infrared light source, and the third infrared light source and the fourth infrared light source are respectively arranged on two sides of the image acquisition system.
9. The apparatus according to any one of claims 6 to 8, wherein the image acquisition system comprises at least two image acquisition devices; the eye image is obtained by shooting eyes of a target object through first image acquisition equipment, wherein the focal length of the first image acquisition equipment is smaller than or equal to the focal lengths of other image acquisition equipment except the first image acquisition equipment in the image acquisition system.
10. The apparatus of any one of claims 6 to 8, further comprising:
and the first light source starting unit is used for determining the distance between the target object and the image acquisition equipment according to the characteristics of the eye image, and if the distance is greater than or equal to a preset length and the first light source is in a closed state, the first light source is started.
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| PCT/CN2019/077213 WO2019237772A1 (en) | 2018-06-14 | 2019-03-06 | Light source control method and apparatus |
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| CN206505382U (en) * | 2017-02-06 | 2017-09-19 | 上海青研科技有限公司 | Binocular stereo vision ophthalmogyric device in a kind of VR/AR |
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