CN108742512B - Eye imaging method and device - Google Patents
Eye imaging method and device Download PDFInfo
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- CN108742512B CN108742512B CN201810352108.5A CN201810352108A CN108742512B CN 108742512 B CN108742512 B CN 108742512B CN 201810352108 A CN201810352108 A CN 201810352108A CN 108742512 B CN108742512 B CN 108742512B
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- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/107—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining the shape or measuring the curvature of the cornea
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Abstract
The invention provides an eye imaging method and device, and the method comprises the following steps: acquiring an angle consolidation picture obtained by shooting human eyes by a zoom image acquisition device and a first position of a focusing lens during imaging; judging whether the imaging angle of the angle consolidation picture meets a preset condition or not; when the angle consolidation picture meets the preset condition, adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a second position of the focusing lens when the cornea image and the cornea are imaged, and adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain a third position of the focusing lens when the iris image and the iris are imaged; the distance between the first position and the second position is calculated to obtain first distance information, the distance between the first position and the third position is calculated to obtain second distance information, the problem that the eye imaging process cannot be completed in places except a hospital in the prior art is solved, and the technical effect that the eye imaging process can be completed in places except the hospital is achieved.
Description
Technical Field
The invention relates to the technical field of imaging, in particular to an eye imaging method and device.
Background
Telemedicine is the exchange of medical clinical data and expert opinions of patients in two places by means of information and telecommunication technology. The remote medical consultation establishes brand-new contact between medical experts and patients, so that the patients can receive consultation of the remote experts in situ and in the original hospital and can be treated and nursed under the guidance of the remote experts, and a great amount of time and money can be saved for doctors and the patients.
When a patient wants to diagnose and treat an eye disease by telemedicine, a remote expert is provided with image data of a cornea and position information at the time of imaging the cornea, and image data of an iris and position information at the time of imaging the iris. The specialist in the remote place can consult and provide treatment opinions for the patient according to the image data of the cornea and the position information during imaging of the cornea, and the image data of the iris and the position information during imaging of the iris. In the prior art, the imaging process of the cornea and the iris needs to be completed in a hospital, and a patient needs to go to the hospital to image the cornea and the iris personally, so that the problem that the imaging process of the eye cannot be completed in other places except the hospital is caused.
Disclosure of Invention
In view of the above, the present invention is directed to an eye imaging method and apparatus to alleviate the technical problem of the prior art that the eye imaging process cannot be performed in other places except for the hospital.
In a first aspect, an embodiment of the present invention provides an eye imaging method, where the method is applied to a mobile terminal, where a zoom image acquisition device is disposed in the mobile terminal, and the method includes:
acquiring an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of a focusing lens during angle scleral imaging;
judging whether the imaging angle of the angle consolidation edge picture meets a preset condition or not;
when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging, and adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain an iris image with the maximum image definition and a third position of the focusing lens during iris imaging;
and calculating the distance between the first position and the second position to obtain first distance information, and calculating the distance between the first position and the third position to obtain second distance information.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the method further includes:
respectively judging whether the definition of the cornea image and the definition of the iris image meet a preset first condition;
when the definition of the cornea image meets the first condition, saving the cornea image and the first distance information;
and/or saving the iris image and the second distance information when the definition of the iris image meets the first condition.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the method further includes:
acquiring light ray information of the current environment of the mobile terminal, which is acquired by the zooming image acquisition device;
judging whether the light ray information exceeds a preset light ray threshold value or not;
and when the light ray information does not exceed the light ray threshold value, starting a flash lamp of the mobile terminal.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the determining whether the imaging angle of the angle scleral frame meets a preset condition includes:
extracting an edge image of the angle scleral image to obtain an angle scleral edge image;
connecting line segments between any two points on the corner edge image to obtain a plurality of connecting line segments;
determining a length value of a line segment with the longest length and a midpoint of the line segment with the longest length in the plurality of connected line segments;
and when the proportion of the point of which the distance from the point on the angle scleral edge image to the midpoint is equal to half of the length value exceeds a preset threshold value, determining that the imaging angle of the angle scleral edge image meets a preset condition.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the zoom image capture device includes: a single zoom camera;
when the formation of image angle of angle sclera reason picture satisfies preset condition, adjust zoom image acquisition device focus the lens with distance between the people's eye, obtain the cornea image that the image definition is the biggest and focus the second position of lens when the cornea formation of image, and, adjust zoom image acquisition device focus the lens with distance between the people's eye, the third position of focusing the lens when obtaining the iris image that the image definition is the biggest and iris formation of image includes:
when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between a focusing lens of the single zoom camera and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging;
and adjusting the distance between the focusing lens of the single zoom camera and the human eyes to obtain the iris image with the maximum image definition and the third position of the focusing lens during iris imaging.
With reference to the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the zoom image capture device includes: a dual zoom camera; the binary zoom camera includes: a first zoom camera and a second zoom camera;
when the formation of image angle of angle sclera reason picture satisfies preset condition, adjust zoom image acquisition device focus the lens with distance between the people's eye, obtain the cornea image that the image definition is the biggest and focus the second position of lens when the cornea formation of image, and, adjust zoom image acquisition device focus the lens with distance between the people's eye, the third position of focusing the lens when obtaining the iris image that the image definition is the biggest and iris formation of image includes:
when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between a focusing lens of the first zoom camera and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging;
and adjusting the distance between the focusing lens of the second zoom camera and the human eyes to obtain the iris image with the maximum image definition and the third position of the focusing lens during iris imaging.
With reference to the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the zoom image capture device includes: a three-zoom camera;
the method further comprises the following steps: when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a lens image with the maximum image definition and a fourth position of the focusing lens during lens imaging;
and calculating the distance between the first position and the fourth position to obtain third distance information.
With reference to the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, wherein the determining whether the sharpness of the cornea image satisfies a preset first condition includes:
acquiring the gray value of each pixel point in the cornea image;
calculating a first difference square sum of gray values of two pixel points which are different by two units at any line in the cornea image by using a preset Brenner gradient method;
when the first difference sum is greater than a preset first reference threshold, determining that the definition of the cornea image meets the first condition.
With reference to the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where determining whether the sharpness of the iris image meets a preset first condition includes:
acquiring the gray value of each pixel point in the iris image;
calculating a second difference square sum of gray values of two pixel points which are different by two units at any line in the iris image by using the Brenner gradient method;
and when the second difference sum is larger than a preset second reference threshold value, determining that the definition of the iris image meets the first condition.
In a second aspect, embodiments of the present invention also provide an eye imaging apparatus, including: the device comprises an acquisition module, a judgment module, an imaging module and a calculation module;
the acquisition module is used for acquiring an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of the focusing lens during angle scleral imaging;
the judging module is used for judging whether the imaging angle of the angle scleral edge picture meets a preset condition or not;
the imaging module is used for adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging when the imaging angle of the angle scleral edge picture meets a preset condition, and adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain an iris image with the maximum image definition and a third position of the focusing lens during iris imaging;
the calculation module is configured to calculate a distance between the first location and the second location to obtain first distance information, and calculate a distance between the first location and the third location to obtain second distance information.
The embodiment of the invention has the following beneficial effects: the eye imaging method provided by the embodiment of the invention is applied to a mobile terminal, wherein a zoom image acquisition device is arranged in the mobile terminal, and the method comprises the following steps: acquiring an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of a focusing lens during angle scleral imaging; judging whether the imaging angle of the angle consolidation edge picture meets a preset condition or not; when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging, and adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain an iris image with the maximum image definition and a third position of the focusing lens during iris imaging; and calculating the distance between the first position and the second position to obtain first distance information, and calculating the distance between the first position and the third position to obtain second distance information.
Therefore, when a patient wants to perform eye disease diagnosis and treatment by remote medical treatment, a first position of an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of a focusing lens during angle scleral imaging can be acquired by the zoom image acquisition device arranged in a mobile terminal, then whether an imaging angle of the angle scleral image meets a preset condition or not is judged, when the imaging angle of the angle scleral image meets the preset condition, a distance between the focusing lens of the zoom image acquisition device and the human eyes is adjusted, a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging are obtained, and a distance between the focusing lens of the zoom image acquisition device and the human eyes is adjusted, an iris image with the maximum image definition and a third position of the focusing lens during iris imaging are obtained, so that the cornea image and the iris image are obtained, finally, the distance between the first position and the second position is calculated to obtain first distance information, the distance between the first position and the third position is calculated to obtain second distance information, so that first distance information corresponding to the cornea image and second distance information corresponding to the iris image are obtained, the patient can send the cornea image, the first distance information corresponding to the cornea image, the iris image and the second distance information corresponding to the iris image to a remote expert, the remote expert can consult and provide treatment opinions for the patient according to the received cornea image, the first distance information corresponding to the cornea image, the iris image and the second distance information corresponding to the iris image, the problem that the patient needs to go to a hospital to carry out cornea and iris imaging in person is solved, and the problem that an eye imaging process in the prior art cannot be completed in other places except the hospital is solved, the technical effect that the eye imaging process can be completed in other places except a hospital is achieved, and the convenience and the efficiency of the eye imaging process are improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method of imaging an eye provided by an embodiment of the invention;
FIG. 2 is a flowchart of step S102 in FIG. 1;
FIG. 3 is a first flowchart of step S103 in FIG. 1;
fig. 4 is a second flowchart of step S103 in fig. 1.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
At present, telemedicine is the exchange of clinical information and expert opinions of patients in two places by means of information and telecommunication technology. The remote medical consultation establishes brand-new contact between medical experts and patients, so that the patients can receive consultation of the remote experts in situ and in the original hospital and can be treated and nursed under the guidance of the remote experts, and a great amount of time and money can be saved for doctors and the patients.
When a patient wants to diagnose and treat an eye disease by telemedicine, a remote expert is provided with image data of a cornea and position information at the time of imaging the cornea, and image data of an iris and position information at the time of imaging the iris. The specialist in the remote place can consult and provide treatment opinions for the patient according to the image data of the cornea and the position information during imaging of the cornea, and the image data of the iris and the position information during imaging of the iris. In the prior art, the imaging process of the cornea and the iris needs to be completed in a hospital, and a patient needs to go to the hospital to perform imaging of the cornea and the iris in person, so that the problem that the imaging process of the eye cannot be completed in other places except the hospital is caused.
To facilitate understanding of the present embodiment, a detailed description will be first given of an eye imaging method disclosed in the present embodiment, the method is applied to a mobile terminal in which a zoom image capture device is disposed, and as shown in fig. 1, the eye imaging method may include the following steps.
Illustratively, the mobile terminal may be a slit-lamp camera system.
For example, the zoom image capturing device may be a single zoom camera, a double zoom camera, or a triple zoom camera.
Step S101, obtaining an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of a focusing lens during angle scleral imaging.
For example, since the edge of the corner sclera of the human eye is easily identified, the image of the corner sclera obtained by the zoom image capture device capturing the human eye is obtained first. And judging whether the imaging angle of human eyes is proper or not by using the obtained angle scleral picture.
And step S102, judging whether the imaging angle of the angle consolidation picture meets a preset condition.
Illustratively, as shown in fig. 2, step S102 may include the following steps.
Step S201, extracting the edge image of the angle scleral image to obtain the angle scleral edge image.
Step S202, connecting line segments between any two points on the edge image of the corner consolidation edge to obtain a plurality of connecting line segments.
Step S203, determining a length value of the line segment with the longest length and a midpoint of the line segment with the longest length in the plurality of connected line segments.
Step S204, when the proportion of the points of which the distance from the points on the angle scleral edge image to the midpoint is equal to half of the length value exceeds a preset threshold, determining that the imaging angle of the angle scleral edge image meets a preset condition.
Illustratively, the preset threshold may be 90%, or may be 95%, or may be 98%. The preset threshold is 95% for example. And when the proportion of the distance from the point on the angle scleral edge image to the point with the length value being half to the middle point exceeds 95%, determining that the imaging angle of the angle scleral edge image meets a preset condition. The cornea imaging and iris imaging can now continue at the present imaging angles.
And S103, when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging, and adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain an iris image with the maximum image definition and a third position of the focusing lens during iris imaging.
Illustratively, the zoom image capture device comprises: the single zoom camera, as shown in fig. 3, step S103 may include the following steps.
Step S301, when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between the focusing lens of the single zoom camera and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging.
For example, in the process of adjusting the distance between the focusing lens of the single zoom camera and the human eye, the focusing lens of the single zoom camera may be moved in a direction away from the human eye according to a first preset distance, and then the distance between the focusing lens and the human eye is adjusted, so as to obtain a cornea image with the largest image definition and a second position of the focusing lens during imaging of the cornea. The first preset distance may be 3 mm. Typically, the distance between the corneoscleral edge and the cornea of the human eye is 3 mm. This has the effect of increasing the efficiency of the corneal imaging procedure.
Step S302, adjusting the distance between the focusing lens of the single zoom camera and the human eyes to obtain the iris image with the maximum image definition and the third position of the focusing lens during iris imaging.
For example, in the process of adjusting the distance between the focusing lens of the single zoom camera and the human eyes, the focusing lens may be moved to the first position, then the focusing lens of the single zoom camera is moved toward the human eyes according to a second preset distance, and finally the distance between the focusing lens and the human eyes is adjusted to obtain the iris image with the maximum image definition and the third position of the focusing lens during iris imaging. The second predetermined distance may be 0.5 mm. Typically, the distance between the angle scleral edge of the human eye and the iris is 0.5 mm. This has the effect that the efficiency of the iris imaging process can be improved.
Illustratively, the zoom image capture device comprises: a dual zoom camera; the binary zoom camera includes: the first and second zoom cameras, as shown in fig. 4, step S103 may include the following steps.
Step S401, when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between the focusing lens of the first zoom camera and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging.
For example, in the process of adjusting the distance between the focusing lens of the first zoom camera and the human eye, the focusing lens of the first zoom camera may be moved in a direction away from the human eye according to a first preset distance, and then the distance between the focusing lens and the human eye is adjusted, so as to obtain a cornea image with the largest image definition and a second position of the focusing lens during imaging of the cornea. The first preset distance may be 3 mm.
Step S402, adjusting the distance between the focusing lens of the second zoom camera and the human eyes to obtain the iris image with the maximum image definition and the third position of the focusing lens during iris imaging.
For example, in the process of adjusting the distance between the focusing lens of the second zoom camera and the human eyes, the focusing lens of the second zoom camera may be moved to a direction close to the human eyes according to a second preset distance, and then the distance between the focusing lens and the human eyes is adjusted to obtain an iris image with the maximum image definition and a third position of the focusing lens during iris imaging. The second predetermined distance may be 0.5 mm.
Illustratively, the zoom image capture device comprises: a triple zoom camera, the method further comprising: when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a lens image with the maximum image definition and a fourth position of the focusing lens during lens imaging; and calculating the distance between the first position and the fourth position to obtain third distance information.
Illustratively, the lens image may be an anterior lens surface image, an anterior lens capsule image, an anterior intraocular lens surface image, an anterior intraocular lens capsule image, a clear lenticular opacity image, a posterior lens surface image, a posterior intraocular lens surface image, a posterior lens capsule image, or a posterior intraocular lens capsule image.
Step S104, calculating the distance between the first position and the second position to obtain first distance information, and calculating the distance between the first position and the third position to obtain second distance information.
Illustratively, a remote specialist consults and provides treatment opinions for a patient, requiring both a corneal image and an iris image of the patient, as well as first distance information corresponding to the corneal image and second distance information corresponding to the iris image of the patient.
Illustratively, a specialist at a remote location performs a consultation on a patient and provides a treatment opinion, requiring both a cornea image, an iris image, and a lens image of the patient, and first distance information corresponding to the cornea image, second distance information corresponding to the iris image, and third distance information corresponding to the lens image of the patient.
Illustratively, the eye imaging method can obtain a plurality of images simultaneously, so that the photographing efficiency is improved, and the eye imaging method is suitable for popularization in a wide range and primary hospitals.
Illustratively, the embodiment of the invention can solve the problem that the anterior segment slit lamp photographing system can only acquire the image of one eyeball part at a time, thereby improving the photographing speed of the anterior segment slit lamp and the photographing efficiency.
In the embodiment of the present invention, the eye imaging method provided in the embodiment of the present invention is applied to a mobile terminal, in which a zoom image acquisition device is disposed, and the method includes: acquiring an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of a focusing lens during angle scleral imaging; judging whether the imaging angle of the angle consolidation edge picture meets a preset condition or not; when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging, and adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain an iris image with the maximum image definition and a third position of the focusing lens during iris imaging; and calculating the distance between the first position and the second position to obtain first distance information, and calculating the distance between the first position and the third position to obtain second distance information.
Therefore, when a patient wants to perform eye disease diagnosis and treatment by remote medical treatment, a first position of an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of a focusing lens during angle scleral imaging can be acquired by the zoom image acquisition device arranged in a mobile terminal, then whether an imaging angle of the angle scleral image meets a preset condition or not is judged, when the imaging angle of the angle scleral image meets the preset condition, a distance between the focusing lens of the zoom image acquisition device and the human eyes is adjusted, a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging are obtained, and a distance between the focusing lens of the zoom image acquisition device and the human eyes is adjusted, an iris image with the maximum image definition and a third position of the focusing lens during iris imaging are obtained, so that the cornea image and the iris image are obtained, finally, the distance between the first position and the second position is calculated to obtain first distance information, the distance between the first position and the third position is calculated to obtain second distance information, so that first distance information corresponding to the cornea image and second distance information corresponding to the iris image are obtained, the patient can send the cornea image, the first distance information corresponding to the cornea image, the iris image and the second distance information corresponding to the iris image to a remote expert, the remote expert can consult and provide treatment opinions for the patient according to the received cornea image, the first distance information corresponding to the cornea image, the iris image and the second distance information corresponding to the iris image, the problem that the patient needs to go to a hospital to carry out cornea and iris imaging in person is solved, and the problem that an eye imaging process in the prior art cannot be completed in other places except the hospital is solved, the technical effect that the eye imaging process can be completed in other places except a hospital is achieved, and the convenience and the efficiency of the eye imaging process are improved.
In yet another embodiment of the present invention, the eye imaging method may further include the following steps.
And respectively judging whether the definition of the cornea image and the definition of the iris image meet a preset first condition.
For example, determining whether the sharpness of the cornea image satisfies a preset first condition may include the following steps.
And acquiring the gray value of each pixel point in the cornea image.
And calculating a first difference square sum of gray values of two pixel points which have any phase difference of two units in any row in the cornea image by using a preset Brenner gradient method.
When the first difference sum is greater than a preset first reference threshold, determining that the definition of the cornea image meets the first condition.
Illustratively, the accuracy of the Brenner gradient method depends on the choice of the first reference threshold. The first reference threshold may be determined based on a plurality of preset cornea images.
For example, determining whether the sharpness of the iris image satisfies a preset first condition may include the following steps.
And acquiring the gray value of each pixel point in the iris image.
And calculating a second difference square sum of the gray values of two pixel points which have any phase difference of two units in any row in the iris image by using the Brenner gradient method.
And when the second difference sum is larger than a preset second reference threshold value, determining that the definition of the iris image meets the first condition.
Illustratively, the accuracy of the Brenner gradient method depends on the choice of the second reference threshold. The second reference threshold may be determined according to a plurality of preset iris images.
When the sharpness of the cornea image satisfies the first condition, the cornea image and the first distance information are saved.
And/or saving the iris image and the second distance information when the definition of the iris image meets the first condition.
In the embodiment of the invention, when the definition of the cornea image meets the first condition, the cornea image and the first distance information are saved, otherwise, the cornea imaging process is continued. This ensures the sharpness of the corneal image. And when the definition of the iris image meets the first condition, storing the iris image and the second distance information, otherwise, continuing the iris imaging process. Thus ensuring the definition of the iris image.
In yet another embodiment of the present invention, the eye imaging method may further include the following steps.
And acquiring the light information of the current environment of the mobile terminal, which is acquired by the zooming image acquisition device.
And judging whether the light information exceeds a preset light threshold value.
And when the light ray information does not exceed the light ray threshold value, starting a flash lamp of the mobile terminal.
In the embodiment of the invention, when the light information of the current environment of the mobile terminal is insufficient, namely the light information does not exceed the light threshold, the flash lamp of the mobile terminal is started, so that the definition of the picture shot by the zooming image acquisition device can be ensured.
In another embodiment of the present invention, an eye imaging apparatus disclosed in the embodiment of the present invention is described in detail, including: the device comprises an acquisition module, a judgment module, an imaging module and a calculation module;
the acquisition module is used for acquiring an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of the focusing lens during angle scleral imaging;
the judging module is used for judging whether the imaging angle of the angle scleral edge picture meets a preset condition or not;
the imaging module is used for adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging when the imaging angle of the angle scleral edge picture meets a preset condition, and adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain an iris image with the maximum image definition and a third position of the focusing lens during iris imaging;
the calculation module is configured to calculate a distance between the first location and the second location to obtain first distance information, and calculate a distance between the first location and the third location to obtain second distance information.
In a further embodiment of the present invention, a computer-readable medium having non-volatile program code executable by a processor and causing the processor to perform the method of any one of the above embodiments is disclosed.
Unless specifically stated otherwise, the relative steps, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.
The device provided by the embodiment of the present invention has the same implementation principle and technical effect as the method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the method embodiments without reference to the device embodiments.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The computer program product for performing the eye imaging method provided by the embodiment of the present invention includes a computer readable storage medium storing a nonvolatile program code executable by a processor, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, and is not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An eye imaging method is applied to a mobile terminal, wherein a zoom image acquisition device is arranged in the mobile terminal, and the method comprises the following steps:
acquiring an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of a focusing lens during angle scleral imaging;
judging whether the imaging angle of the angle consolidation edge picture meets a preset condition or not;
when the imaging angle of the angle scleral frame meets a preset condition, adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging, and adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain an iris image with the maximum image definition and a third position of the focusing lens during iris imaging;
and calculating the distance between the first position and the second position to obtain first distance information, and calculating the distance between the first position and the third position to obtain second distance information.
2. The eye imaging method in claim 1, further comprising:
respectively judging whether the definition of the cornea image and the definition of the iris image meet a preset first condition;
when the definition of the cornea image meets the first condition, saving the cornea image and the first distance information;
and/or saving the iris image and the second distance information when the definition of the iris image meets the first condition.
3. An eye imaging method in accordance with claim 2, further comprising:
acquiring light ray information of the current environment of the mobile terminal, which is acquired by the zooming image acquisition device;
judging whether the light ray information exceeds a preset light ray threshold value or not;
and when the light ray information does not exceed the light ray threshold value, starting a flash lamp of the mobile terminal.
4. The eye imaging method according to claim 3, wherein the determining whether the imaging angle of the angle scleral edge picture satisfies a preset condition comprises:
extracting an edge image of the angle scleral image to obtain an angle scleral edge image;
connecting line segments between any two points on the corner edge image to obtain a plurality of connecting line segments;
determining a length value of a line segment with the longest length and a midpoint of the line segment with the longest length in the plurality of connected line segments;
and when the proportion of the point of which the distance from the point on the angle scleral edge image to the midpoint is equal to half of the length value exceeds a preset threshold value, determining that the imaging angle of the angle scleral edge image meets a preset condition.
5. The eye imaging method in accordance with claim 4, wherein the zoom image capture device comprises: a single zoom camera;
when the formation of image angle of angle sclera reason picture satisfies preset condition, adjust zoom image acquisition device focus the lens with distance between the people's eye, obtain the cornea image that the image definition is the biggest and focus the second position of lens when the cornea formation of image, and, adjust zoom image acquisition device focus the lens with distance between the people's eye, the third position of focusing the lens when obtaining the iris image that the image definition is the biggest and iris formation of image includes:
when the imaging angle of the angle scleral frame meets the preset condition, adjusting the distance between the focusing lens of the single zoom camera and the human eyes to obtain a cornea image with the maximum image definition and the second position of the focusing lens during cornea imaging;
and adjusting the distance between the focusing lens of the single zoom camera and the human eyes to obtain the iris image with the maximum image definition and the third position of the focusing lens during iris imaging.
6. The eye imaging method in accordance with claim 4, wherein the zoom image capture device comprises: a dual zoom camera; the binary zoom camera includes: a first zoom camera and a second zoom camera;
when the formation of image angle of angle sclera reason picture satisfies preset condition, adjust zoom image acquisition device focus the lens with distance between the people's eye, obtain the cornea image that the image definition is the biggest and focus the second position of lens when the cornea formation of image, and, adjust zoom image acquisition device focus the lens with distance between the people's eye, the third position of focusing the lens when obtaining the iris image that the image definition is the biggest and iris formation of image includes:
when the imaging angle of the angle scleral frame meets the preset condition, adjusting the distance between the focusing lens of the first zoom camera and the human eyes to obtain a cornea image with the maximum image definition and the second position of the focusing lens during cornea imaging;
and adjusting the distance between the focusing lens of the second zoom camera and the human eyes to obtain the iris image with the maximum image definition and the third position of the focusing lens during iris imaging.
7. The eye imaging method in accordance with claim 4, wherein the zoom image capture device comprises: a three-zoom camera;
the method further comprises the following steps: when the imaging angle of the angle scleral frame meets the preset condition, adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a lens image with the maximum image definition and a fourth position of the focusing lens during lens imaging;
and calculating the distance between the first position and the fourth position to obtain third distance information.
8. An eye imaging method in accordance with any one of claims 5-7, wherein determining whether the sharpness of the corneal image satisfies a preset first condition comprises:
acquiring the gray value of each pixel point in the cornea image;
calculating a first difference square sum of gray values of two pixel points which are different by two units at any line in the cornea image by using a preset Brenner gradient method;
when the first difference sum is greater than a preset first reference threshold, determining that the definition of the cornea image meets the first condition.
9. The eye imaging method according to claim 8, wherein determining whether the sharpness of the iris image satisfies a preset first condition comprises:
acquiring the gray value of each pixel point in the iris image;
calculating a second difference square sum of gray values of two pixel points which are different by two units at any line in the iris image by using the Brenner gradient method;
and when the second difference sum is larger than a preset second reference threshold value, determining that the definition of the iris image meets the first condition.
10. An eye imaging apparatus, comprising: the device comprises an acquisition module, a judgment module, an imaging module and a calculation module;
the acquisition module is used for acquiring an angle scleral image obtained by shooting human eyes by the zoom image acquisition device and a first position of the focusing lens during angle scleral imaging;
the judging module is used for judging whether the imaging angle of the angle scleral edge picture meets a preset condition or not;
the imaging module is used for adjusting the distance between a focusing lens of the zooming image acquisition device and the human eyes to obtain a cornea image with the maximum image definition and a second position of the focusing lens during cornea imaging when the imaging angle of the angle scleral edge picture meets a preset condition, and adjusting the distance between the focusing lens of the zooming image acquisition device and the human eyes to obtain an iris image with the maximum image definition and a third position of the focusing lens during iris imaging; the calculation module is configured to calculate a distance between the first location and the second location to obtain first distance information, and calculate a distance between the first location and the third location to obtain second distance information.
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| CN109547677B (en) * | 2018-12-06 | 2021-07-27 | 代黎明 | Fundus image shooting method, system and equipment |
| CN110123267B (en) * | 2019-03-22 | 2022-02-08 | 重庆康华瑞明科技股份有限公司 | Additional floodlight projection device based on ophthalmic slit lamp and image analysis system |
| CN110717482B (en) * | 2019-12-12 | 2020-04-14 | 支付宝(杭州)信息技术有限公司 | Iris image acquisition method and device, and focusing method and device |
| CN114027883B (en) * | 2021-11-08 | 2023-06-23 | 中山大学中山眼科中心 | Method, device and system for measuring biological parameters of crystalline lens |
| CN114931353B (en) * | 2022-04-18 | 2023-04-14 | 中山大学中山眼科中心 | Convenient and fast contrast sensitivity detection system |
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