CN111449620A - Full-automatic fundus camera and automatic photographing method thereof - Google Patents
Full-automatic fundus camera and automatic photographing method thereof Download PDFInfo
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- CN111449620A CN111449620A CN202010364210.4A CN202010364210A CN111449620A CN 111449620 A CN111449620 A CN 111449620A CN 202010364210 A CN202010364210 A CN 202010364210A CN 111449620 A CN111449620 A CN 111449620A
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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
- A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
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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
- A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
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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
- A61B3/14—Arrangements specially adapted for eye photography
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0012—Biomedical image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
- G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/19—Sensors therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/193—Preprocessing; Feature extraction
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10004—Still image; Photographic image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30041—Eye; Retina; Ophthalmic
Abstract
The invention relates to a full-automatic fundus camera, which comprises a light homogenizing module; the outer eye positioning module comprises an outer eye illumination light source which irradiates on the dodging module to form scattering bright spots, and further forms a reflection image of the scattering bright spots on the eye surface; the outer eye positioning camera is used for continuously acquiring and obtaining the images of the eyes with the reflection images and the peripheral areas of the eyes; an eye fundus imaging camera; a fundus illumination light source; a three-dimensional positioning driving module; and the processor module is used for determining the pupil position and the reflected image position of the eye according to the images of the eye and the peripheral area of the eye, and calculating the offset of the fundus imaging camera relative to the optimal shooting position, so that the three-dimensional positioning driving module is driven to move the fundus imaging camera to the optimal shooting position for shooting. In the invention, a user can automatically shoot a professional fundus retina color photo only by wearing the full-automatic fundus camera, so that unattended operation is realized, eyes are fully automatically identified, and positioning and photographing are realized.
Description
Technical Field
The invention relates to the technical field of fundus cameras, in particular to a full-automatic fundus camera and an automatic photographing method thereof.
Background
The fundus camera is an inspection tool for observing the fundus of the eye, for example, whether the retina, optic disc, blood vessel distribution, etc. are abnormal. The fixation light source can guide the testee to rotate the eyeballs to a specific direction, so that the operator can obtain a desired observation range. In most of the conventional fundus cameras, the fixation light source is introduced into the imaging system through an independent relay lens and then enters the fundus oculi, and therefore, the number of lenses used in the conventional fundus camera is large. In addition, the fixation light source needs to provide different focal lengths for different testees, and therefore, the number of components of the system is increased due to the focusing module for the fixation light source. Based on the above design demands, the volume of the existing fundus camera cannot be effectively reduced and the assembly cost is high.
The application No. 201510744093.3 discloses a fundus camera including an illumination device, an imaging lens assembly and an image capturing module. The illumination element is used for providing illumination light to illuminate the substrate of the eyeball. The imaging lens group is used for converging a reflected light from the base of the eyeball. The image capturing module comprises an image sensing element, a vision fixing lamp element and an optical element. The image sensing element is used for capturing the reflected light converged by the imaging lens group to form an image. The fixation lamp element is used for providing fixation light to enter the base of an eyeball through the imaging lens group. The optical element is arranged between the imaging lens group and the image sensing element and the fixation lamp element, and the image sensing element and the fixation lamp element are positioned on different equivalent focal planes of the imaging lens group. According to the above structure, the relay lens and the focusing module designed for the fixation light can be omitted.
The application number 200520040664.7 discloses an optometry instrument focusing by using split image optical wedges, wherein a split image double-optical-wedge distance measuring device is arranged between an image transfer objective lens and a CCD objective lens, the distance measuring device is composed of two semicircular optical wedges which are symmetrically arranged, and the intersection point of the optical wedges is coplanar with an image plane. The split image prism, namely the split image double-optical wedge distance measuring device, is placed in an imaging light path, and the shot picture is observed to be aligned in a split image window during focusing, namely focusing is completed.
The above prior art solutions have the following drawbacks: since the fundus camera belongs to a professional medical instrument, needs to be operated and interpreted by professional personnel, and can not be normally used by ordinary people, the wide use of the fundus camera is limited.
Disclosure of Invention
The invention aims to provide a full-automatic eye fundus camera which has the characteristics of full-automatic eye identification, positioning and photographing.
The above object of the present invention is achieved by the following technical solutions:
a full-automatic fundus camera comprises a first fundus camera,
a light uniformizing module;
the outer eye positioning module comprises a positioning module,
the outer eye illumination light source irradiates on the dodging module to form scattering bright spots, and further forms a reflected image of the scattering bright spots on the eye surface; and the combination of (a) and (b),
the outer eye positioning camera is used for continuously acquiring images of the eyes with the reflection images of the scattering bright spots and the peripheral areas of the eyes;
a fundus imaging camera for taking fundus pictures;
a fundus illumination light source for providing a white light source when the fundus imaging camera takes a color photograph of the fundus;
the three-dimensional positioning driving module is arranged on the external eye positioning module and the fundus imaging camera; and the number of the first and second groups,
the processor module is used for determining the pupil position and the reflected image position of the eye according to the images of the eye and the peripheral area of the eye, and calculating the offset of the fundus imaging camera relative to the optimal shooting position, so that the three-dimensional positioning driving module is driven to move the fundus imaging camera to the optimal shooting position for shooting.
Through adopting above-mentioned technical scheme, the user only need wear this full-automatic eye ground camera, can shoot out professional eye ground retina color photo automatically, accomplishes unmanned on duty, full-automatic discernment eyes, location and shoot, and outer eye orientation module not only includes the location to the pupil, still includes the location to whole head eyes position, and the reference position and the precision of location all compare pure pupil location accuracy.
The present invention in a preferred example may be further configured to: the split image focusing unit generates a path of laser which sequentially passes through the split image prism, the beam splitter prism and the light homogenizing module and enters the eyeground through the illumination light path to form transverse strip-shaped light bands on the left side and the right side of the eyeground; the fundus imaging camera continuously acquires fundus pictures; the processor module judges whether the two transverse strip-shaped light bands on the left side and the right side are aligned or not according to the fundus picture, if not, the processor module obtains an offset according to the distance between the two transverse strip-shaped light bands and controls the focusing driving unit to drive the fundus imaging camera to operate to the optimal focusing state, and if so, shooting is carried out.
By adopting the technical scheme, the laser beam passes through the splitting prism and then passes through the beam splitter prism to be split into two beams, the two beams are emitted to the eye ground to form two light bands, the image of the two light bands on the eye ground is directly shot by the imaging light path, when the two light bands are aligned, the focusing is finished, and the focusing efficiency and precision are improved.
The present invention in a preferred example may be further configured to: the outer eye positioning modules are two or more.
By adopting the technical scheme, two or more than two external eye positioning modules are adopted, so that more accurate eye pupil positions and reflection image positions are obtained.
The present invention in a preferred example may be further configured to: the eye mask is arranged in front of the dodging module.
By adopting the technical scheme, the eyeshade is adopted to cover the whole eyes and the peripheral area, so that the external light is prevented from interfering the illumination of the outer eyes.
The present invention in a preferred example may be further configured to: the system also comprises a network module used for sending the fundus picture to a remote terminal.
By adopting the technical scheme, the fundus retina color photograph information can be conveniently sent to the remote terminal, diagnosis can be carried out by a professional doctor, and the diagnosis result information can be pushed to a user.
The invention also aims to provide an automatic photographing method of the full-automatic eye ground camera, which has the characteristics of full-automatic eye identification, positioning and photographing.
The second aim of the invention is realized by the following technical scheme:
an automatic photographing method of a full-automatic fundus camera, comprising:
obtaining external eye positioning information, namely irradiating an external eye lighting source on a dodging module to form scattering bright spots, further forming reflection images of the scattering bright spots on the eye surface, and then continuously acquiring images of the eyes with the reflection images of the scattering bright spots and peripheral areas of the eyes by using an external eye positioning camera;
the processor module determines the pupil position and the reflected image position of the eye according to the image of the eye and the peripheral area of the eye, and calculates the offset of the fundus imaging camera relative to the optimal shooting position, so as to drive the three-dimensional positioning driving module to move the fundus imaging camera to the optimal shooting position;
the fundus oculi color picture is taken, and a fundus oculi illumination light source is adopted to provide a white light source when the fundus oculi imaging camera takes the fundus oculi color picture.
By adopting the technical scheme, a user can automatically shoot professional fundus retina color photos only by wearing the full-automatic fundus camera, unattended operation is achieved, eyes are identified fully automatically, positioning and photographing are achieved, and positioning accuracy, anti-interference performance and adaptability can be improved by using two characteristics of pupils and reflection images for positioning.
The present invention in a preferred example may be further configured to: after the fundus color photo shooting of one eye is finished, the three-dimensional positioning driving module is driven to move the fundus imaging camera to the other eye to shoot the fundus color photo.
Through adopting above-mentioned technical scheme, outer eye orientation module not only includes the location to the pupil, still includes the location to whole head eyes position, and the reference position and the precision of location are all more accurate than simple pupil location to can be more accurate move respectively about the eye shoot.
The present invention in a preferred example may be further configured to: the split image focusing unit generates a path of laser which sequentially passes through the split image prism, the beam splitter prism and the light homogenizing module, and enters the fundus through the illumination light path to form transverse strip-shaped light bands on the left side and the right side of the fundus; the fundus imaging camera continuously acquires fundus pictures; the processor module judges whether the two transverse strip-shaped light bands on the left side and the right side are aligned or not according to the fundus picture, if not, the processor module obtains an offset according to the distance between the two transverse strip-shaped light bands and controls the focusing driving unit to drive the fundus imaging camera to operate to the optimal focusing state, and if so, shooting is carried out.
By adopting the technical scheme, contrast focusing is adopted in the prior art, namely the definition of a picture is judged by adopting an algorithm, the focusing speed is low, the laser beam passes through the split prism and then passes through one path of beam splitter prism to be split into two beams, the two beams are emitted to the eye ground to form two light bands, the image of the two light bands on the eye ground is directly shot by the imaging light path, when the two light bands are aligned, the focusing is finished, and the focusing efficiency and precision are improved.
The present invention in a preferred example may be further configured to: two or more than two external eye positioning cameras are provided, so that more accurate eye pupil positions and reflected image positions are obtained.
By adopting the technical scheme, a triangulation method is adopted, and two groups of position variables are used, wherein one group is the central position of the pupil of the eye, and the other group is the positions of all bright spots; the distance, the upper position, the lower position, the left position and the right position of the two groups of data are respectively calculated, mutual evidence is obtained, and two or more than two external eye positioning cameras are adopted, so that more accurate eye pupil positions and more accurate reflected image positions are obtained.
The present invention in a preferred example may be further configured to: and after the fundus picture is taken, the fundus picture is also sent to a remote terminal through a network module.
By adopting the technical scheme, the fundus retina color photograph information can be conveniently sent to the remote terminal, diagnosis can be carried out by a professional doctor, and the diagnosis result information can be pushed to a user.
In summary, the invention includes at least one of the following beneficial technical effects:
1. a user can automatically shoot a professional fundus retina color photo only by wearing the full-automatic fundus camera, so that unattended operation is realized, eyes are fully automatically identified, and positioning and photographing are realized;
2. the external eye positioning module not only comprises the positioning of the pupil, but also comprises the positioning of the whole head eye position, the reference position and the precision of the positioning are more accurate than the simple pupil positioning, and the external eye positioning module can be more accurately moved to the left eye and the right eye respectively for shooting;
3. laser beams pass through the splitting prism and then pass through the beam splitting prism to be split into two beams, the two beams are emitted to the eye ground to form two light bands, images of the two light bands on the eye ground are directly shot by the imaging light path, when the two light bands are aligned, focusing is finished, and the focusing efficiency and precision are improved;
4. the fundus retina color photograph information can be conveniently sent to a remote terminal, diagnosis can be carried out by a professional doctor, and diagnosis result information can be pushed to a user.
Drawings
Fig. 1 is a block diagram of the structure of a fully-automatic fundus camera according to one embodiment of the present invention.
Fig. 2 is an external view of a fully automatic fundus camera of one embodiment of the present invention.
FIG. 3 is a diagram illustrating split image frame misalignment according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating split images being aligned according to an embodiment of the present invention.
In the figure, 1, a light homogenizing module, 2, an external eye illumination light source, 3, an external eye positioning camera, 4, a fundus imaging camera, 5, a fundus illumination light source, 6, a three-dimensional positioning driving module, 7, a processor module, 8, a split image focusing unit, 9, a focusing driving unit, 10, an eye mask, 11 and a shell.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a fully automatic fundus camera, including,
a light uniformizing module 1;
the outer eye positioning module comprises a positioning module,
the outer eye illumination light source 2 irradiates the dodging module 1 to form scattering bright spots, and further forms a reflected image of the scattering bright spots on the eye surface; and the combination of (a) and (b),
the external eye positioning camera 3 is used for continuously acquiring images of the eyes with the reflection images of the scattering bright spots and the peripheral areas of the eyes;
a fundus imaging camera 4 for taking fundus pictures;
a fundus illumination light source 5 for providing a white light source when the fundus imaging camera 4 takes a color photograph of the fundus;
the three-dimensional positioning driving module 6 is arranged on the external eye positioning module 6 and the fundus imaging camera 4; and the number of the first and second groups,
the processor module 7 determines the pupil position of the eye and the position of the reflected image according to the images of the eye and the peripheral area of the eye, and calculates the offset of the fundus imaging camera 4 relative to the optimal shooting position, so as to drive the three-dimensional positioning driving module 6 to move the fundus imaging camera 4 to the optimal shooting position for shooting.
The user only needs to wear the full-automatic eye ground camera, can shoot professional eye ground retina color photo automatically, accomplish unmanned on duty, full-automatic discernment eyes, location and shoot, and outer eye positioning module not only includes the location to the pupil, still includes the location to whole head eyes position, and the reference position and the precision of location are all more accurate than pure pupil location.
The split image focusing unit 8 generates one path of laser which sequentially passes through the split image prism, the beam splitter prism and the light uniformizing module 1 and enters the fundus through the illumination light path, and transverse strip-shaped light bands are formed on the left side and the right side of the fundus; the fundus imaging camera 4 continuously collects fundus pictures in the split image focusing process; the processor module 7 judges whether the two transverse strip-shaped light bands on the left side and the right side are aligned according to the fundus picture, if not, the processor module acquires an offset according to the distance between the two transverse strip-shaped light bands, then controls the focusing driving unit 9 to drive the fundus imaging camera 4 to operate to the optimal focusing state (front and back), and if so, performs shooting.
Laser beams pass through the image splitting prism and then pass through the light splitting prism to be split into two beams, the two beams are emitted to the eye ground to form two light bands, images of the two light bands on the eye ground are directly shot by the imaging light path, when the two light bands are aligned, focusing is finished, and focusing efficiency and precision are improved.
The number of the outer eye positioning modules is two or more, and two or more outer eye positioning modules are adopted, so that more accurate eye pupil positions and reflection image positions are obtained.
As shown in fig. 1 and 2, the light source module further includes an eye mask 10, which is disposed in front of the light homogenizing module 1, and the eye mask 10 is used to shield the whole eyes and the peripheral area, so as to prevent external light from interfering with the illumination of the external eyes. The dodging module 1, the outer eye illumination light source 2, the outer eye positioning camera 3, the fundus imaging camera 4, the fundus illumination light source 5, the three-dimensional positioning driving module 6, the processor module 7, the split image focusing unit 8 and the focusing driving unit 9 are arranged in a shell 11, the eye patch 10 is arranged at one end of the shell 11, and the dodging module 1 is located behind the eye patch 10.
The system also comprises a network module which is used for sending the fundus picture to a remote terminal, so that fundus retina color picture information can be conveniently sent to the remote terminal, diagnosis can be carried out by a professional doctor, and diagnosis result information can be pushed to a user.
The invention also discloses an automatic photographing method of the full-automatic fundus camera, which comprises the following steps:
obtaining external eye positioning information, namely irradiating an external eye lighting source on a dodging module to form scattering bright spots, further forming reflection images of the scattering bright spots on the eye surface, and then continuously acquiring images of the eyes with the reflection images of the scattering bright spots and peripheral areas of the eyes by using an external eye positioning camera;
the processor module determines the pupil position and the reflected image position of the eye according to the image of the eye and the peripheral area of the eye, and calculates the offset of the fundus imaging camera relative to the optimal shooting position, so as to drive the three-dimensional positioning driving module to move the fundus imaging camera to the optimal shooting position;
the fundus oculi color picture is taken, and a fundus oculi illumination light source is adopted to provide a white light source when the fundus oculi imaging camera takes the fundus oculi color picture.
A user can automatically shoot a professional fundus retina color photo only by wearing the full-automatic fundus camera, so that unattended operation is realized, eyes are fully automatically identified, and positioning and photographing are realized.
After the fundus color photo shooting of one eye is finished, the three-dimensional positioning driving module is driven to move the fundus imaging camera to the other eye to shoot the fundus color photo.
The outer eye positioning module not only comprises the positioning of the pupil, but also comprises the positioning of the whole head eye position, the reference position and the precision of the positioning are accurate compared with the simple pupil positioning, and the outer eye positioning module can be moved to the left eye and the right eye respectively to shoot more accurately.
The split image focusing unit generates a path of laser which sequentially passes through the split image prism, the beam splitter prism and the light homogenizing module, and enters the fundus through the illumination light path to form transverse strip-shaped light bands on the left side and the right side of the fundus; the fundus imaging camera continuously acquires fundus pictures in the split image focusing process; the processor module judges whether the two transverse strip-shaped light bands on the left side and the right side are aligned or not according to the fundus picture, if not, the processor module obtains an offset according to the distance between the two transverse strip-shaped light bands and then controls the focusing driving unit to drive the fundus imaging camera to operate to the optimal focusing state, and if so, shooting is carried out; the moving directions of the left and right light bands are opposite along with the change of the focusing position, and when the two light bands are aligned, the focusing is already in focus.
In the prior art, a split image prism for split image focusing is placed in an imaging light path, and the shot image is focused after the image in a split image window is observed to be aligned, namely, the focusing is finished, and laser is not used. In the embodiment of the invention, one laser beam is divided into two beams through the splitting prism and the beam splitter prism, the two beams are emitted to the fundus to form two light bands, and the two images of the laser beam emitted to the fundus are directly shot through the imaging light path, so that the focusing speed is higher.
Laser beams pass through the image splitting prism and then pass through the light splitting prism to be split into two beams, the two beams are emitted to the eye ground to form two light bands, images of the two light bands on the eye ground are directly shot by the imaging light path, when the two light bands are aligned, focusing is finished, and focusing efficiency and precision are improved.
Providing two or more than two external eye positioning cameras so as to obtain more accurate pupil positions of the eyes and reflected image positions, and adopting a triangulation method to use two groups of position variables, wherein one group is the central position of the pupils of the eyes, and the other group is the positions of all bright spots; the distance, the upper position, the lower position, the left position and the right position of the two groups of data are respectively calculated, mutual evidence is obtained, and two or more than two external eye positioning cameras are adopted, so that more accurate eye pupil positions and more accurate reflected image positions are obtained.
After the fundus picture is shot, the fundus picture is sent to a remote terminal through a network module, so that fundus retina color picture information can be conveniently sent to the remote terminal, diagnosis can be carried out by a professional doctor, and diagnosis result information can be pushed to a user.
In the embodiment of the invention, the outer eye illumination light source adopts an infrared point light source which is an infrared L ED light source with a certain divergence angle and a wavelength of about 850nm, human eyes cannot be seen, and pupil contraction of a user is avoided, the light uniformizing module adopts a diffusion film, the outer eye illumination light source is arranged behind the diffusion film, a certain distance (the distance is determined by the divergence angle of infrared L ED light source lamp beads, the farther the distance is, the larger the light spot is, the smaller the formed reflection image is, the higher the positioning accuracy is, but the more difficult the identification is, and the accuracy is reduced if the distance is too large, so that a more or less value can be obtained), the distance becomes a scattering light source, and meanwhile, a plurality of light spots are obtained on the diffusion film (a plurality of outer eye illumination light sources are adopted, at least one light spot can be formed by each outer eye illumination light source), the scattering surface light source formed by the light uniformizing diffusion film illuminates the eyes and the peripheral area in the whole eye mask, the pupil area of the eyes is dark, and the large light spots on the diffusion film can reflect light spots on the eyes, so that the whole eye mask the eye and the peripheral area can avoid interference of the outer eye.
The optical axis of the external eye positioning camera and the optical axis of the fundus imaging camera form a certain angle, and the external eye positioning camera can shoot infrared images of the whole eye and the peripheral area of the eye from different positions at the same time by using a wide-angle lens with a field angle larger than 90 degrees. Real-time eye images shot by the external eye positioning camera are transmitted to the processor module, and because the brightness of the pupil area is low, the brightness of the positioning reflection light spots is high, and the positions of the pupils of the eyes and the positions of the reflection images of the scattering bright spots on the eyes on each image can be obtained through image processing and analysis. According to the positions of pupils of eyes and the positions of reflected images on images obtained by different external eye positioning cameras, the method can be used for accurately calculating (the calculation method is basically a very basic calculation method, namely triangular positioning; during calculation, two groups of position variables are used, one group is the central position of the pupils of the eyes, the other group is the positions of all reflected images, the two groups of data respectively calculate the distance, the upper position, the lower position, the left position and the right position and mutually verify) to obtain the offset of the fundus imaging camera relative to the optimal shooting position, and the processor module drives the three-dimensional positioning driving module to move the fundus imaging camera to the optimal shooting position according to the calculated offset. The pupil and the reflection image are used for positioning at the same time, so that the positioning precision, the anti-interference performance and the adaptability can be improved. In the preferred embodiment of the invention, two outer eye positioning cameras are used, but there may be more.
The split image focusing module forms a split image picture shown in figure 3 on the fundus, the left and right sides of the split image picture are respectively provided with a bright line, the processor module obtains the fundus image picture, identifies and analyzes the distance between the left and right bright lines, and controls the fundus imaging camera to operate to the optimal focusing state through the focusing driving unit according to the obtained amount of the forehead offset, so that the split image picture shown in figure 4 is obtained, and the focusing is completed. Finally, calculating the average brightness of the fundus region in the picture acquired by the fundus imaging camera at the moment to obtain the optimal photometric value for setting the optimal photographing exposure parameter of the fundus imaging camera; after the focusing and photometry processes are finished, the fundus illumination light source flashes the fundus illumination white light source to obtain a color picture of the fundus. After one side of eyes is shot, the three-dimensional positioning driving module is driven to move the fundus imaging camera to a possible position of the other side of eyes, the steps of the method are repeated, automatic positioning, focusing and photometry are carried out, and finally, a fundus color picture of the other side of eyes is shot. The automatic movement to the left eye and the right eye is to shoot the whole face picture illuminated by the infrared light source by the left outer eye positioning camera and the right outer eye positioning camera, the positions of the outlines of the left eye and the right eye are found out by an AI detection algorithm, the whole lens group is moved to the position of the left eye or the right eye, the outline of the reflected bright spot and the outline of the pupil are extracted by an AI or CV segmentation algorithm, and then the central positions of the bright spot and the pupil are calculated. Calculating the offset in the x, y and z directions according to the bright spots of the left and right pictures and the pupil center position, moving the lens group integrally, finely adjusting the front and rear direction positions to reach the working distance position, and aligning the pupil center in the up, down, left and right directions; then moving to the other eye position to repeat the process.
The processor module discloses: the processor module can comprise a processor module such as a CPU or an MPU or a host system which is built by taking the CPU or the MPU as a core and comprises hardware or software.
The network module comprises a satellite network interface and protocol, a wireless network interface and protocol, a wired network interface and protocol, a satellite network interface and protocol, a wireless positioning interface and protocol, a wireless communication interface and protocol, a wired network interface and protocol, a wired communication interface and protocol, a satellite positioning interface and protocol, a GNSS, a GPS protocol, a Beidou navigation satellite positioning protocol, a G L ONASS protocol, a GaleIoT protocol, a common IoT positioning interface and protocol, a wired communication interface and protocol, a wireless positioning interface and protocol, a GPS positioning interface and a GPS protocol, a GPS positioning protocol, a wireless positioning interface, a GPS positioning protocol, a wireless positioning interface, a GPS positioning protocol, a wireless positioning network interface, a wireless positioning network, a wireless positioning.
Claims (10)
1. A full-automatic fundus camera is characterized by comprising,
a light uniformizing module (1);
the outer eye positioning module comprises a positioning module,
the outer eye illumination light source (2) irradiates on the dodging module (1) to form scattering bright spots, and further forms a reflected image of the scattering bright spots on the eye surface; and the combination of (a) and (b),
the outer eye positioning camera (3) is used for continuously acquiring images of the eyes with the reflection images of the scattering bright spots and the peripheral areas of the eyes;
a fundus imaging camera (4) for taking fundus pictures;
a fundus illumination light source (5) for providing a white light source when the fundus imaging camera (4) takes a colour photograph of the fundus;
the three-dimensional positioning driving module (6), the external eye positioning module and the fundus imaging camera (4) are arranged on the three-dimensional positioning driving module (6); and the number of the first and second groups,
the processor module (7) is used for determining the pupil position and the reflected image position of the eye according to the images of the eye and the peripheral area of the eye, and calculating the offset of the fundus imaging camera (4) relative to the optimal shooting position, so that the three-dimensional positioning driving module (6) is driven to move the fundus imaging camera (4) to the optimal shooting position for shooting.
2. The full-automatic fundus camera according to claim 1, further comprising a split image focusing unit (8) and a focusing driving unit (9), wherein the split image focusing unit (8) generates a path of laser light which sequentially passes through the split image prism, the beam splitter prism and the dodging module (1), and enters the fundus through the illumination light path to form a transverse strip-shaped light band on each of the left side and the right side of the fundus; the fundus imaging camera (4) continuously acquires fundus pictures; the processor module (7) judges whether the two transverse strip-shaped light bands on the left side and the right side are aligned or not according to the fundus picture, if not, the processor module controls the focusing driving unit (9) to drive the fundus imaging camera (4) to operate to the optimal focusing state after acquiring the offset according to the distance between the two transverse strip-shaped light bands, and if so, shooting is performed.
3. The fully automatic fundus camera according to claim 1, wherein the outer eye positioning modules are two or more.
4. The fully automatic fundus camera according to claim 1, further comprising an eye mask (10) placed in front of the dodging module (1).
5. A fully automatic fundus camera according to claim 1 further comprising a network module for transmitting said fundus picture to a remote terminal.
6. An automatic photographing method of a full-automatic fundus camera, comprising:
obtaining external eye positioning information, namely irradiating an external eye lighting source on a dodging module to form scattering bright spots, further forming reflection images of the scattering bright spots on the eye surface, and then continuously acquiring images of the eyes with the reflection images of the scattering bright spots and peripheral areas of the eyes by using an external eye positioning camera;
the processor module determines the pupil position and the reflected image position of the eye according to the image of the eye and the peripheral area of the eye, and calculates the offset of the fundus imaging camera relative to the optimal shooting position, so as to drive the three-dimensional positioning driving module to move the fundus imaging camera to the optimal shooting position;
the fundus oculi color picture is taken, and a fundus oculi illumination light source is adopted to provide a white light source when the fundus oculi imaging camera takes the fundus oculi color picture.
7. The automatic photographing method of a full-automatic fundus camera according to claim 6, wherein after the fundus color photograph photographing of one eye is completed, the three-dimensional positioning driving module is driven to move the fundus imaging camera to another eye for fundus color photograph photographing.
8. The automatic photographing method of the full-automatic fundus camera according to claim 6, further comprising a split image focusing step, wherein the split image focusing unit generates a path of laser light which sequentially passes through the split image prism, the beam splitter prism and the dodging module and enters the fundus through the illumination light path, and a horizontal strip-shaped light band is formed on each of the left side and the right side of the fundus; the fundus imaging camera continuously acquires fundus pictures; the processor module judges whether the two transverse strip-shaped light bands on the left side and the right side are aligned or not according to the fundus picture, if not, the processor module obtains an offset according to the distance between the two transverse strip-shaped light bands and controls the focusing driving unit to drive the fundus imaging camera to operate to the optimal focusing state, and if so, shooting is carried out.
9. The automatic photographing method of a full-automatic fundus camera according to claim 6, wherein two or more than two of the outer eye positioning cameras are provided so as to obtain more accurate pupil positions of the eye and reflected image positions.
10. The automated photographing method of a fully automated fundus camera according to claim 6, wherein the fundus picture is further transmitted to a remote terminal through a network module after the fundus picture is taken.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112022086A (en) * | 2020-09-04 | 2020-12-04 | 万灵帮桥医疗器械(广州)有限责任公司 | Slit-lamp microscope automatic focusing method and slit-lamp microscope |
| CN112043236A (en) * | 2020-10-14 | 2020-12-08 | 上海鹰瞳医疗科技有限公司 | Fundus camera and full-automatic fundus image shooting method |
| CN112057037A (en) * | 2020-09-30 | 2020-12-11 | 宁波市眼科医院 | Automatic change ophthalmology inspection robot |
| CN112075921A (en) * | 2020-10-14 | 2020-12-15 | 上海鹰瞳医疗科技有限公司 | Fundus camera and focal length adjusting method thereof |
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| CN115546883A (en) * | 2022-11-07 | 2022-12-30 | 浙江省人民医院 | Fundus image processing system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010028440A1 (en) * | 2000-03-17 | 2001-10-11 | Tomoyuki Iwanaga | Ophthalmologic apparatus |
| WO2005065528A1 (en) * | 2004-01-02 | 2005-07-21 | Vision Instruments Pty Ltd | Devices to facilitate alignment and focussing of a fundus camera |
| CN2840920Y (en) * | 2005-04-05 | 2006-11-29 | 上海东门子仪器仪表有限公司 | Optometry instrument adopting split-screen optical wedge for focusing |
| CN1989894A (en) * | 2005-12-28 | 2007-07-04 | 株式会社拓普康 | Alignment method for ophthalmic measurement apparatus and alignment device of the same |
| CN102551654A (en) * | 2012-01-20 | 2012-07-11 | 王毅 | Optical coherence biological measurer and method for biologically measuring eyes |
| CN106491076A (en) * | 2017-01-06 | 2017-03-15 | 苏州微清医疗器械有限公司 | Full-automatic fundus camera |
| CN110215186A (en) * | 2019-05-09 | 2019-09-10 | 南京览视医疗科技有限公司 | One kind being automatically aligned to positioning fundus camera and its working method |
-
2020
- 2020-04-30 CN CN202010364210.4A patent/CN111449620A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010028440A1 (en) * | 2000-03-17 | 2001-10-11 | Tomoyuki Iwanaga | Ophthalmologic apparatus |
| WO2005065528A1 (en) * | 2004-01-02 | 2005-07-21 | Vision Instruments Pty Ltd | Devices to facilitate alignment and focussing of a fundus camera |
| CN2840920Y (en) * | 2005-04-05 | 2006-11-29 | 上海东门子仪器仪表有限公司 | Optometry instrument adopting split-screen optical wedge for focusing |
| CN1989894A (en) * | 2005-12-28 | 2007-07-04 | 株式会社拓普康 | Alignment method for ophthalmic measurement apparatus and alignment device of the same |
| CN102551654A (en) * | 2012-01-20 | 2012-07-11 | 王毅 | Optical coherence biological measurer and method for biologically measuring eyes |
| CN106491076A (en) * | 2017-01-06 | 2017-03-15 | 苏州微清医疗器械有限公司 | Full-automatic fundus camera |
| CN110215186A (en) * | 2019-05-09 | 2019-09-10 | 南京览视医疗科技有限公司 | One kind being automatically aligned to positioning fundus camera and its working method |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112022086A (en) * | 2020-09-04 | 2020-12-04 | 万灵帮桥医疗器械(广州)有限责任公司 | Slit-lamp microscope automatic focusing method and slit-lamp microscope |
| CN112057037A (en) * | 2020-09-30 | 2020-12-11 | 宁波市眼科医院 | Automatic change ophthalmology inspection robot |
| CN112220447B (en) * | 2020-10-14 | 2022-02-15 | 上海鹰瞳医疗科技有限公司 | Fundus camera and fundus image shooting method |
| CN112075921B (en) * | 2020-10-14 | 2022-03-18 | 上海鹰瞳医疗科技有限公司 | Fundus camera and focal length adjusting method thereof |
| CN112075920A (en) * | 2020-10-14 | 2020-12-15 | 上海鹰瞳医疗科技有限公司 | Fundus camera and working distance adjusting method thereof |
| CN112190228A (en) * | 2020-10-14 | 2021-01-08 | 上海鹰瞳医疗科技有限公司 | Fundus camera and detection method thereof |
| CN112220447A (en) * | 2020-10-14 | 2021-01-15 | 上海鹰瞳医疗科技有限公司 | Fundus camera and fundus image shooting method |
| CN112075921A (en) * | 2020-10-14 | 2020-12-15 | 上海鹰瞳医疗科技有限公司 | Fundus camera and focal length adjusting method thereof |
| CN112043236B (en) * | 2020-10-14 | 2021-06-15 | 上海鹰瞳医疗科技有限公司 | Fundus camera and full-automatic fundus image shooting method |
| WO2022077800A1 (en) * | 2020-10-14 | 2022-04-21 | 上海鹰瞳医疗科技有限公司 | Fundus camera and fully-automatic photography method for fundus image |
| CN112043236A (en) * | 2020-10-14 | 2020-12-08 | 上海鹰瞳医疗科技有限公司 | Fundus camera and full-automatic fundus image shooting method |
| CN112075920B (en) * | 2020-10-14 | 2022-02-18 | 上海鹰瞳医疗科技有限公司 | Fundus camera and working distance adjusting method thereof |
| CN112842252A (en) * | 2020-12-31 | 2021-05-28 | 北京理工大学 | Spatially self-positioning ophthalmic optical coherence tomography system |
| CN113729619A (en) * | 2021-09-24 | 2021-12-03 | 北京鹰瞳科技发展股份有限公司 | Portable fundus camera and method of locking/unlocking the same |
| CN113729619B (en) * | 2021-09-24 | 2024-01-16 | 北京鹰瞳科技发展股份有限公司 | Portable fundus camera and method of locking/unlocking the same |
| WO2024012594A1 (en) * | 2022-07-15 | 2024-01-18 | 北京鹰瞳科技发展股份有限公司 | Red light irradiation device and red light irradiation method used for myopia physiotherapy |
| CN115379121A (en) * | 2022-10-17 | 2022-11-22 | 北京鹰瞳科技发展股份有限公司 | Method for optimizing image preview results of fundus camera and related product |
| CN115379121B (en) * | 2022-10-17 | 2022-12-20 | 北京鹰瞳科技发展股份有限公司 | Method for optimizing image preview results of fundus camera and related product |
| CN115546883A (en) * | 2022-11-07 | 2022-12-30 | 浙江省人民医院 | Fundus image processing system |
| CN115546883B (en) * | 2022-11-07 | 2023-02-28 | 浙江省人民医院 | Fundus image processing system |
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