CN108460807B - The instant measuring table of user's astigmatism - Google Patents
The instant measuring table of user's astigmatism Download PDFInfo
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- CN108460807B CN108460807B CN201810176703.8A CN201810176703A CN108460807B CN 108460807 B CN108460807 B CN 108460807B CN 201810176703 A CN201810176703 A CN 201810176703A CN 108460807 B CN108460807 B CN 108460807B
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- astigmatism
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
-
- 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
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
- A61B3/1035—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes for measuring astigmatism
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/40—Image enhancement or restoration by the use of histogram techniques
Abstract
The present invention relates to a kind of instant measuring tables of user's astigmatism, comprising: touch-screen input device is arranged on PDA device, under the operation of user, inputting the pre-set maximum astigmatism degree of user；Water-tight type protective cover is arranged in front of preceding camera, for encapsulating the preceding camera, to provide watertight protection for the preceding camera.
Description
Technical field
The present invention relates to medical field more particularly to a kind of instant measuring tables of user's astigmatism.
Background technique
Astigmatism (satigmatism) is the ametropia normal performance of one kind of eyes, related with the radian of cornea.Parallel rays
Into after intraocular, since refractive power differs eyeball on different meridians, it cannot be gathered in a bit (focus), cannot also be formed
Clearly image, such case are known as astigmatism.Astigmatic eyes arrives the distance between eye by adjustment effect or mobile target, all cannot
Formed clearly as, only wear suitable cylindrical lens, could be formed on the retina clearly as.By the form of expression, can incite somebody to action
Astigmatism is divided into regular astigmatism and irregular astigmatism, the former can be corrected with eyeglass, and the latter can not be corrected with eyeglass.
Identical precision is detected to user's myopia degree currently, lacking for the detection of user's astigmatism, in addition, astigmatism
Detection requires special environment and carries out fixed point detection, can not be measured in real time.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of instant measuring tables of user's astigmatism, are detected using customization
Mechanism realizes the instant detection to user's astigmatism, and after instant astigmatism is greater than predetermined, user's wearing spectacles
When the astigmatism of the eyes after correction, inform that user carries out reconfiguring for glasses, to mitigate burden for users.
For this purpose, the present invention has following important inventive point:
(1) the image block mechanism based on the real-time signal-to-noise ratio grade of image is established, while passing through the specific of three primary colours channel
The region to be identified where target is judged in numerical analysis, to improve the precision of image recognition；
(2) contrast enhancement processing directly proportional to the width of the histogram distribution range is executed to image, so that figure
The contrast processing of picture and the content of image match；
(3) the pupil radical length instant based on user determines instant astigmatism, and is greater than in instant astigmatism and uses
When the astigmatism of the eyes after the wearing spectacles post-equalization of family, astigmatism alarm is carried out to prompt user to reconfigure glasses to user.
According to an aspect of the present invention, a kind of instant measuring table of user's astigmatism is provided, user's astigmatism is
When measuring table include:
Touch-screen input device is arranged on PDA device, under the operation of user, input user to be pre-set
Maximum astigmatism degree；
Water-tight type protective cover is arranged in front of preceding camera, for encapsulating the preceding camera, for the preceding camera
Watertight protection is provided；
Preceding camera is arranged on the front console of PDA device, for carrying out instant image taking to PDA user, to obtain
It obtains and exports instant user images；
Histogram treatment equipment is connect with the preceding camera, for receiving the instant user images, to described instant
User images execute histogram treatment, to obtain the histogram distribution range of the instant user images；
Contrast processing equipment is connect with the histogram treatment equipment, for receiving the histogram distribution range, really
The width of the fixed histogram distribution range, to the instant user images execute with the width of the histogram distribution range at
The contrast enhancement processing of direct ratio, to obtain contrast processing image；
SD storage chip, for the signal-to-noise ratio piecemeal table of comparisons to be stored in advance, the signal-to-noise ratio piecemeal table of comparisons is saved
It take signal-to-noise ratio grade as the corresponding image block of index, wherein in the signal-to-noise ratio piecemeal table of comparisons, signal-to-noise ratio grade is got over
Height, corresponding image block are smaller.
Specific embodiment
Embodiment of the present invention will be described in detail below.
In order to overcome above-mentioned deficiency, the present invention has built a kind of instant measuring table of user's astigmatism, has used user's astigmatism
Instant measuring table is spent with the astigmatism of the eyes after the instant astigmatism recognized is greater than user's wearing spectacles post-equalization
When, astigmatism alarm is carried out to prompt user to reconfigure glasses to user, and the instant measuring table of user's astigmatism realizes
The real-time measurement of astigmatism when user's wearing spectacles.
The instant measuring table of user's astigmatism shown according to an embodiment of the present invention by following each equipment group at:
Touch-screen input device is arranged on PDA device, under the operation of user, input user to be pre-set
Maximum astigmatism degree；
Water-tight type protective cover is arranged in front of preceding camera, for encapsulating the preceding camera, for the preceding camera
Watertight protection is provided.
Then, continue that the specific structure of the instant measuring table of user's astigmatism of the invention is further detailed.
Can also include: in the instant measuring table of user's astigmatism
Preceding camera is arranged on the front console of PDA device, for carrying out instant image taking to PDA user, to obtain
It obtains and exports instant user images.
Can also include: in the instant measuring table of user's astigmatism
Histogram treatment equipment is connect with the preceding camera, for receiving the instant user images, to described instant
User images execute histogram treatment, to obtain the histogram distribution range of the instant user images；
Contrast processing equipment is connect with the histogram treatment equipment, for receiving the histogram distribution range, really
The width of the fixed histogram distribution range, to the instant user images execute with the width of the histogram distribution range at
The contrast enhancement processing of direct ratio, to obtain contrast processing image；
SD storage chip, for the signal-to-noise ratio piecemeal table of comparisons to be stored in advance, the signal-to-noise ratio piecemeal table of comparisons is saved
It take signal-to-noise ratio grade as the corresponding image block of index, wherein in the signal-to-noise ratio piecemeal table of comparisons, signal-to-noise ratio grade is got over
Height, corresponding image block are smaller；
Image block equipment is connect with the contrast processing equipment, for receiving contrast processing image, also with
SD storage chip connection for receiving the signal-to-noise ratio piecemeal table of comparisons, to the signal-to-noise ratio of contrast processing image into
Row detection is compareed based on the corresponding signal-to-noise ratio grade got from the signal-to-noise ratio piecemeal with obtaining corresponding signal-to-noise ratio grade
Corresponding image block is searched in table, and figure is carried out to contrast processing image according to the corresponding image block found
As segmentation, to obtain the image-region of same size；
Piecemeal processing equipment is connect with described image piecemeal equipment, for executing following place for each image-region
Reason: the R channel value, G channel value and channel B value of each pixel are obtained, R channel value, the channel G of each pixel are calculated
The overall channel value of all pixels point is added, using the overall channel value as corresponding pixel points to obtain figure by the sum of value and channel B value
As the overall channel value in region；
Piecemeal extract equipment is connect with the piecemeal processing equipment, to receive the overall channel value of each image-region, for
Each image-region is determined when its current overall channel value is greater than the average value of the overall channel value of image-region around it
For region to be identified and export；
Radical length measuring device is connect with the piecemeal extract equipment, for combining in all regions to be identified to obtain
Pattern to be identified is obtained, the pupil Object identifying based on pupil image feature is executed to the pattern to be identified, and recognizing pupil
When the object of hole, corresponding pupil radical length is obtained, and exports the pupil radical length；
Astigmatism identifies equipment, connect with the radical length measuring device, for receiving the pupil radical length, base
Corresponding instant astigmatism is determined in the pupil radical length, and exports the instant astigmatism；
Astigmatism matching unit identifies that equipment and the touch-screen input device are connect with the astigmatism respectively, is used for
The instant astigmatism and the maximum astigmatism degree are received, and is higher than the maximum astigmatism degree in the instant astigmatism
When, astigmatism alarm signal is issued, is also used to issue astigmatism when the instant astigmatism is lower than and is equal to the maximum astigmatism degree
Normal signal；
PDA display is connect with the astigmatism matching unit, for when receiving the astigmatism alarm signal, with
High shiny red mode is by text information real-time display corresponding with the astigmatism alarm signal in the preset areas of the PDA display
In domain；
Wherein, in astigmatism identification equipment, corresponding instant astigmatism is determined based on the pupil radical length
It include: that the pupil radical length is bigger, the instant astigmatism is higher.
In the instant measuring table of user's astigmatism:
The pre-set maximum astigmatism degree of user is the astigmatism of the eyes after user's wearing spectacles post-equalization.
In the instant measuring table of user's astigmatism:
The PDA display is also used to when receiving the astigmatism normal signal, in the preset areas of the PDA display
Text information is not shown in domain.
In the instant measuring table of user's astigmatism:
The touch-screen input device is integrated on the PDA display.
In addition, further including ultrasonic distance measurement equipment in the instant measuring table of user's astigmatism, for detecting user
The current distance of eye arrival preceding camera.
Ultrasonic distance measurement principle is as follows: ultrasonic transmitter emits ultrasonic wave to a direction, while emission time
Start timing, ultrasonic wave is propagated in air, is encountered barrier on the way and just is returned to come immediately, ultrasonic receiver receives back wave
Just stop timing immediately.The aerial spread speed of ultrasonic wave is 340m/s, according to the time t of timer record, so that it may
Calculate distance (s) of the launch point away from barrier, it may be assumed that s=340t/2.Here it is so-called time difference telemetrys.Ultrasound
Away from principle to be using the aerial spread speed of ultrasonic wave be it is known that measurement sound wave encounters barrier after transmitting and is reflected back
Come time, according to transmitting and the received time difference calculate launch point to barrier actual range.It can be seen that ultrasonic wave
Range measurement principle and Principles of Radar are the same.
However, in fact, the aerial spread speed of ultrasonic wave is a variable, not according to ambient temperature
Together, the aerial spread speed of ultrasonic wave is also different, therefore, in order to improve the accuracy of ultrasonic distance measurement, it is necessary first to root
The aerial spread speed of ultrasonic wave is calculated according to ambient temperature.
Using the instant measuring table of user's astigmatism of the invention, astigmatism when for user's wearing spectacles in the prior art
The technical problem of measurement accuracy and real-time difference, firstly, being executed to image directly proportional to the width of the histogram distribution range
Contrast enhancement processing so that the contrast processing of image matches with the content of image, secondly, establishing, to be based on image real-time
The image block mechanism of signal-to-noise ratio grade, while being analyzed by the specific value in three primary colours channel, judge where target to
Identification region, so that the precision of image recognition is improved, finally, the pupil radical length instant based on user, determines immediately
Astigmatism.
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, anything that does not depart from the technical scheme of the invention are right according to the technical essence of the invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (1)
1. a kind of instant measuring table of user's astigmatism characterized by comprising
Touch-screen input device is arranged on PDA device, for inputting the pre-set maximum of user under the operation of user
Astigmatism degree；
Water-tight type protective cover is arranged in front of preceding camera, for encapsulating the preceding camera, to provide for the preceding camera
Watertight protection；
Preceding camera is arranged on the front console of PDA device, for carrying out instant image taking to PDA user, to obtain simultaneously
Export instant user images；
Histogram treatment equipment is connect with the preceding camera, for receiving the instant user images, to the instant user
Image executes histogram treatment, to obtain the histogram distribution range of the instant user images；
Contrast processing equipment is connect with the histogram treatment equipment, for receiving the histogram distribution range, determines institute
The width for stating histogram distribution range executes the instant user images directly proportional to the width of the histogram distribution range
Contrast enhancement processing, with obtain contrast processing image；
SD storage chip, for the signal-to-noise ratio piecemeal table of comparisons to be stored in advance, the signal-to-noise ratio piecemeal table of comparisons is saved to believe
Making an uproar than grade is the corresponding image block indexed, wherein in the signal-to-noise ratio piecemeal table of comparisons, signal-to-noise ratio higher grade,
Corresponding image block is smaller；
Image block equipment is connect with the contrast processing equipment, for receiving contrast processing image, also with it is described
SD storage chip is connected for receiving the signal-to-noise ratio piecemeal table of comparisons, is examined to the signal-to-noise ratio of contrast processing image
It surveys to obtain corresponding signal-to-noise ratio grade, based on the corresponding signal-to-noise ratio grade got from the signal-to-noise ratio piecemeal table of comparisons
Corresponding image block is searched, and image point is carried out to contrast processing image according to the corresponding image block found
It cuts, to obtain the image-region of same size；
Piecemeal processing equipment is connect with described image piecemeal equipment, for executing following processing for each image-region: obtaining
The R channel value, G channel value and channel B value for taking each pixel calculate the R channel value, G channel value and B of each pixel
The overall channel value of all pixels point is added, using the overall channel value as corresponding pixel points to obtain image district by the sum of channel value
The overall channel value in domain；
Piecemeal extract equipment is connect with the piecemeal processing equipment, to receive the overall channel value of each image-region, for each
A image-region, when its current overall channel value is greater than the average value of the overall channel value of image-region around it, determine it as to
Identification region simultaneously exports；
Radical length measuring device is connect with the piecemeal extract equipment, for all regions to be identified combinations are obtained to
Identification icon executes the pupil Object identifying based on pupil image feature to the pattern to be identified, and is recognizing pupil pair
As when, obtain corresponding pupil radical length, and export the pupil radical length；
Astigmatism identifies equipment, connect with the radical length measuring device, for receiving the pupil radical length, is based on institute
It states pupil radical length and determines corresponding instant astigmatism, and export the instant astigmatism；
Astigmatism matching unit identifies that equipment and the touch-screen input device are connect with the astigmatism respectively, for receiving
The instant astigmatism and the maximum astigmatism degree, and when the instant astigmatism is higher than the maximum astigmatism degree, hair
Astigmatism alarm signal out is also used to that it is normal to issue astigmatism when the instant astigmatism is lower than and is equal to the maximum astigmatism degree
Signal；
PDA display is connect with the astigmatism matching unit, for when receiving the astigmatism alarm signal, with highlighted
Red mode by text information real-time display corresponding with the astigmatism alarm signal the PDA display predeterminable area
It is interior；
Wherein, in astigmatism identification equipment, determine that corresponding instant astigmatism includes: based on the pupil radical length
The pupil radical length is bigger, and the instant astigmatism is higher.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810176703.8A CN108460807B (en) | 2018-03-03 | 2018-03-03 | The instant measuring table of user's astigmatism |
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| CN201810176703.8A CN108460807B (en) | 2018-03-03 | 2018-03-03 | The instant measuring table of user's astigmatism |
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| CN108460807B true CN108460807B (en) | 2019-04-02 |
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| CN102138775A (en) * | 2011-03-23 | 2011-08-03 | 温州医学院 | Dispersion speckle refractometer and method for testing myopic, hyperopic and astigmatic degrees |
| CN102429633A (en) * | 2011-08-18 | 2012-05-02 | 天津瞬清眼视光技术开发有限公司 | Optometer for comprehensively detecting diopter and visual function of eyes and optometry method |
| KR20120127790A (en) * | 2011-05-16 | 2012-11-26 | 경북대학교 산학협력단 | Eye tracking system and method the same |
| JP2015201722A (en) * | 2014-04-07 | 2015-11-12 | キヤノン株式会社 | Image processing device, imaging apparatus, image processing method, program and storage medium |
| CN106529423A (en) * | 2016-10-20 | 2017-03-22 | 鹄誉医疗科技（上海）有限公司 | Energy bar human-eye distance measurement method based on Android system |
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2018
- 2018-03-03 CN CN201810176703.8A patent/CN108460807B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102138775A (en) * | 2011-03-23 | 2011-08-03 | 温州医学院 | Dispersion speckle refractometer and method for testing myopic, hyperopic and astigmatic degrees |
| KR20120127790A (en) * | 2011-05-16 | 2012-11-26 | 경북대학교 산학협력단 | Eye tracking system and method the same |
| CN102429633A (en) * | 2011-08-18 | 2012-05-02 | 天津瞬清眼视光技术开发有限公司 | Optometer for comprehensively detecting diopter and visual function of eyes and optometry method |
| JP2015201722A (en) * | 2014-04-07 | 2015-11-12 | キヤノン株式会社 | Image processing device, imaging apparatus, image processing method, program and storage medium |
| CN106529423A (en) * | 2016-10-20 | 2017-03-22 | 鹄誉医疗科技（上海）有限公司 | Energy bar human-eye distance measurement method based on Android system |
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| CN108460807A (en) | 2018-08-28 |
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Effective date of registration: 20190306 Address after: 237000 room 105, building 12, Singapore Yuyuan, Lu'an economic and Technological Development Zone, Anhui Applicant after: Lu'an Tonghui Intelligent Technology Co Ltd Address before: 053200 No. 168 Jinji North Street, Jizhou City, Hengshui City, Hebei Province Applicant before: Yang Ming |
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