CN106448086A - Eyesight protection device and method for detecting reading posture based on TOF depth camera - Google Patents
Eyesight protection device and method for detecting reading posture based on TOF depth camera Download PDFInfo
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- CN106448086A CN106448086A CN201610766456.8A CN201610766456A CN106448086A CN 106448086 A CN106448086 A CN 106448086A CN 201610766456 A CN201610766456 A CN 201610766456A CN 106448086 A CN106448086 A CN 106448086A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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Abstract
The invention discloses an eyesight protection device for detecting a reading posture based on a TOF depth camera, and the device comprises a start/stop module, a reading posture measurement module, an ambient light measurement module, a central processing module and a voice prompt module. The reading posture measurement module comprises the TOF depth camera and a gravity sensing module. The start/stop module, the reading posture measurement module, the ambient light measurement module and the voice prompt module are respectively connected with the central processing module. The device gives more comprehensive consideration to the subjective and environmental factors of eyesight protection, helps a user cultivate a good reading habit, urges the user to do eye exercises regularly, is portable, can be carried and used for reading or surfing on the Internet indoors or outdoors, and protects the eyesight of the user.
Description
Technical field
The present invention relates to a kind of protection optometric device reading attitude based on the detection of TOF depth camera, belong to protection eyesight
Electronic product device technique field.
Background technology
The existing blind person of China more than 500 ten thousand according to investigations, the nearly million people of low visual acuity, especially in the middle of children and teenager, suffer from
Sick rate is high.Students of nation physical health investigation latest data shows, China pupil myopia incidence of disease is 22.78%, middle school
Life is 55.22%, and high school student is 70.34%.Therefore the preventing and treating of myopia increasingly becomes with sight protectio and is extensively asked by social concerns
Topic.Myopia is the adaptive change to Contemporary Environmental for the human eye, and its occur and development is lived with the close eye day by day increasing
Dynamic environment is closely related, and incorrect eye, as long in reading or surf time, reads abnormal sitting posture true, and stravismus or crouch regards,
The half-hearted eye exercises that do, and on the high side at ultraviolet content, the bad light rings such as light intensity is crossed weak or too strong, and optical flare degree is on the low side
It is the main cause that modern children myopia increases with eye etc. under border.Being used for pre-myopia prevention at present on the market, the device of protection eyesight is most
For the desk correcting faulty sitting posture, it is single to there is applicable scene in this kind of device, not readily portable, does not accounts for eye-using environment and uses at the moment
Between etc. the problem to eyesight influence for the factor.
Content of the invention
It is an object of the invention to protection optometric device and the method proposing to read attitude based on the detection of TOF depth camera,
Aiming to solve the problem that user, no matter in indoor and outdoor, browses among books or during various electronic equipment, light under eye-using environment is analyzed in detection
Brightness, flicker degree and UV-shares, and real-time reminding user keeps correct sitting posture, distance and visual angle, doing eye exercises on time,
The problem avoiding excess eye-using, thus help user to form well by eye custom, protect user's eyesight all the time.
For reaching this purpose, the invention provides a kind of protection optometric device reading attitude based on the detection of TOF depth camera
And method, its technical scheme is as follows：
A kind of protection optometric device reading attitude based on the detection of TOF depth camera, described device includes startup/stopping modular,
Read attitude measurement module, ambient light measurement module, central processing module and voice cue module, described startup/stopping mould
Block, reads attitude measurement module, and ambient light measurement module is all connected with central processing module with voice cue module；
Described reading attitude measurement module include TOF depth camera and gravity sensitive module, described TOF depth camera for every
Certain time shoots a width three dimensional depth image, is processed by extraction of depth information taken by obtaining including user
The distance of object, after gained three dimensional depth image is obtained by central processing module, through the recognition of face in central processing module
Program processes and locks user object in all objects that shot image includes, individually obtain user and reading object away from
From Viewing-angle information；
Described gravity sensitive module is for measuring reading object inclination angle with respect to the horizontal plane, and it is right to read then in conjunction with user distance
The distance of elephant, visual angle, calculate judge user's reading sitting posture now, if be side-looking or crouch regard；
Described ambient light measurement module is used for measuring current light intensity, optical flare degree and UV-shares information；
Described central processing module passes through startup/stopping modular starter, and attitude measurement module and environment flash ranging are read in control
Amount module proceeds by detection, and the data of detection are passed to central authorities by described reading attitude measurement module and ambient light measurement module
Processing module, is processed for central module, and compares with the authority data that prestores in central processing module, it is judged that
Active user's browse state whether specification, if lack of standardization, then call voice cue module and reminds user, otherwise, continue executing with inspection
Survey, process, it is judged that process, until device is out of service.
Above-mentioned TOF depth camera takes the photograph a width three dimensional depth image every 15 second beats, records the range information of clapped object.
Above-mentioned ambient light measurement module includes light intensity sensor, uitraviolet intensity sensor and optical flare degree measurement mould
Block.
Above-mentioned voice cue module includes that volume arranges module and voice playing module, for sentencing through central processing module
Have no progeny, remind user correctly to use eye, and play eye exercises music.
A kind of protection eyesight method reading attitude based on the detection of TOF depth camera, utilizes above-mentioned device, and its feature exists
In：Described step is as follows：
Step one：Being fixed on this device on reading object, user passes through startup/stopping modular starter；
Step 2：Read attitude measurement module and proceed by measurement with ambient light measurement module；
Read attitude measurement module and first TOF depth camera is shot three dimensional depth image at regular intervals, record in image
The depth information of each pixel；Then extracting each pixel depth information of gained, gained three dimensional depth image is processed through central authorities
The recognition of face program process of module, locks and identifies user object, and then obtains the depth information of user in depth image, from
And calculate the visual angle relative to reading object for the user, range data；Combine the reading object phase that gravity sensor records afterwards
For the inclination angle of horizontal plane, calculate user's sitting posture inclined degree now further, it is judged that whether user is in sleeping regarding or side
Depending on state；
Ambient light measurement module is recorded respectively by light intensity sensor, uitraviolet intensity sensor and optical flare degree measurement module respectively
Current light intensity, the content of light source middle-ultraviolet lamp composition, and optical flare degrees of data；
Step 3：The user perspective obtaining with process through preliminary surveying, and the distance between reading object, user's sitting posture tilts journey
Degree, current light intensity, the content of light source middle-ultraviolet lamp composition, and after optical flare degrees of data is obtained by central processing module,
Contrast with the normal data being stored in advance in central processing module, it is judged that whether data measured is in the range of correct；In
Centre processing module records user with between at the moment simultaneously, if the data obtained is in the reasonable fluctuating range of normal data and with between at the moment
Rationally, then return step 2, continue executing with detection, process, it is judged that process；If data measured exceeds the reasonable ripple of normal data
Dynamic amplitude or use eye overlong time, then remind user by voice cue module；
Step 4：After voice message finishes, continuing to return step 2, repeated execution of steps two to four, until device quits work.
Voice reminder in above-mentioned steps three is arranged according to following：
When the distance detecting between user and reading object is less than 0.8 times of standard browser distance set in advance, prompting
Currently browse hypotelorism, please suitably increase the distance with reading object；
When the distance detecting between user and reading object is more than 1.2 times of standard browser distance set in advance, prompting
Currently browse hypertelorism, please suitably reduce the distance with reading object；
When detect user browse visual angle exceed in the range of normal viewing angle when, it is to the left/to the right that prompting user currently browses visual angle, please
Suitably adjust visual angle
When light intensity in light source being detected higher than 1.2 times of standard light intensity set in advance, prompting current light is relatively
By force, please must not continue in such circumstances to browse；When detecting in light source that light intensity is less than standard light intensity set in advance
0.8 times when, prompting current light is more weak, please must not continue read books in such circumstances；
When light source middle-ultraviolet lamp intensity being detected higher than the intensity of intensive ultraviolet set in advance, prompting current light source contains
Too strong UV-shares, may damage eyesight, please stop continuing in such circumstances to browse；
When detecting that current optical flare degree is spent less than minimum optical flare set in advance, current optical flare is pointed out to spend low, no
Preferably continue in such circumstances to browse；
When detecting that little prompting user notes being had a rest by eye constantly with often reaching 1 between at the moment, such as look into the distance the green 5 minutes of distant place；
When detect with reach between at the moment 2 little constantly, prompting user does eye exercises, and plays eye exercises music.
The beneficial effect that the present invention is reached：
The present invention shoots three dimensional depth image by TOF depth camera, and combines gravity sensor and face recognition technology, simultaneously
Record the multi-aspect informations such as user's sitting posture, distance, visual angle；Record light intensity by optical measuring module, the flicker degree of light and composition etc.
Multi-aspect information；Through central processing module process, user is reminded to entangle in conjunction with by eye temporal information in time by voice cue module
Just bad eye is accustomed to, and notes science eye.The subjective factor of this invention fairly comprehensive consideration protection eyesight and environment because of
Element, helps user to form well by eye custom, supervises user to do eye exercises on time, and it is easy to carry simultaneously, either reads a book
Or online, either indoor or outdoors, can be convenient for carrying and use, provide the user sight protectio.
Brief description
Fig. 1 is the structured flowchart of the present invention；
Fig. 2 is the method flow diagram of the present invention；
Fig. 3 is the overhaul flow chart reading attitude measurement module.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating the present invention
Technical scheme, and can not limit the scope of the invention with this.
As it is shown in figure 1, a kind of protection optometric device reading attitude based on the detection of TOF depth camera, described device includes
Startup/stopping modular, reads attitude measurement module, ambient light measurement module, central processing module and voice cue module, institute
State startup/stopping modular, read attitude measurement module, ambient light measurement module and voice cue module all with central processing module
It is connected；
Described reading attitude measurement module include TOF depth camera and gravity sensitive module, described TOF depth camera for every
Certain time shoots a width three dimensional depth image, is processed by extraction of depth information taken by obtaining including user
The distance of object, after gained three dimensional depth image is obtained by central processing module, through the recognition of face in central processing module
Program processes and locks user object in all objects that shot image includes, individually obtain user and reading object away from
From Viewing-angle information；
Described gravity sensitive module is for measuring reading object inclination angle with respect to the horizontal plane, and it is right to read then in conjunction with user distance
The distance of elephant, visual angle, calculate judge user's reading sitting posture now, if be side-looking or crouch regard；
Described ambient light measurement module is used for measuring current light intensity, optical flare degree and UV-shares information；
Described central processing module passes through startup/stopping modular starter, and attitude measurement module and environment flash ranging are read in control
Amount module proceeds by detection, and the data of detection are passed to central authorities by described reading attitude measurement module and ambient light measurement module
Processing module, is processed for central module, and compares with the authority data that prestores in central processing module, it is judged that
Active user's browse state whether specification, if lack of standardization, then call voice cue module and reminds user, otherwise, continue executing with inspection
Survey, process, it is judged that process, until device is out of service.
Above-mentioned TOF depth camera takes the photograph a width three dimensional depth image every 15 second beats, records the range information of clapped object.
Above-mentioned ambient light measurement module includes light intensity sensor, uitraviolet intensity sensor and optical flare degree measurement mould
Block.
Above-mentioned voice cue module includes that volume arranges module and voice playing module, for sentencing through central processing module
Have no progeny, remind user correctly to use eye, and play eye exercises music.
As shown in Figure 2 and Figure 3, a kind of protection eyesight method reading attitude based on the detection of TOF depth camera, utilizes above-mentioned
Device, it is characterised in that：Described step is as follows：
Step one：Being fixed on this device on reading object, user passes through startup/stopping modular starter；
Step 2：Read attitude measurement module and proceed by measurement with ambient light measurement module；
Read attitude measurement module and first TOF depth camera is shot three dimensional depth image at regular intervals, record in image
The depth information of each pixel；Then extracting each pixel depth information of gained, gained three dimensional depth image is processed through central authorities
The recognition of face program process of module, locks and identifies user object, and then obtains the depth information of user in depth image, from
And calculate the visual angle relative to reading object for the user, range data；Combine the reading object phase that gravity sensor records afterwards
For the inclination angle of horizontal plane, calculate user's sitting posture inclined degree now further, it is judged that whether user is in sleeping regarding or side
Depending on state；
Ambient light measurement module is recorded respectively by light intensity sensor, uitraviolet intensity sensor and optical flare degree measurement module respectively
Current light intensity, the content of light source middle-ultraviolet lamp composition, and optical flare degrees of data；
Step 3：The user perspective obtaining with process through preliminary surveying, and the distance between reading object, user's sitting posture tilts journey
Degree, current light intensity, the content of light source middle-ultraviolet lamp composition, and after optical flare degrees of data is obtained by central processing module,
Contrast with the normal data being stored in advance in central processing module, it is judged that whether data measured is in the range of correct；In
Centre processing module records user with between at the moment simultaneously, if the data obtained is in the reasonable fluctuating range of normal data and with between at the moment
Rationally, then return step 2, continue executing with detection, process, it is judged that process；If data measured exceeds the reasonable ripple of normal data
Dynamic amplitude or use eye overlong time, then remind user by voice cue module；
Step 4：After voice message finishes, continuing to return step 2, repeated execution of steps two to four, until device quits work.
Voice reminder in above-mentioned steps three is arranged according to following：
When the distance detecting between user and reading object is less than 0.8 times of standard browser distance set in advance, prompting
Currently browse hypotelorism, please suitably increase the distance with reading object；
When the distance detecting between user and reading object is more than 1.2 times of standard browser distance set in advance, prompting
Currently browse hypertelorism, please suitably reduce the distance with reading object；
When detect user browse visual angle exceed in the range of normal viewing angle when, it is to the left/to the right that prompting user currently browses visual angle, please
Suitably adjust visual angle
When light intensity in light source being detected higher than 1.2 times of standard light intensity set in advance, prompting current light is relatively
By force, please must not continue in such circumstances to browse；When detecting in light source that light intensity is less than standard light intensity set in advance
0.8 times when, prompting current light is more weak, please must not continue read books in such circumstances；
When light source middle-ultraviolet lamp intensity being detected higher than the intensity of intensive ultraviolet set in advance, prompting current light source contains
Too strong UV-shares, may damage eyesight, please stop continuing in such circumstances to browse；
When detecting that current optical flare degree is spent less than minimum optical flare set in advance, current optical flare is pointed out to spend low, no
Preferably continue in such circumstances to browse；
When detecting that little prompting user notes being had a rest by eye constantly with often reaching 1 between at the moment, such as look into the distance the green 5 minutes of distant place；
When detect with reach between at the moment 2 little constantly, prompting user does eye exercises, and plays eye exercises music.
The present invention shoots three dimensional depth image by TOF depth camera, through extraction of depth information process, and combines gravity biography
Sensor and face recognition technology, in that context it may be convenient to obtain the multi-aspect informations such as user's sitting posture, distance, visual angle simultaneously；Pass through flash ranging
Amount module records light intensity, the multi-aspect information such as the flicker degree of light and composition, through central processing module process, combines and believes between at the moment
Breath is reminded user to correct bad eye custom in time by voice cue module, notes science eye.This invention is more comprehensive
Consider subjective factor and the environmental factor of protection eyesight, help user to form well by eye custom, supervise user to do eye on time
Setting-up exercises, it is applicable to several scenes simultaneously, and either reading or online, either indoor or outdoors, can conveniently take
Carry and use, provide the user sight protectio.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, can also make some improvement and deformation, these improve and deformation
Also should be regarded as protection scope of the present invention.
Claims (6)
1. the protection optometric device based on TOF depth camera detection reading attitude, it is characterised in that：Described device includes opening
Dynamic/stopping modular, reading attitude measurement module, ambient light measurement module, central processing module and voice cue module, described
Startup/stopping modular, read attitude measurement module, ambient light measurement module and voice cue module all with central processing module phase
Even；
Described reading attitude measurement module include TOF depth camera and gravity sensitive module, described TOF depth camera for every
Certain time shoots a width three dimensional depth image, is processed by extraction of depth information taken by obtaining including user
The distance of object, after gained three dimensional depth image is obtained by central processing module, through the recognition of face in central processing module
Program processes and locks user object in all objects that shot image includes, individually obtain user and reading object away from
From Viewing-angle information；
Described gravity sensitive module is for measuring reading object inclination angle with respect to the horizontal plane, and it is right to read then in conjunction with user distance
The distance of elephant, visual angle, calculate judge user's reading sitting posture now, if be side-looking or crouch regard；
Described ambient light measurement module is used for measuring current light intensity, optical flare degree and UV-shares information；
Described central processing module passes through startup/stopping modular starter, and attitude measurement module and environment flash ranging are read in control
Amount module proceeds by detection, and the data of detection are passed to central authorities by described reading attitude measurement module and ambient light measurement module
Processing module, is processed for central module, and compares with the authority data that prestores in central processing module, it is judged that
Active user's browse state whether specification, if lack of standardization, then call voice cue module and reminds user, otherwise, continue executing with inspection
Survey, process, it is judged that process, until device is out of service.
2. the protection optometric device reading attitude based on the detection of TOF depth camera according to claim 1, its feature exists
In：Described TOF depth camera takes the photograph a width three dimensional depth image every 15 second beats, records the range information of clapped object.
3. the protection optometric device reading attitude based on the detection of TOF depth camera according to claim 1, its feature exists
In：Described ambient light measurement module includes light intensity sensor, uitraviolet intensity sensor and optical flare degree measurement module.
4. the protection optometric device reading attitude based on the detection of TOF depth camera according to claim 1, its feature exists
In：Described voice cue module includes that volume arranges module and voice playing module, for after central processing module judges,
Remind user correctly to use eye, and play eye exercises music.
5. the protection eyesight method based on TOF depth camera detection reading attitude, it is characterised in that utilize claim 1 institute
The device stated, it is characterised in that：Described step is as follows：
Step one：Being fixed on this device on reading object, user passes through startup/stopping modular starter；
Step 2：Read attitude measurement module and proceed by measurement with ambient light measurement module；
Read attitude measurement module and first TOF depth camera is shot three dimensional depth image at regular intervals, record in image
The depth information of each pixel；Then extracting each pixel depth information of gained, gained three dimensional depth image is processed through central authorities
The recognition of face program process of module, locks and identifies user object, and then obtains the depth information of user in depth image, from
And calculate the visual angle relative to reading object for the user, range data；Combine the reading object phase that gravity sensor records afterwards
For the inclination angle of horizontal plane, calculate user's sitting posture inclined degree now further, it is judged that whether user is in sleeping regarding or side
Depending on state；
Ambient light measurement module is recorded respectively by light intensity sensor, uitraviolet intensity sensor and optical flare degree measurement module respectively
Current light intensity, the content of light source middle-ultraviolet lamp composition, and optical flare degrees of data；
Step 3：The user perspective obtaining with process through preliminary surveying, and the distance between reading object, user's sitting posture tilts journey
Degree, current light intensity, the content of light source middle-ultraviolet lamp composition, and after optical flare degrees of data is obtained by central processing module,
Contrast with the normal data being stored in advance in central processing module, it is judged that whether data measured is in the range of correct；In
Centre processing module records user with between at the moment simultaneously, if the data obtained is in the reasonable fluctuating range of normal data and with between at the moment
Rationally, then return step 2, continue executing with detection, process, it is judged that process；If data measured exceeds the reasonable ripple of normal data
Dynamic amplitude or use eye overlong time, then remind user by voice cue module；
Step 4：After voice message finishes, continuing to return step 2, repeated execution of steps two to four, until device quits work.
6. the protection eyesight method reading attitude based on the detection of TOF depth camera according to claim 5, its feature exists
In：Voice reminder in described step 3 is arranged according to following：
When the distance detecting between user and reading object is less than 0.8 times of standard browser distance set in advance, prompting
Currently browse hypotelorism, please suitably increase the distance with reading object；
When the distance detecting between user and reading object is more than 1.2 times of standard browser distance set in advance, prompting
Currently browse hypertelorism, please suitably reduce the distance with reading object；
When detect user browse visual angle exceed in the range of normal viewing angle when, it is to the left/to the right that prompting user currently browses visual angle, please
Suitably adjust visual angle
When light intensity in light source being detected higher than 1.2 times of standard light intensity set in advance, prompting current light is relatively
By force, please must not continue in such circumstances to browse；When detecting in light source that light intensity is less than standard light intensity set in advance
0.8 times when, prompting current light is more weak, please must not continue read books in such circumstances；
When light source middle-ultraviolet lamp intensity being detected higher than the intensity of intensive ultraviolet set in advance, prompting current light source contains
Too strong UV-shares, may damage eyesight, please stop continuing in such circumstances to browse；
When detecting that current optical flare degree is spent less than minimum optical flare set in advance, current optical flare is pointed out to spend low, no
Preferably continue in such circumstances to browse；
When detecting that little prompting user notes being had a rest by eye constantly with often reaching 1 between at the moment, such as look into the distance the green 5 minutes of distant place；
When detect with reach between at the moment 2 little constantly, prompting user does eye exercises, and plays eye exercises music.
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| CN108303708B (en) * | 2018-01-03 | 2022-07-29 | 京东方科技集团股份有限公司 | Three-dimensional reconstruction system and method, mobile device, eye protection method and AR device |
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