CN104182980B - Simulation method and simulation system for distortion visual impairment - Google Patents
Simulation method and simulation system for distortion visual impairment Download PDFInfo
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- CN104182980B CN104182980B CN201410418326.6A CN201410418326A CN104182980B CN 104182980 B CN104182980 B CN 104182980B CN 201410418326 A CN201410418326 A CN 201410418326A CN 104182980 B CN104182980 B CN 104182980B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004088 simulation Methods 0.000 title claims abstract description 22
- 206010047571 Visual impairment Diseases 0.000 title abstract 4
- 208000029257 vision disease Diseases 0.000 title abstract 4
- 230000004393 visual impairment Effects 0.000 title abstract 4
- 239000011159 matrix material Substances 0.000 claims abstract description 78
- 230000000007 visual effect Effects 0.000 claims abstract description 58
- 230000004438 eyesight Effects 0.000 claims description 30
- 230000001771 impaired effect Effects 0.000 claims description 19
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- 238000005070 sampling Methods 0.000 claims description 5
- 230000016776 visual perception Effects 0.000 abstract description 2
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- 201000009487 Amblyopia Diseases 0.000 description 1
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Abstract
The invention discloses a simulation method and a simulation system for distortion visual impairment, wherein the method comprises the following steps that: a visual sensor model is built, and an information interference matrix is built according to the basic information of the visual sensor model, corresponding interference parameters of the visual sensor model and the double-eye visual area information; a read image is processed by using the visual sensor model to obtain a feature value matrix of the image; the information interference matrix and the feature value matrix of the image are processed to obtain an interfered feature value matrix; and the interfered feature value matrix is used for carrying out image rebuilding, so that the distortion visual impairment is simulated. The method and the system disclosed by the invention can be used for accurately simulating the visual perception condition of distortion visual impairment patients.
Description
Technical field
The present invention relates to simulation technology field, more particularly to a kind of spatial offset impaired vision analogy method and be
System.
Background technology
Spatial offset (distortion) is damaged, particularly a kind of common impaired vision of amblyopia disease
Form.Be embodied in patient perceivable to image spatially distort, deform, lines bending, or even the spatial information of image
There is dislocation.This damage has had a strong impact on the daily life of patient, but long-time cannot get due attention.In clinician
And it is public, the cognition to impaired vision still rests on simply level such as " blurred vision ".
At present, many spatial frequency channel sensor models of the mankind are based primarily upon to the simulation that spatial offset is damaged：In the mankind
Primary visual cortex in have full-time different feeling open country, spatial frequency, top optimization direction, the image of phase place of processing of specific neuron to believe
Breath, and the information after process is sent to into the visual cortex of higher level, and then form visual cognition.But damage there is spatial offset
Patient in, the neuron of primary visual cortex receives the information such as the receptive field or spatial frequency of mistake, and then incorporates mistake
Information to senior visual cortex so that there is distortion, modification in the image of last visual cognition.
The information of this dislocation is considered as always the internal interference of human perception.In the perception loop of normal person, though
Also there is the presence of similar internal interference, but because neuron receptive field is overlapped, information has inside redundancy, and brain dry
Disturb the presence of exclusion mechanism so that the consciousness internal interference of normal person affects little to visual cognition.But in the patient of impaired vision
Brain in, consciousness internal interference has arrived greatly the normal mechanism of brain and has been difficult to the degree for suppressing, and then visual cognition is produced
Huge interference.
Also, this internal interference all presents certain correlation between space, time and neuron.Internal interference
Appearance be to damage related, in general, the internal interference of patient's eyes overlapping region is higher in spatial offset is damaged.Together
The internal interference size of one neuron has temporal correlation pair in the range of certain hour.And characteristic --- as experienced
Open country, spatial frequency, top optimization direction, phase place etc. --- it is more easy to incorrect messages between similar neuron.
At work, visual cortex how is correctly selected to process model, internal interference and characteristic model based on model above
To build simulation model, situation about being damaged with accurate simulation spatial offset always perplexs key the asking of area research person
Topic.The existing injury pattern that represents only can be acted upon representing to simple geometric figure such as grating, Gabor spots, but institute's diagram
Shape is excessively simple, uninteresting, and departs from real daily life, not enough intuitively.
The content of the invention
It is an object of the invention to provide the analogy method and system of a kind of spatial offset impaired vision, for accurate simulation
The visual perception situation of spatial offset injured patient.
The purpose of the present invention is achieved through the following technical solutions：
A kind of analogy method of spatial offset impaired vision, the method includes：
Build visual receptor model, and the essential information according to the visual receptor model, the visual receptor model
Corresponding interference parameter, and binocular vision area information is building information interference matrix；
The image for reading is processed using the visual receptor model, obtains the eigenvalue matrix of the image；
Described information interference matrix is processed with the eigenvalue matrix of the image, the characteristic value square of Jing interference is obtained
Battle array；
The eigenvalue matrix disturbed using the Jing carries out the reconstruct of image, so as to the simulation of spatial offset impaired vision.
A kind of simulation system of spatial offset impaired vision, the system includes：
Information interference matrix builds module, for building visual receptor model, and according to the visual receptor model
Essential information, the corresponding interference parameter of visual receptor model, and binocular vision area information is building information interference matrix；
Eigenvalue matrix acquisition module, for being processed the image for reading using the visual receptor model,
Obtain the eigenvalue matrix of the image；
Interference characteristic value matrix acquisition module, for described information interference matrix to be carried out with the eigenvalue matrix of the image
Process, obtain the eigenvalue matrix of Jing interference；
Image Reconstruction module, the eigenvalue matrix for being disturbed using the Jing carries out the reconstruct of image, so as to space is wrong
The simulation of position impaired vision.
As seen from the above technical solution provided by the invention, by using the image procossing for pressing close to human perception mode
Model simulating human perception's disturbance regime, change conventional method and simple geometry figure can only be processed, be simulated by the method
Situation, efficiently natural image can be acted upon, and presented, wide with lesion mimic application scenarios, simulation is also
The advantages of former degree is high.Through multiple it was verified that the output image of the present invention intuitively, can efficiently reduce sensory impairment feelings
Condition.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to use needed for embodiment description
Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, can be obtaining other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of flow chart of the analogy method of spatial offset impaired vision that the embodiment of the present invention one is provided；
Fig. 2 is a kind of schematic diagram of the simulation system of spatial offset impaired vision that the embodiment of the present invention two is provided.
Specific embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based on this
Inventive embodiment, the every other enforcement that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to protection scope of the present invention.
At present, it is limited by inveteracy old idea, clinician and public to be difficult to the cognition that I shall appreciate it as a personal favour empty
Between misplace the harm of damage, the concern that spatial offset is damaged is limited in professional researcher.The embodiment of the present invention is provided
A kind of technology for representing spatial offset damage, can vividly, intuitively describe spatial offset damage phenomenon, mechanism, be faced with improving
Bed doctor and public human-subject tests, cause its enough attention.
Embodiment one
Fig. 1 is a kind of flow chart of the analogy method of spatial offset impaired vision that the embodiment of the present invention one is provided.Such as Fig. 1
Shown, the method mainly comprises the steps：
Step 11, structure visual receptor model, and the essential information according to the visual receptor model, the visual experience
The corresponding interference parameter of device model, and binocular vision area information is building information interference matrix.
In the embodiment of the present invention, the visual receptor model mainly includes：Spatial sampling receptor, Jia Bai (Gabor)
Receptor.Spatial sampling receptor principle is similar to V1 areas neuronal messages handling principle, and image in its receptive field is received
Collection, preservation are simultaneously transmitted to next stage；Jia Bai (Gabor) receptors belong to windowed FFT based on gal cypress function,
Gabor functions can extract the related feature of image on frequency domain different scale, different directions.
The essential information of the visual receptor model mainly includes：The receptive field of receptor, optimal frequency and phase place etc..
The corresponding interference parameter of the visual receptor model mainly includes：Spatially interference strength distribution, interference when
Between correlation, and the correlation matrix of receptor characteristic etc..Spatially interference strength distribution generally image central area is little, more
It is bigger to Zhou Bianqu intensity；There is the correlation disturbed between the receptor of similar characteristic (such as receptive field, optimal frequency, phase place)
Property is higher, and has the interference strength between the receptor of similar characteristic similar.
Specifically, it is essential information and the correlation matrix to various characteristics according to the visual receptor model, it is raw
Into corresponding information of correlation matrix；Meanwhile, comprehensive binocular vision area, the time correlation of spatially interference strength distribution and interference
Property information, generate corresponding interference strength matrix；Finally, by described information correlation matrix and the interference strength matrix phase
Take advantage of, obtain information interference matrix.
Step 12, the image for reading is processed using the visual receptor model, obtain the feature of the image
Value matrix.
Step 13, the eigenvalue matrix of described information interference matrix and the image is processed, obtained the spy of Jing interference
Value indicative matrix.
Step 14, the eigenvalue matrix disturbed using the Jing carry out the reconstruct of image, so as to spatial offset impaired vision
Simulation.
Above-mentioned steps are repeated, until simulation terminates.
The embodiment of the present invention is by simulating human perception's interference using the image processing model for pressing close to human perception mode
Situation, the method changes the situation that conventional method can only be processed simple geometry figure, simulated, can efficiently to nature
Image is acted upon, and is presented, wide with lesion mimic application scenarios, the advantages of simulation reduction degree is high.Through repeatedly real
Proof is trampled, the output image of the present invention is directly perceived, can efficiently reduce sensory impairment situation.
Embodiment two
Fig. 2 is a kind of schematic diagram of the simulation system of spatial offset impaired vision that the embodiment of the present invention two is provided.Such as Fig. 2
Shown, the system mainly includes：
Information interference matrix builds module 21, for building visual receptor model, and according to the visual receptor model
Essential information, the corresponding interference parameter of visual receptor model, and binocular vision area information come build information interference square
Battle array；
Eigenvalue matrix acquisition module 22, for using the visual receptor model at the image that reads
Reason, obtains the eigenvalue matrix of the image；
Interference characteristic value matrix acquisition module 23, for described information interference matrix to be entered with the eigenvalue matrix of the image
Row is processed, and obtains the eigenvalue matrix of Jing interference；
Image Reconstruction module 24, the eigenvalue matrix for being disturbed using the Jing carries out the reconstruct of image, so as to space
The simulation that visual allesthesia is damaged.
Further, the visual receptor model includes：Spatial sampling receptor, Gabor receptors.
Further, the essential information of the visual receptor model includes：The receptive field of receptor, optimal frequency and phase
Position.
Further, the corresponding interference parameter of the visual receptor model includes：Spatially interference strength distribution, interference
Temporal correlation, and the correlation matrix to various characteristics.
Further, the essential information according to the visual receptor model, the visual receptor model are corresponding dry
Disturbing parameter, and binocular vision area information includes building information interference matrix：
According to the essential information and the correlation matrix to various characteristics of the visual receptor model, corresponding information is generated
Correlation matrix；
Comprehensive binocular vision area, spatially interference strength distribution and the temporal correlation information disturbed, generate corresponding dry
Disturb intensity matrix；
By described information correlation matrix and the interference strength matrix multiple, information interference matrix is obtained.
It should be noted that the specific implementation of function that each functional module included in said system is realized exists
Have a detailed description in each embodiment above, therefore repeated no more here.
Those skilled in the art can be understood that, for convenience and simplicity of description, only with above-mentioned each function
The division of module is illustrated, and in practical application, as desired can distribute above-mentioned functions by different function moulds
Block is completed, will the internal structure of system be divided into different functional modules, to complete all or part of work(described above
Energy.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment can
To be realized by software, it is also possible to realize by the mode of software plus necessary general hardware platform.Based on such understanding,
The technical scheme of above-described embodiment can be embodied in the form of software product, the software product can be stored in one it is non-easily
The property lost storage medium (can be CD-ROM, USB flash disk, portable hard drive etc.) in, including some instructions use is so that a computer sets
Standby (can be personal computer, server, or network equipment etc.) performs the method described in each embodiment of the invention.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (6)
1. a kind of analogy method of spatial offset impaired vision, it is characterised in that the method includes：
Build visual receptor model, and the essential information according to the visual receptor model, the visual receptor model correspondence
Interference parameter, and binocular vision area information is building information interference matrix；
The image for reading is processed using the visual receptor model, obtains the eigenvalue matrix of the image；
Described information interference matrix is processed with the eigenvalue matrix of the image, the eigenvalue matrix of Jing interference is obtained；
The eigenvalue matrix disturbed using the Jing carries out the reconstruct of image, so as to realize the simulation of spatial offset impaired vision；
Wherein, the corresponding interference parameter of the visual receptor model includes：The time phase that spatially interference strength is distributed, disturbs
Guan Xing, and the correlation matrix to various characteristics；
Described essential information, corresponding interference parameter of visual receptor model according to the visual receptor model, Yi Jishuan
Eye visual area information includes building information interference matrix：According to the essential information of the visual receptor model and to various characteristics
Correlation matrix, generate corresponding information of correlation matrix；Comprehensive binocular vision area, spatially interference strength distribution and interference
Temporal correlation information, generate corresponding interference strength matrix；By described information correlation matrix and the interference strength square
Battle array is multiplied, and obtains information interference matrix.
2. method according to claim 1, it is characterised in that the visual receptor model includes：Spatial sampling is experienced
Device, Gabor receptors.
3. method according to claim 1 and 2, it is characterised in that the essential information of the visual receptor model includes：
The receptive field of receptor, optimal frequency and phase place.
4. a kind of simulation system of spatial offset impaired vision, it is characterised in that the system includes：
Information interference matrix builds module, for building visual receptor model, and according to the basic of the visual receptor model
Information, the corresponding interference parameter of visual receptor model, and binocular vision area information is building information interference matrix；
Eigenvalue matrix acquisition module, for being processed the image for reading using the visual receptor model, is obtained
The eigenvalue matrix of the image；
Interference characteristic value matrix acquisition module, at the eigenvalue matrix by described information interference matrix with the image
Reason, obtains the eigenvalue matrix of Jing interference；
Image Reconstruction module, the eigenvalue matrix for being disturbed using the Jing carries out the reconstruct of image, so as to realize that space is wrong
The simulation of position impaired vision；
The corresponding interference parameter of the visual receptor model includes：The temporal correlation that spatially interference strength is distributed, disturbs,
And the correlation matrix to various characteristics；
Described essential information, corresponding interference parameter of visual receptor model according to the visual receptor model, Yi Jishuan
Eye visual area information includes building information interference matrix：According to the essential information of the visual receptor model and to various characteristics
Correlation matrix, generate corresponding information of correlation matrix；Comprehensive binocular vision area, spatially interference strength distribution and interference
Temporal correlation information, generate corresponding interference strength matrix；By described information correlation matrix and the interference strength square
Battle array is multiplied, and obtains information interference matrix.
5. system according to claim 4, it is characterised in that the visual receptor model includes：Spatial sampling is experienced
Device, Gabor receptors.
6. the system according to claim 4 or 5, it is characterised in that the essential information of the visual receptor model includes：
The receptive field of receptor, optimal frequency and phase place.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103985115A (en) * | 2014-04-01 | 2014-08-13 | 杭州电子科技大学 | Image multi-strength edge detection method having visual photosensitive layer simulation function |
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| AU2003286453A1 (en) * | 2002-10-15 | 2004-05-04 | David J. Mcintyre | System and method for simulating visual defects |
| TWI366393B (en) * | 2007-10-12 | 2012-06-11 | Taiwan Tft Lcd Ass | Method and apparatus of measuring image-sticking of a display device |
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| CN103985115A (en) * | 2014-04-01 | 2014-08-13 | 杭州电子科技大学 | Image multi-strength edge detection method having visual photosensitive layer simulation function |
Non-Patent Citations (3)
| Title |
|---|
| (In) Sensitivity to spatial distortion in natural scenes;Peter J. Bex;《Journal of Vision》;20100224;第10卷(第2期);第1-3页 * |
| An accessible,adaptive and multimodal digital TV framework and corresponding development tool;Pradipta Biswas 等;《Science and Information Conference 2013》;20131009;28-37 * |
| Development of a visual impairment simulator using the Microsoft XNA Framework;J Lewis 等;《Proc.Intl Conf.Disability》;20120912;399-407 * |
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