CN104182980A - 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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- CN104182980A CN104182980A CN201410418326.6A CN201410418326A CN104182980A CN 104182980 A CN104182980 A CN 104182980A CN 201410418326 A CN201410418326 A CN 201410418326A CN 104182980 A CN104182980 A CN 104182980A
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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, relate in particular to a kind of analogy method and system of spatial offset impaired vision.
Background technology
Spatial offset (distortion) damage is in vision disease, particularly the common a kind of impaired vision form of amblyopia disease.Be embodied in spatially distortion of image, distortion that patient perceives, lines are crooked, and even dislocation appears in the spatial information of image.This damage has had a strong impact on patient's daily life, but can not get for a long time due attention.Clinician and public, the cognition of impaired vision is still rested on to simply level such as " blurred vision ".
At present, the simulation that spatial offset is damaged is the passage of the many spatial frequencys based on mankind sensor model mainly: in the mankind's primary visual cortex, have the full-time image information of processing different feeling open country, spatial frequency, top optimization direction, phase place of specific neuron, and the information after processing is sent to more senior visual cortex, and then form visual cognition.But in the patient of dislocation damage that has living space, the neuron of primary visual cortex has been accepted the information such as wrong receptive field or spatial frequency, and then integrate wrong information to senior visual cortex, made the image of last visual cognition occur distortion, modification.
The information of this dislocation is considered to the internal interference of mankind's consciousness always.In normal person's perception loop, though also there is the existence of similar internal interference, because neuron receptive field is overlapped, information has redundancy, and brain inside has ELIMINATION OF ITS INTERFERENCE mechanism to exist, and makes normal person's consciousness internal interference little on visual cognition impact.But in the patient's of impaired vision brain, consciousness internal interference is difficult to the normal mechanism of brain the degree suppressing greatly, and then visual cognition has been produced to huge interference.
And this internal interference all presents certain correlativity between space, time and neuron.The appearance of internal interference is that damage is relevant, and in general, in spatial offset damage, the internal interference of patient's eyes overlapping region is higher.Same neuronic internal interference size is that free correlativity is right within the scope of certain hour.And characteristic---as receptive field, spatial frequency, top optimization direction, phase place etc.---is the dislocation of more easily generation information between similar neuron.
At work, based on above model, how correctly to select visual cortex transaction module, internal interference and characteristic model to build realistic model, be this area research of puzzlement person's critical problem with the situation that virtual space dislocation damages exactly always.Existing represent damage mode only can be to simple geometric figure as grating, Gabor spot is processed represents, but shown in figure too simple, uninteresting, and depart from real daily life, directly perceived not.
Summary of the invention
The analogy method and the system that the object of this invention is to provide a kind of spatial offset impaired vision, for the dislocation of virtual space exactly damage patient's visual perception situation.
The object of the invention is to be achieved through the following technical solutions:
An analogy method for spatial offset impaired vision, the method comprises:
Build visual receptor model, and according to the essential information of this visual receptor model, interference parameter that this visual receptor model is corresponding, and binocular vision district information builds information interference matrix;
Utilize described visual receptor model to process the image reading, obtain the eigenvalue matrix of this image;
The eigenvalue matrix of described information interference matrix and this image is processed, obtained the eigenvalue matrix through disturbing;
Utilize the described eigenvalue matrix through interference to carry out the reconstruct of image, thus the simulation of spatial offset impaired vision.
A simulation system for spatial offset impaired vision, this system comprises:
Information interference matrix builds module, for building visual receptor model, and according to the essential information of this visual receptor model, interference parameter that this visual receptor model is corresponding, and binocular vision district information builds information interference matrix;
Eigenvalue matrix acquisition module, for utilizing described visual receptor model to process the image reading, obtains the eigenvalue matrix of this image;
Interference characteristic value matrix acquisition module, for the eigenvalue matrix of described information interference matrix and this image is processed, obtains the eigenvalue matrix through disturbing;
Image Reconstruction module, for utilizing the described eigenvalue matrix through interference to carry out the reconstruct of image, thus the simulation of spatial offset impaired vision.
As seen from the above technical solution provided by the invention, by employing, press close to the image transaction module of human perception mode, carry out simulating human consciousness disturbance regime, the method is changed the situation that classic method can only be processed, simulate simple geometry figure, can to natural image, be processed efficiently, and presented, there is damage simulation application scene wide, simulation reduction degree advantages of higher.Through repeatedly facts have proved, output image of the present invention is directly perceived, can reduce efficiently consciousness degree of impairment.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The process flow diagram of the analogy method of a kind of spatial offset impaired vision that Fig. 1 provides for the embodiment of the present invention one;
The schematic diagram of the simulation system of a kind of spatial offset impaired vision that Fig. 2 provides for the embodiment of the present invention two.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to protection scope of the present invention.
At present, be limited by inveteracy old idea, clinician and the public harm that is difficult to the cognition spatial offset damage that I shall appreciate it as a personal favour, be only confined in professional researchist the concern of spatial offset damage.The embodiment of the present invention provides a kind of technology that represents spatial offset damage, can describe vividly, intuitively spatial offset damage phenomenon, mechanism, to improve clinician and public cognitive levels, causes its enough attention.
Embodiment mono-
The process flow diagram of the analogy method of a kind of spatial offset impaired vision that Fig. 1 provides for the embodiment of the present invention one.As shown in Figure 1, the method mainly comprises the steps:
Step 11, build visual receptor model, and according to the essential information of this visual receptor model, interference parameter that this visual receptor model is corresponding, and binocular vision district information builds information interference matrix.
In the embodiment of the present invention, described visual receptor model mainly comprises: spatial sampling receptor, Jia Bai (Gabor) receptor.Spatial sampling receptor principle YuV1 district's neuron information processing principle is similar, and next stage is collected, preserves and transferred to image in its receptive field; Jia Bai (Gabor) receptor be take gal cypress function as basis, belongs to windowed FFT, and Gabor function can extract the feature of image correlation on frequency domain different scale, different directions.
The essential information of described visual receptor model mainly comprises: the receptive field of receptor, optimal frequency and phase place etc.
Interference parameter corresponding to described visual receptor model mainly comprises: the temporal correlation that on space, interference strength distributes, disturbs, and the correlation matrix of receptor characteristic etc.On space, interference strength distributes, and to be generally image central area little, more larger to surrounding zone intensity; There is the correlativity of disturbing between the receptor of similar characteristic (as receptive field, optimal frequency, phase place etc.) higher, and have the interference strength between the receptor of similar characteristic similar.
Specifically, be according to the essential information of this visual receptor model and the correlation matrix to various characteristics, generate corresponding information correlativity matrix; Meanwhile, the temporal correlation information that on comprehensive binocular vision district, space, interference strength distributes and disturbs, generates corresponding interference strength matrix; Finally, by described information correlativity matrix and described interference strength matrix multiple, acquired information interference matrix.
Step 12, utilize described visual receptor model to process the image reading, obtain the eigenvalue matrix of this image.
Step 13, the eigenvalue matrix of described information interference matrix and this image is processed, obtained the eigenvalue matrix through disturbing.
Step 14, utilize and describedly through the eigenvalue matrix of disturbing, carry out the reconstruct of image, thus the simulation of spatial offset impaired vision.
Repeat above-mentioned steps, until simulation finishes.
The embodiment of the present invention is pressed close to the image transaction module of human perception mode by employing, carry out simulating human consciousness disturbance regime, the method is changed the situation that classic method can only be processed, simulate simple geometry figure, can to natural image, be processed efficiently, and presented, there is damage simulation application scene wide, simulation reduction degree advantages of higher.Through repeatedly facts have proved, output image of the present invention is directly perceived, can reduce efficiently consciousness degree of impairment.
Embodiment bis-
The schematic diagram of the simulation system of a kind of spatial offset impaired vision that Fig. 2 provides for the embodiment of the present invention two.As shown in Figure 2, this system mainly comprises:
Information interference matrix builds module 21, for building visual receptor model, and according to the essential information of this visual receptor model, interference parameter that this visual receptor model is corresponding, and binocular vision district information builds information interference matrix;
Eigenvalue matrix acquisition module 22, for utilizing described visual receptor model to process the image reading, obtains the eigenvalue matrix of this image;
Interference characteristic value matrix acquisition module 23, for the eigenvalue matrix of described information interference matrix and this image is processed, obtains the eigenvalue matrix through disturbing;
Image Reconstruction module 24, for utilizing the described eigenvalue matrix through interference to carry out the reconstruct of image, thus the simulation of spatial offset impaired vision.
Further, described visual receptor model comprises: spatial sampling receptor, Gabor receptor.
Further, the essential information of described visual receptor model comprises: the receptive field of receptor, optimal frequency and phase place.
Further, interference parameter corresponding to described visual receptor model comprises: the temporal correlation that on space, interference strength distributes, disturbs, and the correlation matrix to various characteristics.
Further, described according to the essential information of this visual receptor model, interference parameter that this visual receptor model is corresponding, and binocular vision district information builds information interference matrix and comprises:
According to the essential information of this visual receptor model and the correlation matrix to various characteristics, generate corresponding information correlativity matrix;
The temporal correlation information that on comprehensive binocular vision district, space, interference strength distributes and disturbs, generates corresponding interference strength matrix;
By described information correlativity matrix and described interference strength matrix multiple, acquired information interference matrix.
It should be noted that, in the specific implementation of the function that each functional module comprising in said system realizes each embodiment above, have a detailed description, therefore here repeat no more.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only the division with above-mentioned each functional module is illustrated, in practical application, can above-mentioned functions be distributed and by different functional modules, completed as required, the inner structure of the system of being about to is divided into different functional modules, to complete all or part of function described above.
Through the above description of the embodiments, those skilled in the art can be well understood to above-described embodiment and can realize by software, and the mode that also can add necessary general hardware platform by software realizes.Understanding based on such, the technical scheme of above-described embodiment can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
The above; be only the present invention's embodiment preferably, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (10)
1. an analogy method for spatial offset impaired vision, is characterized in that, the method comprises:
Build visual receptor model, and according to the essential information of this visual receptor model, interference parameter that this visual receptor model is corresponding, and binocular vision district information builds information interference matrix;
Utilize described visual receptor model to process the image reading, obtain the eigenvalue matrix of this image;
The eigenvalue matrix of described information interference matrix and this image is processed, obtained the eigenvalue matrix through disturbing;
Utilize the described eigenvalue matrix through interference to carry out the reconstruct of image, thus the simulation of spatial offset impaired vision.
2. method according to claim 1, is characterized in that, described visual receptor model comprises: spatial sampling receptor, Gabor receptor.
3. method according to claim 1 and 2, is characterized in that, the essential information of described visual receptor model comprises: the receptive field of receptor, optimal frequency and phase place.
4. method according to claim 1 and 2, is characterized in that, interference parameter corresponding to described visual receptor model comprises: the temporal correlation that on space, interference strength distributes, disturbs, and the correlation matrix to various characteristics.
5. method according to claim 4, is characterized in that, described according to the essential information of this visual receptor model, interference parameter that this visual receptor model is corresponding, and binocular vision district information builds information interference matrix and comprises:
According to the essential information of this visual receptor model and the correlation matrix to various characteristics, generate corresponding information correlativity matrix;
The temporal correlation information that on comprehensive binocular vision district, space, interference strength distributes and disturbs, generates corresponding interference strength matrix;
By described information correlativity matrix and described interference strength matrix multiple, acquired information interference matrix.
6. a simulation system for spatial offset impaired vision, is characterized in that, this system comprises:
Information interference matrix builds module, for building visual receptor model, and according to the essential information of this visual receptor model, interference parameter that this visual receptor model is corresponding, and binocular vision district information builds information interference matrix;
Eigenvalue matrix acquisition module, for utilizing described visual receptor model to process the image reading, obtains the eigenvalue matrix of this image;
Interference characteristic value matrix acquisition module, for the eigenvalue matrix of described information interference matrix and this image is processed, obtains the eigenvalue matrix through disturbing;
Image Reconstruction module, for utilizing the described eigenvalue matrix through interference to carry out the reconstruct of image, thus the simulation of spatial offset impaired vision.
7. system according to claim 1, is characterized in that, described visual receptor model comprises: spatial sampling receptor, Gabor receptor.
8. according to the system described in claim 6 or 7, it is characterized in that, the essential information of described visual receptor model comprises: the receptive field of receptor, optimal frequency and phase place.
9. according to the system described in claim 6 or 7, it is characterized in that, interference parameter corresponding to described visual receptor model comprises: the temporal correlation that on space, interference strength distributes, disturbs, and the correlation matrix to various characteristics.
10. system according to claim 9, is characterized in that, described according to the essential information of this visual receptor model, interference parameter that this visual receptor model is corresponding, and binocular vision district information builds information interference matrix and comprises:
According to the essential information of this visual receptor model and the correlation matrix to various characteristics, generate corresponding information correlativity matrix;
The temporal correlation information that on comprehensive binocular vision district, space, interference strength distributes and disturbs, generates corresponding interference strength matrix;
By described information correlativity matrix and described interference strength matrix multiple, acquired information interference matrix.
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| US20040156554A1 (en) * | 2002-10-15 | 2004-08-12 | Mcintyre David J. | System and method for simulating visual defects |
| US20090096778A1 (en) * | 2007-10-12 | 2009-04-16 | Taiwan Tft Lcd Association | Method and apparatus of detecting image-sticking of display device |
| 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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