CN101833543A - Naked-eye three-dimensional display method for characters - Google Patents
Naked-eye three-dimensional display method for characters Download PDFInfo
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- CN101833543A CN101833543A CN 201010165697 CN201010165697A CN101833543A CN 101833543 A CN101833543 A CN 101833543A CN 201010165697 CN201010165697 CN 201010165697 CN 201010165697 A CN201010165697 A CN 201010165697A CN 101833543 A CN101833543 A CN 101833543A
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- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 201000009487 Amblyopia Diseases 0.000 abstract description 3
- 201000010041 presbyopia Diseases 0.000 abstract description 3
- 208000010415 Low Vision Diseases 0.000 abstract 2
- 230000004303 low vision Effects 0.000 abstract 2
- 201000009310 astigmatism Diseases 0.000 abstract 1
- 238000007781 pre-processing Methods 0.000 abstract 1
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- 208000022372 Reading disease Diseases 0.000 description 1
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Abstract
The invention discloses a naked-eye three-dimensional display method for characters and aims to provide a method which can separate the characters from a background and output the characters to a naked-eye display device in a three-dimension manner. The method comprises the following steps of: (a) acquiring an image; (b) preprocessing the acquired image; (c) separating the characters from the background in the image; (d) vectorizing, magnifying and typesetting the separated characters; (e) generating a left-right-eye image by a binocular parallax method; and (f) generating an image which can be displayed by the naked-eye three-dimensional display device by interframe parity interleaving. Three-dimensional data with strong contrast can be acquired by the steps, so that all people with low vision can clearly see the displayed data. The method is suitable for all the people with low vision, such as presbyopia, astigmatism, amblyopia and the like.
Description
Technical field
The present invention relates to a kind of naked-eye three-dimensional display method for characters, relate in particular to a kind ofly with literal and background separation, and three dimensional stress exports the method for bore hole display device to.
Background technology
Low eyesight crowd, especially patient such as amblyopia and presbyopia exists the obstacle of various degree when reading common printed product such as books, newspaper, enlargement factor is not enough, readability is poor, literal edge identification difficulty and products such as traditional magnifier, presbyopic glasses exist, problems such as edge deformation have seriously influenced low eyesight crowd's reading activities and daily life.But prior art often all is based on the optical property form, or the simple two-dimensional multiplying arrangement, can not realize coordinating mutually with user's real-time reading, and speed, sharpness and literal edge identification effect is often all unsatisfactory.
Therefore, be necessary to invent a kind of algorithm,, and generate the extremely strong three dimensional stress data of contrast, be presented in face of the user, reduce its reading difficulty greatly by the bore hole dimension display technologies with Word message and background separation.
It is the document of CN101466011A that State Intellectual Property Office of the People's Republic of China discloses publication number on June 24th, 2009, name is called the device that improves reading disorder of low eyesight crowd, it comprises image unit, image storage unit, video encoding unit and display unit; Described image unit is used for acquisition of image data; Image storage unit is used to preserve described view data; Described video encoding unit is used for the coded image data that described image storage unit is preserved is become vision signal; Described display unit is used to show described vision signal.The weak point of this scheme is to adopt brightness and contrast's variation to make literal comparatively obvious, but only depends on brightness and contrast's variation to can not get enough distinct image for some special low eyesight colonies.
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide a kind of at low eyesight patient with literal and background separation, and generate the extremely strong three dimensional stress data of contrast, be presented on method in face of the user by the bore hole dimension display technologies.
To achieve these goals, the invention provides a kind of naked-eye three-dimensional display method for characters, this method may further comprise the steps:
(a) image acquisition; (b) image of gathering is carried out pre-service; (c) literal in the image is separated with background; (d) isolated literal is carried out vector quantization, amplification, composing operation; (e) utilize the binocular parallax method to generate the right and left eyes image; (f) generating by the interframe oem character set can be for the image of bore hole three-dimensional display apparatus demonstration.After above step, can obtain the very strong three dimensional stress data of contrast, allow all low eyesight crowds can both see shown data clearly.
As preferably, step (b) comprises following substep: the high-definition image that step (a) is gathered carries out pre-service, and irrelevant information and noise in the removal of images strengthens for information about detectability and reduced data.Can improve the reliability that feature extraction, image segmentation, coupling and identification etc. are operated after advancing above-mentioned processing.
As preferably, step (d) comprises following substep: isolated literal from background, it is carried out lines coupling and vector quantization, vector data is amplified, enters a new line automatically and set type, and the view data dot matrixization after will handling again according to the size of output image, the part that needs highlight is carried out mark.
As preferably, step (e) comprises following substep: by beholder and the distance of display device and the literal enlargement factor of Set For Current of sensor acquisition, what calculating need highlight that optimum between part and the background watches highlights distance, utilizes the binocular parallax method to generate right and left eyes two width of cloth images respectively.
The invention has the beneficial effects as follows, make literal have high contrast by the three dimensional stress display process, eliminated low eyesight crowd's Dyslexia, made things convenient for patients such as amblyopia and presbyopia to read common printed product such as books, newspaper, made also study and work successfully of the very poor particular patients ' of eyesight.
Description of drawings
Fig. 1 is the block diagram according to a kind of literal naked-eye three-dimensional display device of the present invention;
Fig. 2 is the process flow diagram according to a kind of naked-eye three-dimensional display method for characters of the present invention;
Among the figure: 1, control module, 2, the image input block, 3, the image pretreatment unit, 4, word recognition unit, 5, the image three-dimensional unit, 6, the 3-D display unit, 7, storage unit.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical scheme of inventing is described in further detail.
Embodiment: as shown in Figure 1, the control module 1 of the literal naked-eye three-dimensional display device of present embodiment is connected with image input block 2, image pretreatment unit 3, word recognition unit 3, image three-dimensional unit 4,3-D display unit 5 respectively, image input block 2 is connected with storage unit 7, storage unit 7 is connected with image three-dimensional unit 5, and image pretreatment unit 3, word recognition unit 4, image three-dimensional unit 5,3-D display unit 6 are linked in sequence.
Control module 1 comprises controller module, system flow control module, image output control module, button, and button links to each other with controller module, and the system flow control module links to each other with controller module, image output control module.Controller module wherein, its major function is to accept user's instruction, and this instruction is sent in the system flow control module goes.In the present embodiment, button has 8, control 8 orders, the corresponding button of each order, be respectively power key, reset key, illumination key, the key that fixes, increase key, reduce key, key and mode key are set, any control command of user in reading process all passes to controller module by button.The system flow control module is responsible for controlling the operation of total system, and sends current system running state to the image output control module.Image output control module major function is the image of synthetic current system running state, thereby which state is the current system of prompting user run to, and this is very important for visually impaired people user.In the present embodiment, system flow control module and image output control module are all realized based on the TMS320DM6437ZWT6 that TI company produces.
The internal module annexation of image input block 2 is: camera lens module, digital image acquisition module, A/D modular converter are linked in sequence.Camera lens module is collected light and is entered the digital image acquisition module of induction light intensity when work, converts image analoging signal to digital signal by the A/D modular converter again and enters next link.In the present embodiment, camera lens module is made up of anti-cover glass, CMOS image sensor and the cmos image sensor of dazzling ring, optical lens, IR optical filtering, image sensor of anti-parasitic light in regular turn.Digital image acquisition module and A/D modular converter adopt the OV8812-A67A of the OV88XX series of OmniVisionTechnologies company product.
Image pretreatment unit 3 internal module annexations are: automatic exposure control module, automatic gain control module, Automatic white balance control module, auto brightness control module are linked in sequence, the auto brightness control module is connected with the color saturation control module, color saturation control module, tone control module, acutance control module, gamma correction control module are linked in sequence, and the gamma correction control module is connected with the picture quality display module.
The automaticity of automatic exposure control module is the highest, and being provided with is automatic decision, can not artificially revise, use this set in most of the cases can obtain a normal image, this set designs in order farthest to reduce misoperation, all is by self-determining as metering mode, ISO setting or the like.The major function of automatic gain control module is the view data of reading images input block 2 storages from storage unit 7, and removes the noise spot in the image, to improve the accuracy of literal identification.The Automatic white balance control module is utilized colour examining temperature system, measures the relative scale of ruddiness and blue light, and again according to this data adjustment exposure, color is finally reduced in the gain that produces the red, green, blue electric signal.The advantage of Automatic white balance maximum is; Clean simply, soon.The major function of auto brightness control module is with the image enhancing contrast ratio behind the removal noise, and according to the adaptive adjustment brightness of the characteristic of image itself, also is in order to increase discrimination.The major function of color saturation control module is, when the white light composition that spectrum colour mixes more, when being unsaturated, perhaps when the reflectivity height of object to a certain narrower wave band of spectrum, and the very low or not reflection to the reflectivity of other wavelength, be the saturation degree of color when too high, regulate the purity of color automatically.When image sharpness is high, can allows you think that the edge is clear especially sharp keen when videotex, picture, but allow the people think that some is dazzling unavoidably; When image sharpness is low, can allow you think that the edge is very unintelligible when videotex, picture.After image acquisition, the acutance control module can be adjusted to optimum condition automatically with image.The function of tone control module is to adjust lightness, promptly is that the lightness of things outwardness, the light source colour of form and aspect are reflected through overregulating really.The scope of tone is 0～255, is 256 kinds of tones altogether.The function of gamma correction control module is to make whole screen show that evenly color, white balance seamlessly transit, and reduce mosaic phenomenon to greatest extent.Strengthen picture stereovision, uniformity coefficient, effectively improve image quality.
Image three-dimensional unit 5 internal module annexations are: image binaryzation module, edge discrimination module, odd even 3-D view generation module are linked in sequence.The view data that transmits for word recognition unit, earlier by the image binaryzation module with its binaryzation, come out by the edge-description of edge discrimination module then literal, the part that judgement need highlight, utilize the binocular parallax method then, image is divided into left-eye image and eye image two parts, then by odd even 3-D view generation module with its staggered splicing after, export on the 3-D display unit 6.The binocular parallax method is to utilize the parallax barrier that is placed between backlight module and LCD panel, under the stereo display pattern, in the time of should being presented on the liquid crystal display by the image that left eye is seen, blocks right eye with opaque striped; In like manner, in the time of should being presented on the liquid crystal display by the image that right eye is seen, can block left eye,, make the onlooker see the 3D image by the viewable pictures of left eye and right eye is separated with opaque striped.Interframe oem character set technology is divided into odd-numbered scan lines and even-line interlace line with vertical frequency, odd-numbered scan lines presents left-eye image, and the even-line interlace line presents the right eye scene, utilize the staggered at a high speed method strange, the even-line interlacing line that shows, be sustainable generation parallax, thereby reach the purpose that right and left eyes is watched different images.
In the present embodiment, image pretreatment unit 3, word recognition unit 4, image three-dimensional unit 5 are all realized based on the TMS320DM6437ZWT6 chip of TI company.Storage unit 7 is realized by SAMSUNG storer K3F2808UOA-YCB0 and HYNIX storer HY57V281620HCT-H.
3-D display unit 6 adopts the vision fence technology display of Sharp, can make them enter right and left eyes respectively, to make the visual effect of a kind of 3D by utilizing some row parallax barriers control opticpaths.
As shown in Figure 2, the present invention can be with after the view data process pre-service of gathering, separate text and background, with word vectorization and regulate contrast, size back merges with the background of regulating through noise reduction, contrast, beholder and the distance of display device and the literal enlargement factor of Set For Current that obtains by sensor then, what calculating need highlight that optimum between part and the background watches highlights distance, utilize the binocular parallax method to generate right and left eyes two width of cloth images respectively, image is exported to the bore hole three-dimensional display apparatus according to specific form.
Claims (4)
1. a naked-eye three-dimensional display method for characters is characterized in that, this method may further comprise the steps:
(a) image acquisition;
(b) image of gathering is carried out pre-service;
(c) literal in the image is separated with background;
(d) isolated literal is carried out vector quantization, amplification, composing operation;
(e) utilize the binocular parallax method to generate the right and left eyes image;
(f) generating by the interframe oem character set can be for the image of bore hole three-dimensional display apparatus demonstration.
2. naked-eye three-dimensional display method for characters according to claim 1, it is characterized in that, step (b) comprises following substep: the high-definition image that step (a) is gathered carries out pre-service, and the information and the noise that have nothing to do in the removal of images strengthen for information about detectability and reduced data.
3. naked-eye three-dimensional display method for characters according to claim 1, it is characterized in that, step (d) comprises following substep: isolated literal from background, it is carried out lines coupling and vector quantization, vector data is amplified, enters a new line automatically and set type, and the view data dot matrixization after will handling again according to the size of output image, the part that needs highlight is carried out mark.
4. according to claim 1 or 3 described naked-eye three-dimensional display method for characters, it is characterized in that, step (e) comprises following substep: by beholder and the distance of display device and the literal enlargement factor of Set For Current of sensor acquisition, what calculating need highlight that optimum between part and the background watches highlights distance, utilizes the binocular parallax method to generate right and left eyes two width of cloth images respectively.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767972A (en) * | 2015-04-02 | 2015-07-08 | 深圳市虚拟现实科技有限公司 | Visual defect help system and method |
| CN112802198A (en) * | 2020-12-25 | 2021-05-14 | 佛山欧神诺云商科技有限公司 | Two-dimensional image three-dimensional interaction design method, terminal and storage device |
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| CN1126344A (en) * | 1994-02-01 | 1996-07-10 | 三洋电机株式会社 | Method of converting two-dimensional images into three-dimensional images |
| CN101315664A (en) * | 2008-05-27 | 2008-12-03 | 昆明理工大学 | Text image preprocessing method for character recognition |
| CN101466011A (en) * | 2009-01-07 | 2009-06-24 | 北京奥美达科技有限公司 | Device for improving reading disorder of low eyesight crowd |
-
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- 2010-05-07 CN CN201010165697XA patent/CN101833543B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126344A (en) * | 1994-02-01 | 1996-07-10 | 三洋电机株式会社 | Method of converting two-dimensional images into three-dimensional images |
| CN101315664A (en) * | 2008-05-27 | 2008-12-03 | 昆明理工大学 | Text image preprocessing method for character recognition |
| CN101466011A (en) * | 2009-01-07 | 2009-06-24 | 北京奥美达科技有限公司 | Device for improving reading disorder of low eyesight crowd |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767972A (en) * | 2015-04-02 | 2015-07-08 | 深圳市虚拟现实科技有限公司 | Visual defect help system and method |
| CN104767972B (en) * | 2015-04-02 | 2018-06-15 | 深圳市虚拟现实科技有限公司 | A kind of defects of vision help system and method |
| CN112802198A (en) * | 2020-12-25 | 2021-05-14 | 佛山欧神诺云商科技有限公司 | Two-dimensional image three-dimensional interaction design method, terminal and storage device |
| CN112802198B (en) * | 2020-12-25 | 2024-06-11 | 佛山欧神诺云商科技有限公司 | Two-dimensional image three-dimensional interaction design method, terminal and storage device |
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