CN201055465Y - Portable electronic vision aiding machine - Google Patents
Portable electronic vision aiding machine Download PDFInfo
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- CN201055465Y CN201055465Y CNU2007201120487U CN200720112048U CN201055465Y CN 201055465 Y CN201055465 Y CN 201055465Y CN U2007201120487 U CNU2007201120487 U CN U2007201120487U CN 200720112048 U CN200720112048 U CN 200720112048U CN 201055465 Y CN201055465 Y CN 201055465Y
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Abstract
The utility model discloses a portable electric visual aid. A control unit is respectively connected with an image input unit, an image processing unit, a character identifying unit, an intelligent judgment unit and an image output unit; the image input unit is connected with a storage unit; the storage unit is connected with the intelligent judgment unit; the image processing unit is connected with the character identifying unit, the intelligent judgment unit and the image output unit. With an optical and electric embedding system, the utility model transforms traditional reading material into clear and reasonable size and type-setting form through intelligence, which is good for reading by a reader with poor vision; considering no matter clarity or magnification times, the utility model is greatly better than that of the traditional visual aid. Moreover, with optical character transformation, the type-setting of character and image is transformed into the form convenient for automatic reading and provides convenience for reader with poor vision.
Description
Technical field
This utility model relates to a kind of electronic viewing aid, is a kind of low vision patient of improved effect that excuse me learns, electronics combines and the old people reads, the electronics multiplying arrangement of mobility.
Background technology
Low vision crowd, especially patient such as amblyopia and presbyopia exists the obstacle of various degree when reading common printed product such as books, newspaper, and there are not enough, the problems such as readability is poor, edge deformation of amplification in products such as traditional magnifier, presbyopic glasses, have seriously influenced low vision crowd's reading activities and daily life.But prior art often all is based on the optical property form, or simple multiplying arrangement, can not realize coordinating mutually with user's real-time reading, and speed, definition and effect is often all unsatisfactory.And for another one crowd---achromatopsia, traditional optical device also can't extend efficient help for it.
Therefore, be necessary to invent a kind of amplification system that combines based on optics and electronics.
Summary of the invention
The purpose of this utility model provides a kind of portable electronic vision aids.
Control unit in the portable electronic vision aids is connected with image input block, graphics processing unit, word recognition unit, intelligent decision unit, image output unit respectively, the image input block is connected with memory element, memory element is connected with the intelligent decision unit, and graphics processing unit is connected with word recognition unit, intelligent decision unit, image output unit.
The internal module annexation of described image input block is: camera lens module is connected with digital image acquisition module, A/D modular converter.
Graphics processing unit internal module annexation is: the automatic exposure control module is connected with automatic gain control module, AWB control module and auto brightness control module, the auto brightness control module is connected with the color saturation control module, the color saturation control module is connected with tone control module, acutance control module, gamma correction control module, and the gamma correction control module is connected with the picture quality display unit.
Intelligent decision unit internal module annexation is: standard words library module and context intelligent decision are searched module, statistics discrimination module, judged result output module and are connected.
This utility model is by optics and electronics embedded system, by size and typesetting format that intelligent conversion becomes the low vision patient of convenience of clear and rational to read, all is that traditional visual acuity aid institute is inaccessiable far away with traditional reading data on definition and amplification.And by optical character conversion, the composing of literal and picture is converted to the form of being convenient to automatic reading, for low vision patient provide read convenient.
Description of drawings
Fig. 1 portable electronic vision aids circuit block diagram;
Fig. 2 image input-cell circuitry of the present utility model block diagram;
Fig. 3 graphics processing unit circuit block diagram of the present utility model;
Fig. 4 intelligent decision element circuit of the present utility model block diagram;
The specific embodiment
As shown in Figure 1, control unit in the portable electronic vision aids is connected with image input block, graphics processing unit, word recognition unit, intelligent decision unit, image output unit respectively, the image input block is connected with memory element, memory element is connected with the intelligent decision unit, and graphics processing unit is connected with word recognition unit, intelligent decision unit, image output unit.
Control unit is made up of controller module and system control module, and controller module and system control module internal module annexation are: button and controller chip, system flow automatic control module, image output control module join.Controller module wherein, its major function is to accept the instruction of user, and this instruction is sent in the system control module by circuit board 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 is all by button, through the coding of system control module, the system flow automatic control module is responsible for controlling the operation of whole system, and sends current system running state to the voice suggestion control module.Image control module 6 is connected with control unit, and its major function is the image of the synthetic current system running state of control unit, thereby which state is the current system of prompting user run to.Picture cues is very important for visually impaired people's user.In the present embodiment, the ZR36441BGCF of system flow automatic control module and the picture cues control module ZR36 series of all producing based on ZORAN company realizes.
As shown in Figure 2, the internal module annexation of image input block is: camera lens module is connected with digital image acquisition module, A/D modular converter.When work camera lens module collect light and enter the induction zone digital image acquisition module of induction light intensity, become digital signal to enter next link analog signal conversion such as image and sound by the A/D modular converter again.In the present embodiment, camera lens module is made of for anti-coverslip, CMOS image sensor and the cmos image sensor device of dazzling ring, optical lens, IR filter lens, image sensor of anti-veiling glare in regular turn the optical imagery camera lens module.Digital image acquisition module and A/D modular converter adopt the OV9655 of the OV96XX series of OmniVision Technologies company product.
As shown in Figure 3, graphics processing unit internal module annexation is: the automatic exposure control module is connected with automatic gain control module, AWB control module and auto brightness control module, the auto brightness control module is connected with the color saturation control module, the color saturation control module is connected with tone control module, acutance control module, gamma correction control module, and the gamma correction control module is connected with the picture quality display module.
The major function of automatic exposure control module is that automaticity 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 operate miss, all is by self-determining as metering mode, ISO setting or the like.The major function of automatic gain control module is to read the view data of scanning input module storage from memory element, and removes the noise spot in the image, to improve the accuracy of literal identification.The single major function of AWB control is to make the large-screen splicing wall specification requirement that good color consistency be arranged, the thing that looks like white colour under ordinary ray seems not to be white just under darker light, can revise the change of light then automatically.The single major function of auto brightness control is with the image enhancing contrast ratio behind the removal noise, and according to the adaptive adjustment brightness of the characteristic of image itself, is in order to increase discrimination equally.The major function of color saturation control module is, the white light composition that mixes when spectral color the more, just heal when unsaturated, perhaps when the reflectance height of object to a certain narrower wave band of spectrum, and the very low or not reflection to the reflectance of other wavelength, the saturation of this color can be regulated the purity of color when high automatically.The function of acutance control module is when acutance is high, can allow you think that the edge is clear especially sharp keen when showing text, picture, but allow the people think that some is dazzling unavoidably, when acutance is low, can allow you think that the edge is very unintelligible when showing text, picture, after image acquisition, it all can be adjusted to optimum state automatically.The function of tone control module is to adjust lightness.The lightness of things objective reality, 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, the uniformity, effectively improve image quality.Be same drive current, its luminous intensity difference; Also there be the discrete of parameter between the different pins between the drive IC, with a slice drive IC, make the brightness of LCD display also present the discretization phenomenon like this, for solving the brightness irregularities that this discrete phenomena produces, except LCD being carried out the further refinement sorting, also need the control parameter that the demonstration module carries out is carried out initialization, guaranteed the brightness uniformity between module like this.Treatment of picture is the core of system.At first, on original photographic head data, get partial data,, be mapped in the intermediate layer buffer of LCD or VGA size, in this process, simultaneously interpolation result is carried out brightness, contrast adjustment according to quick bilinear interpolation algorithm according to the view-finder size.When handling black white image, also need in interim buffer, carry out the binaryzation operation.In conjunction with the recognition result information in the word recognition unit output module integration entire image, and send the intelligent decision unit to.
As shown in Figure 4, internal module annexation in intelligent decision unit is: standard words library module and context intelligent decision are searched module, statistics discrimination module, judged result output module and are connected.The dictionary that contains a large amount of Chinese and englishes in the standard words library module is to search the standard that module provides intelligent decision for the context intelligent decision.The context intelligent decision is searched module each is searched all speech by the recognition result literal that word recognition unit identification draws in the standard words library module, and with in fact hereinafter comparing of this character in the recognition result, if in fact hereinafter all not the having of recognition result can find corresponding word in the standard words library module, so just think that this word can not become speech, and this result is passed to the statistics discrimination module.The one-tenth speech rate of all characters in the statistics discrimination module statistics recognition result full text.Through a large amount of facts have proved, if in the passage all characters add assembly speech quantity divided by total number of characters of article less than certain numerical value, can think that so this section literal is insignificant mess code.In reading process, if user is mistaken with written historical materials placement direction made of paper accidentally, though can draw the identification conclusion so, but nonsensical mess code.Through the judgement of statistics identification module, effectively whether the result that can draw this time scanning identification conclusion.By system's automatic flow control module image is rotated operation, and carries out identification process again, rotate to the tram of the document up to image, the position that can be identified just, this result will export elementary area to.
In the present embodiment, graphics processing unit, word recognition unit, intelligent decision unit are all realized based on the ZR36 family chip of ZORAN company.In the present embodiment, adopt the ZR36441BGCF of the ZR36 series of ZORAN company product.Memory element 7 is realized by SAMSUNG memorizer K3F2808UOA-YCB0 and HYNIX memorizer HY57V281620HCT-H.
The image output unit is to be finished by OV528 and OV9655 that OmniVision Technologies company produces.OV528 carries out PC control by the SCCB interface to OV9655, comprises contrast, brightness, saturation, white balance and automatic exposure, synchronizing signal position and polarity output, frame rate and data output format control etc.PWDN is that power consumption mode is selected, and is normal mode during low level, is low-power consumption mode during high level.PCLK, HREF, VSYNC are respectively a frequency and row field synchronization output signal line.EZPROM selects 24C64 for use.OV528 obtains inputting video data by utilizing camera interface from pick off OV9655, and can guarantee real time of data transmission, user is at host computer (PC, PDA, mobile phone etc.) after sending the shooting instruction on, the system acquisition one frame still image OV528 that makes a gift to someone carries out date processing, finish color correction, JPEG compression and decoding etc., after then data being delivered to that SRAM stores or directly being transferred to host computer and handling, the form of the ready data in the interim buffer by tft lcd support brushed in the lcd/vga buffer by interface.Target may be LCD (320 * 240) and VGA (640 * 480), what two display-objects used is same road signal, is the output of lcd controller, when switching to the VGA pattern, lcd controller is provided with by the parameter of VGA, and its output signal is converted to the VGA signal by the DA change-over circuit.
Although in conjunction with a limited number of embodiment this utility model has been described, those skilled in the art obviously know many modifications and variant in view of the above.Accompanying Claim is intended to the modification and the variant that comprise that these meet true spirit of the present utility model and scope.
Claims (4)
1. portable electronic vision aids, it is characterized in that control unit is connected with image input block, graphics processing unit, word recognition unit, intelligent decision unit, image output unit respectively, the image input block is connected with memory element, memory element is connected with the intelligent decision unit, and graphics processing unit is connected with word recognition unit, intelligent decision unit, image output unit.
2. a kind of portable electronic vision aids according to claim 1, it is characterized in that the internal module annexation of described image input block is: camera lens module is connected with digital image acquisition module, A/D modular converter.
3. a kind of portable electronic vision aids according to claim 1, it is characterized in that described graphics processing unit internal module annexation is: the automatic exposure control module is connected with automatic gain control module, AWB control module and auto brightness control module, the auto brightness control module is connected with the color saturation control module, the color saturation control module is connected with tone control module, acutance control module, gamma correction control module, and the gamma correction control module is connected with the picture quality display unit.
4. a kind of portable electronic vision aids according to claim 1 is characterized in that described intelligent decision unit internal module annexation is: standard words library module and context intelligent decision are searched module, statistics discrimination module, judged result output module and are connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007201120487U CN201055465Y (en) | 2007-07-17 | 2007-07-17 | Portable electronic vision aiding machine |
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| CNU2007201120487U CN201055465Y (en) | 2007-07-17 | 2007-07-17 | Portable electronic vision aiding machine |
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| CNU2007201120487U Expired - Fee Related CN201055465Y (en) | 2007-07-17 | 2007-07-17 | Portable electronic vision aiding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111783187A (en) * | 2019-04-03 | 2020-10-16 | 中山市京灯网络科技有限公司 | Brightening sharing platform application system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111783187A (en) * | 2019-04-03 | 2020-10-16 | 中山市京灯网络科技有限公司 | Brightening sharing platform application system |
| CN111783187B (en) * | 2019-04-03 | 2023-12-22 | 京灯(广东)信息科技有限公司 | Brightening sharing platform application system |
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Assignee: Hangzhou Rejoin Technology Co., Ltd. Assignor: Li Xiang Contract record no.: 2013330000085 Denomination of utility model: Portable electronic vision aiding machine Granted publication date: 20080507 License type: Exclusive License Record date: 20130422 |
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Effective date of registration: 20130801 Address after: 310013, room 609, A, Zhejiang Science Park, 525 Xixi Road, Xihu District, Zhejiang, Hangzhou Patentee after: Hangzhou Rejoin Technology Co., Ltd. Address before: Hangzhou City, Zhejiang Province, Wensanlu Road 383, China 310012 family C4-902 Patentee before: Li Xiang |
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