CN219370499U

CN219370499U - Braille recognition device

Info

Publication number: CN219370499U
Application number: CN202223300471.3U
Authority: CN
Inventors: 王开来; 钟俊豪
Original assignee: Guangzhou City University of Technology
Current assignee: Guangzhou City University of Technology
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-07-18
Anticipated expiration: 2032-12-09

Abstract

The utility model provides a braille identification device, which comprises a box body, a camera, a light guide plate and a light source, wherein the light guide plate and the light source are fixedly arranged in the box body; the light is focused on the braille data through the lateral light source, the braille data can be clearly shot by using the camera, the height characteristics of the braille points are converted into visual gray characteristics, and the separation problem of braille convex points and the background is solved, so that braille can be better identified, the braille identification precision is improved, and the operation is simple.

Description

Braille recognition device

Technical Field

The utility model relates to the technical field of braille identification equipment, in particular to a braille identification device.

Background

At present, the braille books mainly manufactured in the special mode are in the braille book field, the braille books are high in price, huge in size and extremely small in publishing quantity, a large amount of braille books are difficult to purchase and read for the blind person group, and meanwhile, the blind person is inconvenient to go out, so that the braille touch reader is developed and can be applied to the use aspect of a computer, but due to the fact that the braille book is complex in function, high in price, high in learning cost and difficult to bear for the blind person group. In addition, the braille reader is not optimized in relation to reading, so that a large number of braille books cannot be acquired, and the reading process is operated to solve the problem; for example, the Chinese patent application number is 202210332760.7 and the publication date is 2022.06.14, which discloses a braille electronic book, comprising a camera, a communication module, a data storage module, a braille display module, a voice playing module, a microprocessor and a placement frame; the communication module is used for communicating with the upper computer to realize the input of text information; the camera is used for shooting an image of the text data to be recorded on the placement frame, and the microprocessor is used for identifying the text information in the image; the acquired text information is stored in a storage module; after the text information is obtained, the microprocessor converts the text information into voice information, plays the voice information through the voice playing module and/or converts the text information into a driving signal, and drives the braille display module to display corresponding braille through the driving signal, so that the content on the common paper printed product can be read, and the problem that the conventional braille reader is required to be matched with a computer for use is solved. However, when the camera of the document shoots images of braille data, the images shot by the camera are not clear due to uneven brightness and insufficient light intensity of the images shot on the braille data, and recognition errors occur in the process of carrying out image graying processing, so that the braille recognition accuracy is affected. For this purpose, a braille recognition device is proposed.

Disclosure of Invention

The utility model aims to provide a braille identification device, which irradiates light on braille data through a lateral light source, can clearly shoot the braille data by using a camera, converts the height characteristics of braille points into visual gray characteristics, and solves the problem of separation of braille convex points and a background, thereby better identifying braille, improving the braille identification precision and being simple to operate.

In order to achieve the above purpose, the braille identification device comprises a box body and a camera, and further comprises a light guide plate and a light source which are fixedly installed inside the box body, an empty frame used for placing braille data and matched with each other is arranged on a bottom plate of the box body, the camera is arranged on the box body right above the empty frame, the light guide plate is arranged on a side panel of the box body, the light guide plate is arranged below the inside of the box body, and the light source is arranged below the light guide plate, and a light blocking layer is arranged on the upper surface of the light guide plate.

The arrangement is that the blank frame matched with the Braille data is arranged on the bottom plate of the box body and is used for placing the Braille data; through installing the camera setting directly over the empty frame, and set up the light guide plate on the side board of box, set up the light source in the below of light guide plate simultaneously, when the light source is luminous, a portion of light-emitting is gone out from the clearance of light guide plate and bottom half, a portion of light-emitting enters into the light guide plate, under the effect of blocking light of layer in the light, the light guide plate can be luminous from the side and let the light-emitting of one side to the braille data shine on the braille data, can let more light on the braille data like this, and can let the light that shines on the braille data even, thereby make the camera shoot more clear braille data image, change the high characteristic of braille point into visual gray scale characteristic, the separation problem of braille bump and background has been solved, thereby better discernment braille, improve braille recognition precision, and easy operation.

Further, the hollow frame is arranged at the middle position of the bottom plate of the box body, the hollow frame is square, and an oblique angle is arranged at one side corner of the hollow frame.

The above arrangement can make the braille data placed in the empty frame without dislocation.

Further, an opening and closing door is arranged on one side of the box body and used for opening the box body to place braille data.

Further, the baffle is arranged above the inside of the box body, and the camera is arranged in the middle of the baffle and is positioned right above the empty frame and used for shooting braille data.

Above setting is installed in the positive intermediate position of box inside top baffle through setting up the camera to make the camera can better shoot braille data, acquire comprehensive clear braille data image.

Further, the light guide plate is arranged obliquely downwards relative to the bottom of the box body, and an extension line extending into the box body from the upper side edge of the light guide plate is perpendicular to and intersected with the central line of the upper surface of the braille data.

The arrangement ensures that the light emitted by the light guide plate can radiate on the Braille data, thereby avoiding shadows and the like and ensuring that the light radiated on the Braille data is more uniform.

Further, the distance between one end of the light guide plate fixedly connected with the side panel of the box body and the bottom plate is 5-8 cm, and the width of the light guide plate is set to be 4-5 cm.

Further, the light source is arranged on the side panel of the box body and is positioned below the light guide plate.

Above setting, through setting up the light source on the side board of box, and be located the below of light guide plate, can form the side direction light source, be convenient for change the high characteristic of braille bump into the vision gray scale characteristic.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic overall structure of another view of the present utility model.

FIG. 3 is a schematic view of the light path of the light source of the present utility model.

Detailed Description

Examples of the present utility model will be described in further detail below with reference to the drawings and detailed description.

As shown in fig. 1-2, the embodiment of the utility model provides a braille identification device, which comprises a box 1, and further comprises a light guide plate 2, a light source 3 and a camera 4 which are fixedly installed in the box, wherein one side of the box is provided with an opening and closing door 5, so that the box 1 is conveniently opened, braille data is placed in the box 1 for identification, the middle position of a box bottom plate 11 is provided with an empty frame 50, the empty frame 50 is square, one side angle of the empty frame 50 is provided with an oblique angle 51, namely one corner of the empty frame 50 is not equal to 90 degrees, and the remaining three corners are 90 degrees, so that the braille data can be accurately placed in the empty frame 5, and dislocation of the braille data is avoided. In this embodiment, the light source 3 is a fluorescent strip, and is disposed on the side panel 12 of the box and located below the light guide plate 2, so that the lateral light source 3 can be formed.

In this embodiment, the partition 13 is disposed above the inside of the case 1, and the camera 4 is disposed in the middle of the partition 13 and right above the empty frame 50, so that the camera 4 can better capture braille data and obtain a comprehensive and clear braille data image; the upper surface of light guide plate 2 is provided with shelves optical layer 21, prevents that light source 3 from upwards giving off through light guide plate 2, and on the more braille data of guided hollow frame 50 of the light source 3's of being convenient for a part light-emitting, the distance of light guide plate 2 and box side board 12 fixed connection's one end from bottom plate 11 is 5~8cm, is formed with the contained angle simultaneously between light guide plate 2 and box side board 12, as shown in fig. 3, and the requirement of contained angle is: the light guide plate 2 is inclined downwards relative to the bottom of the box body, an extension line 210 extending towards the inside of the box body from the upper side edge of the light guide plate 2 is perpendicular to and intersects with the central line of the upper surface of the Braille data, in this example, light of the light guide plate in three directions exists on the Braille data, wherein the width of the light guide plate 2 is set to be 4-5 cm, thus, the light emitted by the light guide plate can radiate onto the Braille data, shadows and the like are avoided, and the light irradiated onto the Braille data is more uniform.

In the embodiment, the blank frame matched with the Braille data is arranged on the bottom plate of the box body and used for placing the Braille data; through installing the camera setting directly over the empty frame, and set up the light guide plate on the side board of box, set up the light source in the below of light guide plate simultaneously, when the light source is luminous, a portion of light-emitting is gone out from the clearance of light guide plate and bottom half, a portion of light-emitting enters into the light guide plate, under the effect of blocking light of layer in the light, the light guide plate can side face give out light and let the light that goes out of one side to the braille data shine on the braille data, can let more light on the braille data like this, and can let the light that shines on the braille data even, thereby make the camera shoot more clear braille data image, change the high characteristic of braille point into visual gray scale characteristic, the separation problem of braille bump and background has been solved, thereby better discernment braille, improve braille recognition precision, and easy operation.

Claims

1. The utility model provides a braille identification device, includes box and camera, its characterized in that: still including fixed mounting be in inside light guide plate and the light source of box, be provided with on the bottom plate of box and be used for placing braille data assorted empty frame, the camera sets up on the box that is located empty frame directly over, the light guide plate sets up on the side board of box, just the light guide plate is located the below of box inside, the light source sets up the below of light guide plate is equipped with the layer that is in the light of light guide plate.

2. A braille identification device according to claim 1, characterized in that: the empty frame is arranged at the middle position of the bottom plate of the box body, the empty frame is square, and an oblique angle is arranged at one side corner of the empty frame.

3. A braille identification device according to claim 1, characterized in that: one side of the box body is provided with an opening and closing door for opening the box body to place braille data.

4. A braille identification device according to claim 1, characterized in that: the camera is arranged in the middle of the partition plate and is located right above the empty frame and used for shooting braille data.

5. A braille identification device according to claim 1, characterized in that: the light guide plate is obliquely downwards arranged relative to the bottom of the box body, and an extension line extending into the box body from the upper side edge of the light guide plate is perpendicular to and intersected with the central line of the upper surface of the braille data.

6. A braille identification device according to claim 5, characterized in that: the distance between one end of the light guide plate fixedly connected with the side panel of the box body and the bottom plate is 5-8 cm, and the width of the light guide plate is set to be 4-5 cm.

7. A braille identification device according to claim 1, characterized in that: the light source is arranged on the side panel of the box body and is positioned below the light guide plate.