CN210955133U - Optical character recognition device - Google Patents
Optical character recognition device Download PDFInfo
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- CN210955133U CN210955133U CN202020224216.7U CN202020224216U CN210955133U CN 210955133 U CN210955133 U CN 210955133U CN 202020224216 U CN202020224216 U CN 202020224216U CN 210955133 U CN210955133 U CN 210955133U
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- character recognition
- optical character
- light
- image acquisition
- glass window
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Abstract
The utility model discloses an optical character recognition device relates to optics intelligent recognition's field, including relative box (6) that sets up, box (6) top is provided with glass window (5) that are used for placing the discernment certificate, and one side of box (6) is provided with light beam emitter (3), and light beam emitter (3) below is provided with image acquisition device (1), be provided with certain inclination's reflector (2) between image acquisition device (1) and glass window (5), light reflection to image acquisition device (1) on reflector (2) with the glass window, the OCR identification equipment structure size who has solved prior art existence is big, the shooting picture light filling is inhomogeneous, receives the big problem of external environment light influence.
Description
Technical Field
The utility model relates to an optics intelligent recognition's field, concretely relates to optical character recognition device.
Background
Optical Character Recognition (OCR) refers to a process in which an electronic device checks characters printed on paper, determines the shape of the characters by detecting dark and light patterns, and then translates the shape into computer characters by a character recognition method, that is, for the characters of a print, characters in a paper document are optically converted into an image file of a black-and-white dot matrix, and the characters in the image are converted into a text format by recognition software for further editing and processing by character processing software.
The quality of the recognized picture is the key to the high and low OCR recognition accuracy. In the prior art, the recognized text is shot mostly by adopting a camera to directly shoot or a secondary reflection light path mode, the light path mode directly shot by the camera is greatly influenced by ambient light, the light supplement of the shot image is uneven and is easy to reflect, and the structure size of the secondary reflection light path mode equipment is large.
Disclosure of Invention
The utility model provides an optical character recognition device, the OCR who has solved prior art existence discerns that equipment structure size is big, the picture light filling is inhomogeneous, receive the big problem of external environment light influence.
In order to solve the technical problem, the utility model provides a following technical scheme:
the optical character recognition device comprises a box body which is arranged oppositely, wherein a glass window used for placing recognition certificates is arranged at the top of the box body.
Preferably, the angle between the image acquisition device and the glass window is 45 degrees.
Preferably, the image acquisition device is a wide-angle camera.
Preferably, the light beam emitting device (3) is provided with three LED light sources of white light, infrared 850nm and ultraviolet 365 nm.
Preferably, the number of the LED light sources is 4-8.
Preferably, a light barrier is arranged right in front of the light beam emitting device.
Preferably, the glass window is a glass sheet with a side length of 90mm and a thickness of 3 mm.
Compared with the prior art, the utility model, have following advantage:
design a 45 speculum of slope between the shooting certificate on wide angle camera and glass window, two distances of level and vertical direction are cut apart into through the speculum with camera and the straight-line distance of shooting between the certificate, cooperate the wide angle camera lens simultaneously, thereby OCR identification equipment's structure size of a dimension has been reduced, increase a barn door in the dead ahead of equipment light filling lamp simultaneously, cover the light directly to above the reflector, prevent that light direct irradiation from causing the reflection of light on certificate or the reflection returns the camera, make the light filling more even.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a diagram of an optical character recognition device according to the present invention;
FIG. 2 is a diagram of the optical character recognition light path structure of the present invention;
the device comprises an image acquisition device 1, an image acquisition device 2, a reflector 3, a light beam emission device 4, a light barrier 5, a glass window 6 and a box body.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1
As shown in fig. 1-2, an optical character recognition device, including box (6) that sets up relatively, box (6) top is provided with glass window (5) that are used for placing the discernment certificate, its characterized in that, one side of box (6) is provided with light beam emitter (3), and light beam emitter (3) below is provided with image acquisition device (1), be provided with certain inclination's reflector (2) between image acquisition device (1) and glass window (5), light reflection to image acquisition device (1) on reflector (2) the glass window, the contained angle of image acquisition device (1) and glass window (5) is 45, and image acquisition device (1) is wide-angle camera.
A reflecting mirror inclined by 45 degrees is designed between the wide-angle camera and the shooting certificate on the glass window, the straight-line distance between the camera and the shooting certificate is divided into two distances in the horizontal direction and the vertical direction through the reflecting mirror, and the wide-angle lens is matched simultaneously, so that the size of the structural dimension of the OCR recognition equipment is reduced.
Furthermore, the light beam emitting device (3) is three LED light sources of white light, infrared 850nm and ultraviolet 365nm, the number of the LED light sources is 4-8, and the glass window (5) is a glass sheet with the side length of 90mm and the thickness of 3 mm.
In a preferred scheme, a light barrier (4) is arranged right in front of the light beam emitting device (3).
The light barrier is additionally arranged in front of the light supplementing lamp of the equipment to shield light directly irradiating the reflective mirror, so that light is prevented from directly irradiating the certificate or reflecting the certificate to the camera to reflect light, and the light supplementing is more uniform.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides an optical character recognition device, is provided with glass window (5) that are used for placing the discernment certificate including box (6) that set up relatively, box (6) top, and its characterized in that, one side of box (6) is provided with beam emitter (3), and beam emitter (3) below is provided with image acquisition device (1), be provided with certain inclination's reflector (2) between image acquisition device (1) and glass window (5), light reflection to image acquisition device (1) on reflector (2) the glass window.
2. An optical character recognition device as claimed in claim 1, characterized in that the image acquisition means (1) are arranged at an angle of 45 ° to the glass window (5).
3. An optical character recognition device as claimed in claim 1, characterized in that the image acquisition means (1) is a wide-angle camera.
4. An optical character recognition device according to claim 1, characterized in that the light beam emitting means (3) is provided with three LED light sources of white light, infrared 850nm and ultraviolet 365 nm.
5. The optical character recognition device of claim 4, wherein the number of said LED light sources is 4-8.
6. An optical character recognition device as claimed in claim 1, characterized in that a light barrier (4) is arranged directly in front of the light beam emission means (3).
7. An optical character recognition device as claimed in claim 1, characterized in that the glass window (5) is a glass plate having a side length of 90mm and a thickness of 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020224216.7U CN210955133U (en) | 2020-02-28 | 2020-02-28 | Optical character recognition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020224216.7U CN210955133U (en) | 2020-02-28 | 2020-02-28 | Optical character recognition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210955133U true CN210955133U (en) | 2020-07-07 |
Family
ID=71377240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020224216.7U Active CN210955133U (en) | 2020-02-28 | 2020-02-28 | Optical character recognition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210955133U (en) |
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2020
- 2020-02-28 CN CN202020224216.7U patent/CN210955133U/en active Active
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