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Portable character recognition device and method

A character recognition, portable technology, applied in the field of character recognition, can solve problems such as troublesome and easy-to-enter wrong characters, and achieve the effect of fast and convenient positioning and matching, and good recognition rate

Active Publication Date: 2018-09-21
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual input is not only cumbersome, but also easy to enter wrong characters

Method used

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  • Portable character recognition device and method
  • Portable character recognition device and method
  • Portable character recognition device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Such as figure 1 As shown, the structural block diagram of the portable character symbol recognition device provided by this embodiment, the core part includes:

[0033] CMOS black-and-white camera, used to collect the character data area to be recognized, the upper left corner of the obtained area to be recognized coincides with the upper left corner of the display screen, so as to realize the positioning of the character area to be recognized, and connect to the BRAM memory through the IIC bus;

[0034] LCD display, used to locate and display the character area to be recognized;

[0035] The character recognition IP core is used to realize the core template of character recognition processing, and store the character data in the BRAM memory, and connect to the microprocessor through the AXI interface;

[0036] The microprocessor is used to start or control the character recognition IP core, and load the bluetooth driver on the LINUX operating system, and transmit the...

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Abstract

The invention discloses a portable character recognition device and method. The device comprises a CMOS (Complementary Metal Oxide Semiconductor) black and white camera, an LCD display screen, a character recognition IP core, a microprocessor, a BRAM (Broadcast Recognition Access Method) memory and a voice speaker. The recognition method is as follows: acquiring a to-be-recognized character data area, enabling the top left corner of the to-be-recognized area to coincide with the top left corner of the display screen; dividing a to-be-recognized character area image into a plurality of blocks,calculating the grey level histogram of each block of the image, determining the threshold value, finishing binarization processing of the image; filtering a median value of a possible character interval area according to the height of the to-be-recognized character area image, the common character edge distance and the aspect ratio to obtain the number of single characters; extracting the characteristic of the single character, finishing recognizing the character by classifying and matching the character; and transmitting a recognized character string to a user side through Bluetooth. The character is recognized by designing the IP core of hardware, the recognition efficiency and accuracy is improved, and the device and the method are convenient and efficient.

Description

technical field [0001] The invention relates to a portable character recognition device and method, belonging to the technical field of character recognition. Background technique [0002] When querying website links in books, magazines, newspapers, and posters, or tracking mail logistics information based on postal tracking numbers, it is necessary to manually enter long strings of character information. Manual input is not only cumbersome, but also easy to enter wrong characters. Therefore, how to recognize characters quickly, accurately and efficiently remains to be solved. Regarding character recognition, a portable character recognition method and device are provided. The steps are: first collect the image data area of ​​the character of interest; secondly, segment the image of the character area of ​​interest according to the common character aspect ratio and edge spacing to obtain the number of individual characters; then, perform feature extraction on a single char...

Claims

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Application Information

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IPC IPC(8): G06K9/20G06K9/32G06K9/72
CPCG06V10/147G06V20/63G06V10/768G06V30/10
Inventor 范红肖敏顾奕文温佳静张丽平夏天
Owner DONGHUA UNIV
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