A portable character recognition device and method
A character recognition and character technology, applied in the field of character recognition, can solve the problem of easy input of wrong characters and trouble, and achieve the effect of good recognition rate, fast and convenient positioning and matching
Active Publication Date: 2022-07-19
DONGHUA UNIV
View PDF4 Cites 0 Cited by
- 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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0032] like figure 1 As shown, the structural block diagram of the portable character symbol recognition device provided by this embodiment, the core part includes:
[0033] The CMOS black and white camera is used to collect the character data area to be recognized, and the upper left corner of the acquired 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 is connected to the BRAM memory through the IIC bus;
[0034] LCD display, used to locate and display the character area to be recognized;
[0035] Character recognition IP core, which is used to realize the core template of character recognition processing, stores character data in BRAM memory, and connects with microprocessor through 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 ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a portable character recognition device and method. The device includes a CMOS black and white camera, an LCD display screen, a character recognition IP core, a microprocessor, a BRAM memory and a voice speaker. The recognition method is: collecting the character data area to be recognized, so that the upper left corner of the area to be recognized coincides with the upper left corner of the display screen; dividing the image of the character area to be recognized into multiple blocks, calculating the grayscale histogram of each image in parallel and determining the threshold , complete the image binarization processing; according to the image height of the character area to be recognized, common character edge spacing and aspect ratio, perform median filtering on the possible character interval area to obtain the number of single characters; perform feature extraction on a single character , complete character recognition through character classification and matching; transmit the recognition string to the client through Bluetooth. The invention completes character recognition by designing a hardware IP core, improves recognition efficiency and precision, and is convenient and quick.
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 searching for URL links in books, magazines, newspapers, and posters, or tracking mail logistics information based on postal tracking numbers, you need to manually enter long strings of character information. Manual typing is not only cumbersome, but also prone to mistyping 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 character image data area of interest; secondly, the character area image of interest is divided into characters according to the common character aspect ratio and edge spacing, and the number of single characters is obtained; then, the feature extraction is performed on the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06V10/147G06V20/62G06V10/70G06V30/10
CPCG06V10/147G06V20/63G06V10/768G06V30/10
Inventor 范红肖敏顾奕文温佳静张丽平夏天
Owner DONGHUA UNIV