gitee open source address "https://gitee.com/admin_yu/yx-image-recognition"
introduce
License plate recognition and training system implemented by spring boot + maven
There are relatively few deep learning projects based on the java language in the entire open source community; and the EasyPR-Java project for license plate recognition based on the java language was last updated five years ago.
I refer to the original C++ project of EasyPR and the EasyPR-Java project of fan-wenjie; at the same time, I consulted some of the official C++ source code of opencv version 4.0.1, combined with my understanding of the java language, and sorted out the current project
This is an entry-level tutorial project, and I am currently learning image recognition related technologies; Daniel please detour
Based on the original EasyPR project, the current project has added the green card recognition function, but the current training library file contains too few samples of green cards, and the training of green card samples needs to be added again, and will be gradually uploaded later
Currently, the license plate detection training based on the svm algorithm and the license plate number recognition training function based on the ann algorithm have been added
Document recognition, face recognition and other functions will be gradually added in the future
Contains functions
Yellow blue green yellow blue green license plate detection and license plate number recognition
Single picture, multiple pictures concurrently, single picture multiple license plate detection and recognition
Image license plate detection training
Image text recognition training
Contains two implementations of dependent packages: implementation based on org.bytedeco.javacpp package; implementation based on org.opencv official package
The org.opencv official package provides java language api; java projects can be referenced through build path or environment variables;
The org.bytedeco.javacpp package, JavaCPP is an open source library that provides efficient access to local C++ methods in Java; just introduce coordinate dependencies in the pom. Welcome to pay attention to Java projects and share a place to share high-quality projects
Software version
jdk 1.8.61+
maven 3.0+
opencv 4.0.1 ；javacpp1.4.4；opencv-platform 4.0.1-1.4.4
spring boot 2.1.5.RELEASE
yx-image-recognition version 1.0.0
Software Architecture
B/S architecture, front-end html + requireJS, back-end java
The database uses sqlite3.0
The interface document uses swagger 2.0
Operation interface
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The picture of the license plate comes from the Internet and is only used for communication and learning, not for commercial purposes; if there is any infringement, please contact me to delete
License plate detection process
Gaussian Blur:
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Image grayscale:
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Sobel operator:
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Binary image:
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Image closing operation:
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Binary image denoising:
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Extract outer contours:
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Outer contour filtering:
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crop:
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Reset cutout size:
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License plate detection results:
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Image license plate text recognition process
debug_char_threshold：
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debug_char_clearLiuDing：
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debug_specMat：
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debug_chineseMat：
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debug_char_auxRoi：
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Installation tutorial development environment construction: ./doc/01_Development environment construction.md Pull the project to the local, copy the PlateDetect folder to the d drive, and the default license plate recognition operations are processed in the d:/PlateDetect/ directory and need to be modified Path, just modify the constant parameters of the com/yuxue/constant/Constant.java file, you can use the absolute drive letter path, or use the project relative path spring boot to run the project, enter http://localhost:16666/index on the browser You can open the operation interface. Enter http://localhost:16666/swagger-ui.html on the browser to open the interface document page Reference document liuruoze/EasyPR: https://gitee.com/easypr/EasyPR fan-wenjie/EasyPR -Java: https://github.com/fan-wenjie/EasyPR-Java opencv official: https://opencv.org/
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