1 Star 0 Fork 1.6K

hcxiong / EasyPR

forked from liuruoze / EasyPR 
加入 Gitee
与超过 1200万 开发者一起发现、参与优秀开源项目,私有仓库也完全免费 :)
免费加入
克隆/下载
贡献代码
同步代码
取消
提示: 由于 Git 不支持空文件夾,创建文件夹后会生成空的 .keep 文件
Loading...
README
Apache-2.0

EasyPR

EasyPR是一个中文的开源车牌识别系统,其目标是成为一个简单、高效、准确的车牌识别引擎。

相比于其他的车牌识别系统,EasyPR有如下特点:

  • 它基于openCV这个开源库。这意味着你可以获取全部源代码,并且移植到opencv支持的所有平台。
  • 它能够识别中文。例如车牌为苏EUK722的图片,它可以准确地输出std:string类型的"苏EUK722"的结果。
  • 它的识别率较高。图片清晰情况下,车牌检测与字符识别可以达到80%以上的精度。

更新

本次更新是1.3beta版,主要改进在于提升了字符识别模块的准确性:

平均字符差距从0.7降低到0.4,完整匹配度从68%左右上升到目前的81%,平均执行时间从2秒降低到1.5秒。见下图:

1.3版综合效果

主要改动如下:

  • 改进了字符识别算法,重新训练了ANN模型,从而使得字符识别准确率大幅度提升。

  • 使用了更鲁棒性的办法提升了车牌定位模块的准确率。

目前版本的问题是处理时间还是偏高,1.3正式版本中会对这个问题进行fix。

平台

目前除了windows平台以外,还有以下其他平台的EasyPR版本。一些平台的版本可能会暂时落后于主平台。

版本 开发者 版本 地址
android goldriver 1.1 linuxxx/EasyPR_Android
linux Micooz 1.3 已跟EasyPR整合
ios zhoushiwei 1.3 zhoushiwei/EasyPR-iOS
mac zhoushiwei,Micooz 1.3 已跟EasyPR整合
java fan-wenjie 1.2 fan-wenjie/EasyPR-Java

兼容性

EasyPR是基于opencv2.4.8版本开发的,2.4.8以上的版本应该可以兼容,以前的版本可能会存在不兼容的现象。opencv3.0的版本还没有经过测试。

例子

假设我们有如下的原始图片,需要识别出中间的车牌字符与颜色:

EasyPR 原始图片

经过EasyPR的第一步处理车牌检测(PlateDetect)以后,我们获得了原始图片中仅包含车牌的图块:

EasyPR 车牌

接着,我们对图块进行OCR过程,在EasyPR中,叫做字符识别(CharsRecognize)。我们得到了一个包含车牌颜色与字符的字符串:

“蓝牌:苏EUK722”

版权

EasyPR的源代码与训练数据遵循Apache v2.0协议开源。

EasyPR的image/general_test文件夹下的图片数据遵循GDSL协议(通用数据共享协议)进行开放。

请确保在使用前了解以上协议的内容。

安装

EasyPR不需要安装,开发者直接在其上做改动。如果想使用DLL形式引用或者使用其他语言调用,则可以在EasyPR_DLL_src中找到。

详细的开发与教程请见介绍与开发教程

使用

使用Git克隆一份拷贝到你本机或者直接下载zip压缩吧。

使用vs2010或以上版本的IDE选择“从现有代码创建项目”,引用EasyPR的目录,项目类型切记选择"控制台类型"。

以下表格是本工程中所有目录的解释:

目录 解释
src 所有源文件
model 机器学习的模型
train 训练数据与说明
image 测试用的图片
doc 相关文档

以下表格是image目录中子目录的解释:

目录 解释
general_test GDTS(通用数据测试集)
natvie_test NDTS(本地数据测试集)
tmp Debug模式下EasyPR输出中间图片的目录

以下表格是src目录中子目录的解释:

目录 解释
core 核心功能
include 相关头文件
test 测试目录,包括单图测试与批量测试
train 训练目录,存放模型训练的代码
util 辅助功能

以下表格是src目录下一些核心文件的解释与关系:

文件 解释
plate_locate 车牌定位
plate_judge 车牌判断
plate_detect 车牌检测,是车牌定位与车牌判断功能的组合
chars_segment 字符分割
chars_identify 字符鉴别
chars_recognise 字符识别,是字符分割与字符鉴别功能的组合
plate_recognize 车牌识别,是车牌检测与字符识别的共有子类
feature 特征提取回调函数
plate 车牌抽象
core_func.h 共有的一些函数

以下表格是src目录下一些辅助文件的解释与关系:

文件 解释
util.h 辅助功能头文件
main.cpp 主命令行窗口
test.cpp 单例测试
accuracy_test.cpp 批量测试
svm_train.cpp svm训练函数
generate_gdts.cpp GDTS生成函数

Contributer

  • liuruoze:1.0-1.2版核心代码作者,1.3版整合工作

  • 海豚嘎嘎:1.3alpha-beta版作者,提升了车牌定位与字符识别的准确率

  • Micooz:linux与mac的跨平台编译,性能优化,util类

  • jsxyhelu:deface版本一

  • zhoushiwei:deface版本二

  • ahccom:新的plateLocate函数

  • 阿水:1.3版整合,数据标注等工作

鸣谢

taotao1233,邱锦山,唐大侠,jsxyhelu,如果有一天(zhoushiwei),学习奋斗,袁承志,圣城小石匠,goldriver,Micooz,梦里时光,Rain Wang,任薛纪,ahccom,星夜落尘,海豚嘎嘎

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types. "Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof. "Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form. 3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed. 4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License. 5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "{}" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright {yyyy} {name of copyright owner} Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

简介

EasyPR是一个中文的开源车牌识别系统,其目标是成为一个简单、高效、准确的车牌识别引擎。 相比于其他的车牌识别系统,EasyPR有如下特点: * 它基于openCV这个开源库。这意味着你可以获取全部源代码,并且移植到java等平台。 * 它能够识别中文。例如车牌为苏EUK722的图片,它可以准确地输出std:string类型的"苏EUK722"的结果。 * 它的识别率较高。图片清晰情况下,车牌检测与字符识别可以达到90%以上的精度。 展开 收起
Apache-2.0
取消

发行版

暂无发行版

贡献者

全部

近期动态

加载更多
不能加载更多了
1
https://gitee.com/hcxiong/EasyPR.git
git@gitee.com:hcxiong/EasyPR.git
hcxiong
EasyPR
EasyPR
master

搜索帮助

14c37bed 8189591 565d56ea 8189591