Android-based Vehicle License Plate Recognition Software
Keywords Android Car license Identification Shooting
摘要随着智能手机的普及和移动通信技术的成熟，人们通过智能手机就能随时随地享受移动互联网所带来的服务，智能手机也越来越受到人们的关注，目前，Android平台占据了智能手机市场的半壁江山。本项目将基于Android平台开发一款识别汽车牌照的组件，满足移动应用系统嵌入式调用，以此来方便交通管理人员的使用，实现自动打开摄像头、自动采集汽车牌照视频的同时在移动终端设备屏幕上显示视频；自动检测当前环境状况，提供合适的视频采集分辨率；可开启摄像头LED灯，进行夜晚拍摄。
关键词 Android 汽车牌照 识别 拍摄
毕业设计说明书（毕业论文）外文摘要
Table of Contents
1 Introduction 1
1.1 Purpose and significance 1
1.2 Current status of license plate recognition technology at home and abroad 3
1.3 Particularity of China's license plates 4
1.4 Plate recognition research 6
2 Relevant Theories 7
2.1 Character recognition of vehicle license plates 7
2.2 Character recognition method based on template matching 8
2.3 Features of Android 8
2.4 Potential Difficulties 9
3 Project requirements analysis 10
3.1 Users-demand analysis 10
3.2 System design 10
3.3 Brief Summary 11
4 System implementation 11
4.1 Core module 11
4.1.1 Image compression 11
4.1.2 Location 11
4.1.3 Segmentation 13
4.1.4 OCR recognition 13
4.2 Operation effect demonstration 14
5 System performance testing 16
5.1 Speed of recognition 16
5.2 Recognition accuracy 16
5.3 Requirements of taking pictures 16
5.4 Follow-up work 16
Conclusion 17
Acknowledgements 18
References 18
1 Introduction
1.1 Purpose and significance
Vehicle license plate is equivalent to a vehicle's identity card, as well as the only certificate of a vehicle's identity in public places. For this, China's traffic management department has paid much attention to the management of vehicle license plates and has developed a set of strict management regulations. Among them, the production, installation and maintenance of vehicle license plates are subject to the unified management of the policy-making departments.
Vehicle license plate recognition is an important research topic in the intelligent traffic fields in which computer vision and pattern recognition technology is applied. This technology possesses wide ranges of applications, including: (1) traffic flow detection; (2) traffic control and guidance; (3) vehicle management at the entrances and exits of airports, ports and other places; (4) vehicle management in communities; (5) illegal vehicles monitoring like running red light; (6) Non-stop automatic toll; (7) vehicle monitoring at crossing checkpoints; (8) anti-theft security management of public parking lots; (9) calculation of travel time; (10) vehicles' anti-theft security and examination and interception of specified vehicles. It has great potential application value in the marketplace and is able to generate huge social and economic benefits.