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Android License Plate Discern

License

License
GroupId

GroupId

com.github.iwgang
ArtifactId

ArtifactId

licenseplatediscern
Last Version

Last Version

1.1
Release Date

Release Date
Type

Type

aar
Description

Description

library
Android License Plate Discern
Project URL

Project URL

https://github.com/iwgang/LicensePlateDiscern
Source Code Management

Source Code Management

https://github.com/iwgang/LicensePlateDiscern

Download licenseplatediscern

Filename Size
licenseplatediscern-1.1.pom
licenseplatediscern-1.1.aar 74 MB
licenseplatediscern-1.1-sources.jar 12 KB
Browse

How to add to project

<!-- https://jarcasting.com/artifacts/com.github.iwgang/licenseplatediscern/ -->
<dependency>
    <groupId>com.github.iwgang</groupId>
    <artifactId>licenseplatediscern</artifactId>
    <version>1.1</version>
    <type>aar</type>
</dependency>
// https://jarcasting.com/artifacts/com.github.iwgang/licenseplatediscern/
implementation 'com.github.iwgang:licenseplatediscern:1.1'
// https://jarcasting.com/artifacts/com.github.iwgang/licenseplatediscern/
implementation ("com.github.iwgang:licenseplatediscern:1.1")
'com.github.iwgang:licenseplatediscern:aar:1.1'
<dependency org="com.github.iwgang" name="licenseplatediscern" rev="1.1">
  <artifact name="licenseplatediscern" type="aar" />
</dependency>
@Grapes(
@Grab(group='com.github.iwgang', module='licenseplatediscern', version='1.1')
)
libraryDependencies += "com.github.iwgang" % "licenseplatediscern" % "1.1"
[com.github.iwgang/licenseplatediscern "1.1"]

Dependencies

compile (2)

Group / Artifact Type Version
org.jetbrains.kotlin : kotlin-android-extensions-runtime jar 1.3.50
com.github.iwgang : opencvlibrary346 jar 1.0

Project Modules

There are no modules declared in this project.

@iwgang

LicensePlateDiscern

车牌识别，支持扫描识别和选图识别

下载体验DEMO

效果图

gradle

implementation 'com.github.iwgang:licenseplatediscern:1.1'

build.gradle
ndk {
    abiFilters 'armeabi-v7a' // 其它看自己需求添加
}

代码

// 初始化（建议在 Application 中）
LicensePlateDiscernCore.init(this)


// 场景1：使用 LicensePlateDiscernView（需要相机权限）

// 识别结果回调
cv_licensePlateDiscernView.setOnDiscernListener { lpInfo ->
    tv_resultInfo.text = "识别结果：${lpInfo.licensePlate}（${lpInfo.confidence}）"
    // 调用 reDiscern() 方法后才会重新再识别，否则 setOnDiscernListener 不会再回调
    cv_licensePlateDiscernView.reDiscern()
}

// 闪光灯 api
cv_licensePlateDiscernView.openFlash()
cv_licensePlateDiscernView.closeFlash()


// 场景2：用作选图识别等

// 图片路径识别（需要读取SD卡权限）
val lps = LicensePlateDiscernCore.discern(context, picPath, confidence)
// 图片 bitmap 识别
val lps = LicensePlateDiscernCore.discern(bitmap, confidence)

LicensePlateDiscernView 布局

<cn.iwgang.licenseplatediscern.view.LicensePlateDiscernView
    android:id="@+id/cv_licensePlateDiscernView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:lpd_borderColor="#80FFFFFF"
    app:lpd_borderSize="0.5dp"
    app:lpd_maskColor="#8004040f" />

LicensePlateDiscernView 的自定义配置

参数 类型 默认值 说明
lpd_discernRectTopMargin dimension 260dp 识别框上边距
lpd_discernRectLRMargin dimension 30dp 识别框左右边距
设置过 lpd_discernRectWidth 时此字段失效
lpd_discernRectWidth dimension 无 识别框宽度
lpd_discernRectHeight dimension 120dp 识别框高度
lpd_maskColor color #50000000 识别框外的遮罩部分颜色
不想要遮罩可以设置成 @android:color/transparent
lpd_angleLength dimension 22dp 边角线长度
lpd_angleStrokeWidth dimension 3dp 边角线宽度
lpd_angleOffset dimension 无 边角线宽度偏移值
lpd_angleColor color Color.GREEN 边角线颜色
lpd_borderSize dimension 无 识别框边框 size
lpd_borderColor color Color.WHITE 识别框边框颜色
lpd_isShowScanLine boolean true 是否显示扫描线
lpd_scanLineSize dimension 1dp 扫描线 size
lpd_scanLineColor color Color.GREEN 扫描线颜色
lpd_scanLineDelayed integer 16 扫描线延迟间距延迟时间，用于调整扫描线动画速度
lpd_discernConfidence float 0.9 识别可信度 0 - 1
lpd_doubleTapZoom boolean true 双击变焦放大/缩小

想自己拉代码编译修改？

  • 下载 OpenCV Android 3.4.6
  • 下载 NDK r14b
  • 配置 CMakeLists.txt 中的 OpenCV_DIR 成自己的

感谢

已知问题

  • 选图识别的识别率很低

Versions

Version
1.1
1.0