Currency Detection

An Android application for real-time currency detection and recognition using on-device machine learning.

Overview

This application performs currency detection directly on mobile devices. The training process is executed on-device, with extracted keypoints stored in a local SQLite database for fast recognition.

Features

• On-Device Training: Train the model directly on your Android device
• Local Database Storage: Keypoints are saved to SQLite for quick access
• Real-Time Detection: Recognize currency in real-time using your device camera
• Offline Operation: No internet connection required after training

Setup Instructions

For Training Mode

To enable training mode, you need to modify the AndroidManifest.xml file to launch the training activity directly.

Change the following:

<activity
    android:name=".SplashActivity"
    android:theme="@style/AppTheme.NoActionBar">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>
<activity 
    android:name=".ReaderMainActivity"
    android:theme="@style/AppTheme.NoActionBar"/>
<activity android:name=".KeypointsActivity">
</activity>

To this:

<activity
    android:name=".SplashActivity"
    android:theme="@style/AppTheme.NoActionBar">
</activity>
<activity 
    android:name=".ReaderMainActivity"
    android:theme="@style/AppTheme.NoActionBar"/>
<activity android:name=".KeypointsActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

After Training is Complete

Once you've finished training the model, switch back to normal operation mode by reverting the AndroidManifest.xml changes:

Change back to:

<activity
    android:name=".SplashActivity"
    android:theme="@style/AppTheme.NoActionBar">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>
<activity 
    android:name=".ReaderMainActivity"
    android:theme="@style/AppTheme.NoActionBar"/>
<activity android:name=".KeypointsActivity">
</activity>

How It Works

1. Training Phase: Launch the app in training mode to capture and process currency images, extracting keypoints that are saved to the local database
2. Detection Phase: Switch to normal mode to use the trained model for real-time currency recognition

Requirements

• Android device with camera
• Minimum Android SDK version: [specify your minimum SDK]
• Storage permission for database operations

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.