Playground Detection App

An Android app built with MVVM architecture, utilizing CameraX and Google ML Kit for real-time image analysis.

The app features multiple detectors: a custom object detector using an EfficientNet custom model, a general object detector using a pre-built MLKit model and a face detector. It displays a live camera feed with overlay effects showing detection details (e.g., bounding boxes and probability of smiling for face detection).

The app is modularized, allowing the CameraX module to be imported into other existing apps. It leverages Hilt for dependency injection, Jetpack Compose for UI, Kotlin as the programming language, and Google Accompanist for runtime permissions support.

🚀 Features

• Live Camera Feed: Real-time preview powered by CameraX framework.
• Multiple Image Detectors:
  • Custom Object Detector: Uses a custom EfficientNet model.
  • General Object Detector: Uses ML Kit's pre-built model.
  • Face Detector: Detects faces with facial landmarks and expressions (e.g., smile detection).
• Dynamic Detector Selection: Users can switch between detectors.
• Overlay Effects for Detection Results: Draw bounding boxes and detection details (e.g., confidence scores) on the live feed.
• Camera Lens Switching: Toggle between front and back cameras.
• Generic Programming: New ML Kit detectors (e.g., Barcode, Pose Detector) can be easily integrated.
• Modular Design: CameraX module can be easily imported into other apps for camera-based image analysis.

📸 Screenshots

📦 Tech Stack

• Architecture: MVVM
• Language: Kotlin
• UI: Jetpack Compose
• Dependency Injection: Hilt
• Camera Framework: CameraX
• Machine Learning: Google ML Kit
• Permissions Handling: Google Accompanist

🔧 Custom Models

The custom object detector uses an EfficientNet model stored at:
feature/camerax/assets/custom_models/

Additional models can be downloaded from TensorFlow Hub:
Image Classification Collection

Project Structure

app/
└── feature/
     ├── camerax/                  # CameraX module implementation
     │   └── assets/
     │       └── custom_models/    # Location of the **EfficientNet** custom model
     │
     └── home/                     # Home module - contains runtime permissions handling