Mobile App Architecture Case Study

DigiScanner App

A powerful document scanning application. Capture, crop, and enhance documents seamlessly to digital format.

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DigiScanner App detailed system screenshot

450ms / page

Processing Speed

70% smaller

PDF Compression

Project Overview

Android document scanning application enabling users to scan, perspective-correct, contrast-enhance, and compile documents into multi-page PDF files.

System Architecture & Design

React Native application utilizing Android native C++ OpenCV image processing bindings.

Key Engineering Features

  • Edge Detection & Perspective Crop Correction
  • Black & White Magic Color Filters
  • Multi-Page PDF Generation & Direct Share

Engineering Challenge

Real-time document edge detection under poor lighting conditions.

Technical Solution

Implemented adaptive Canny edge detection thresholds with automatic fallback heuristics.

API Design

Local processing engine without external cloud network dependencies.

Cloud & Deployment

Android APK build release.