# Interaktion mit 3D-Objekten in Augmented Reality Anwendungen auf mobilen Android Ger\"aten

## TL;DR

This bachelor’s thesis presents the design and implementation of an Android-based augmented reality app that allows users to interact with 3D models through translation, rotation, scaling, and information display, demonstrating AR interaction possibilities on mobile devices.

## Contribution

It introduces a marker-based AR interaction system on Android with modular data encapsulation for easy customization and extension.

## Key findings

- Users can translate, rotate, and scale 3D models on mobile devices.
- Predefined model parts can be selected and highlighted to show information.
- The application architecture supports easy modifications without extensive reprogramming.

## Abstract

This bachelor's thesis describes the conception and implementation of an augmented reality application for the Android platform. The intention is to demonstrate some possibilities of interaction within an augmented reality environment on mobile devices. For that purpose, a 3D-model is displayed on the devices' touchscreen using marker-based tracking. This enables the user to translate, rotate or scale the model as he wishes. He can additionally select and highlight preassigned parts of the model to display specific information for that element. To assist developers in modifying the application for changing requirements without re-writing large portions of the source code, the information for each part have been encapsulated into its own data type. After an introduction to augmented reality, its underlying technology and the Android platform, some possible usage scenarios and the resulting functionalities are outlined. Finally, the design as well as the developed implementation are described.

---
Source: https://tomesphere.com/paper/1701.01644