ETH Zurich : Computer Science : Pervasive Computing : Distributed Systems : Education : Student Projects : Abstract

Recognition of 2-Dimensional Visual Codes with the Nokia 7650 (P)

Status: Abgeschlossen

The idea of the project is to use the built-in camera of the Nokia 7650 mobile phone as a sensor for physical objects that are equipped with visual codes.

The Nokia 7650 mobile phone contains a built-in camera, is programmable in Java and C++ and runs the Symbian operating system. The goal of the project is to use the integrated camera for the recognition of 2-dimensional visual codes. Such visual codes can be attached to physical objects and facilitate their automatic recognition. The encoded IDs identify physical objects and can be used as a key to access object-related information and functionality.

The project covers the following aspects:

• evaluation of camera capabilities
• design of a 2-dimensional code that is
  • easy to recognize
  • robust / fault-tolerant
  • stores a maximum number of bits
• design of an algorithm for code recognition
• Java implementation of the algorithm on a PC (for easy evaluation)
• C++ implementation on the device itself
• sample application that uses code recognition ability