3. 3I2" methodology for designing an industrial VR application

3.1 Introduction

For all applications exploiting virtual reality techniques, not just for industry, we need to study their implementation in detail, properly analyzing the sensory-motor, cognitive and functional requirements for the user immersed and (inter)acting in the virtual environment. Too many applications are still developed without careful thought, very often using the latest low-cost headsets, without considering whether a headset is the best visual interface for the application in question. For over twenty years, we at the Ecole des Mines de ParisTech have been implementing a methodology that has been validated and tested on some fifty professional projects: the "3I ² " methodology (or "4 I ² ...