Recent advances in technology have meant that virtual, mixed and augmented reality applications (VR, MR and AR) are more affordable and available.Apart from games and entertainment, these are used in many other sectors such as healthcare, education, industry and tourism, to name just a few.The capacity of these technologies to reproduce environments and real procedures in a safe way means they are providing the base for modern training environments.In addition, when gamification and serious games are integrated, training scenarios can become more attractive and motivating.We refer to these environments as systems VRT (Virtual Reality Training).

In spite of the benefits, value and potential of VRT, there are still many barriers that hamper its development, use and acceptance.The fact is that VRT design and development is complex and slow, with a low potential for reuse because of the specific nature of the end products.Its design and development also involves experts in several areas and requires long lifecycles and more intensive testing stages.The lack of understanding between experts and developers, the complexity of harnessing knowledge, the difficulty of preparing content for learning and determining how to integrate gamification have been identified as some of the main limitations.To overcome these, research is needed to propose more efficient and effective strategies for the design and development of VRT applications capable of meeting the expectations of all interested parties (sectoral experts, programmers, developers, end users...).

To contribute to the development of new approaches, VIREON will focus first on the use of ontologies to give support and to facilitate the design, development and implementation of VRT.Secondly, the focus will be on the automatic and adaptive creation of content for VRT.Moreover, the VRT for post-stroke recovery will be considered as a practical case for validating our proposals in these areas.

As a result of VIREON research, our goal is to obtain:

1) A new general ontology that covers all the stages of the design, development and implementation of VRT.Its application is expected to reduce the time and effort required to achieve VRT systems and also to facilitate the reuse of development.

2) New tools for authorship, interaction strategies and correction techniques that make it easier to adapt VRT content.

3) A demonstrator for the recovery of post-stroke patients that integrates the techniques designed.