I need to submit a dissertation topic that I'm going to be researching, I am a bit stuck and would appreciate suggestions. Im interested in HCI and in particular AR/VR in sports broadcasting
AR and VR are actually not competing but complimentary technologies. It all depends on your research field. While AR helps one get a better understanding of a technology or real world by adding some digital information to them, VR goes beyond that. VR connects you to them! I find VR quit intriguing because it is a whole bunch of challenges to make you believe that new Technology or real World, that VR took you to is Real.
My research topic " Development and Evaluation of VR Driving Simulation" expanded to other areas e.g. Simulation sickness, 3D modeling, tools benchmarking, automated driving and many more. You are never bored working on this topic. You will face more challenges going VR, but you will keep working and never lack a sub-topic afterwards.
Obviously AR and VR can be compared with each other as families of technologies or as implemented environments. However, their relevance to and appropriateness for an application cannot be evaluated unless the specific needs, context(s), objectives, resources, realizaton, and constraints are all together considered. In your particular case it raises the question: What do you want to do in the context of 'sports broadcasting' and what the other factors mentioned (or not) above mean in this context?
Augmented reality and virtuality are two different things.
In augmented reality, technology superimposes a computer-generated image on a user's view of the real world, thus providing a composite view.
In virtual reality, the real world is completely replaced via technology with a simulated world.
In sports broaodcasts of actual realtime events, you would use AV to add information and context to the real game being viewed, not VR.
Sports events in VR would be animated characters. For gaming, this would be fine, but for real-world events, I do not think that replacing real athletes by animated characters would be desirable.
But the AR superimposing of statistics, etc, could be highly desirable.