The field of immersive technologies and human-machine collaboration is rapidly advancing, with a focus on creating seamless and intuitive interactions between humans and machines. Researchers are exploring new methods for predicting user head movements and optimizing bandwidth allocation to ensure a high-quality user experience. The use of wall-sized displays and mixed-presence collaboration is also being investigated, with a focus on evaluating joint attention and designing effective user interfaces. Furthermore, the importance of scale consistency between real and virtual spaces is being highlighted, with studies showing that optimal immersion is achieved when virtual environments are slightly larger than real space and virtual avatars are slightly smaller than users. Noteworthy papers in this area include:

• A study proposing a novel H2M collaboration scheme that predicts user head movements to orient the machine's camera in advance, achieving lower bandwidth consumption and better network resource utilization.
• Research developing an immersive interaction system that investigates the impact of virtual space and virtual avatar scale on immersion, providing actionable insights for designing hybrid spaces that enhance immersion and coherence.