2. Features for three-dimensional space perception

Before discussing visual interface technologies, we need to clarify the different functionalities that can be used to perceive a three-dimensional space. These functionalities refer to the characteristics of human vision: the perception of 3D space and depth depends on proprioceptive cues (accommodation and vergence) and binocular or monocular visual cues. . It is the observer who creates the 3D perception of space, not the technology. Various functionalities (figure