For yaw motion, the subjective visual amplitudes were approximately the same as the real inertial amplitudes, whereas for sway and especially surge, the subjective visual amplitudes were higher than the inertial amplitudes. When the FoV and visual scene were closer to what one expects in the real world, the scaling between the visual and inertial cues was closer to one. Results showed that the subjective visual amplitude was significantly affected by the FoV, visual scene, and degree-of-freedom. This was done for motion profiles in surge, sway, and yaw.
DEPTH PERCEPTION DEFINITION SIMULATOR
Subjects were exposed to simulator visuals with different fields of view and different visual scenes and were asked to vary the visual amplitude until it matched the perceived inertial amplitude. This paper studies how different visual characteristics, like field of view (FoV) and size and depth cues, influence the scaling between visual and inertial motion in a simulation environment. This result is thought to be caused by the "quality" of the motion cues delivered by the simulator motion and visual systems. In the field of motion-based simulation, it was found that a visual amplitude equal to the inertial amplitude does not always provide the best perceived match between visual and inertial motion. Lastly, the role of depth cueing in performing closed-loop control tasks will be discussed. In this paper, visual depth cues and their interactions will be discussed, as well as display technology and content and related artifacts. Additionally, most displays create some degree of cue conflict. In addition to technologies, display content and the source (camera/sensor versus computer rendering) provide varying degrees of cue information.
Display technologies used for head-down and head-up displays, as well as out-the-window displays, have differing capabilities for providing depth cueing information to the observer/operator. These cues provide different levels of information (ordinal, relative, absolute) and saliency depending upon depth, task, and interaction with other cues. Some cues are provided by physiological mechanisms, others from pictorial cues that are interpreted psychologically, and still others by the relative motions of objects or features induced by observer (or vehicle) motions. Humans rely on a variety of visual cues to inform them of the depth or range of a particular object or feature.