Evaluation Topics: Navigation
Travel is the motor component of navigation.
Real world - physical navigation task, such as moving feet, turning a steering wheel, turning around etcetera. Virtual world - translate or rotate the viewpoint and modify the conditions of movement, such as the velocity.
Navigation strategies
Exploration, the user has no specific goal for any of the movement that is performed.
Search, the user will have a specific goal or target to navigate to: naive search task (target position = unknown) & primed search task (target position is known)
Manoeuvring, local area, involves small and precise movements. E.g. take a closer look at an object.
Navigation characteristics
Distance, what’s the range, does it need velocity in order to provide a continuous flow?
Amount of turns and curvatures in the experience.
Visibility of the target at starting location
Degrees of Freedom needed for the movements.
Required accuracy of the movement.
Other primary tasks that take place parallel to the navigation task.
Navigation techniques
Walking
Real walking: VR has limited options, but for AR mobile apps, this is something to explore.
Redirected Walking can be used to create unlimited corridors and infinite stairs. Use with caution!
Scaled Walking: e.g. Seven League Boots Locomotion Technique: scaled walking approach by walking slow or uptempo.
Walk-in-Place: compromise, the sense of presence and real movement is diminished, low immersion.
Human Joystick: the user will move on a sensor-based platform in reality in order to navigate.
Human Joystick (other): the environment changes slightly while playing the game.
Teleporting: most common used method to navigate in VR.
Steering
Grabbing the Air Technique: like pulling a rope in the air.
Move Tour Own Body: Torso-directed Steering. and Lean-directed Steering. People naturally turn their bodies towards the direction that they are taking. With Lean-directed steering the user does not take any steps, but leans towards the direction he wants
Other techniques
Target-Based Travel Techniques (Google Maps) - Representation-based Target Technique: moving the avatar's position on a 2D-map and then the avatar will walk to this position in 3D.
Route-planning Travel Techniques - Drawing the desired path. - Marking points along a path.
Viewpoint manipulation technique - camera (in hand technique) - avatar (world-in-miniature) - fixed-object manipulation (viewpoint moves relative to the fixed object).
Active scaling - user takes active control in the scaling of the virtual world.
Automated scaling - multi-scale virtual environments, in where the system takes over sometimes, in order for users to stay focused on the right task.
Last updated
