Estimation of Distances in Virtual Environments Using Size Constancy

Estimating distances and traveled distances in virtual and real environments

Virtual environments (VEs) have gained widespread use in recent years as a tool for training new skills, particularly in cases where training in the real environment can be risky or dangerous. But while there are many potential applications that could benefit from using VEs, our understanding of several basic perceptual and cognitive tasks in VEs distance and traveled distance estimation, speed...

Grasping lacks depth constancy in both virtual and real environments.

The use of virtual reality setups allows sophisticated manipulations of visual and haptic feedback important for the study of grasping movements. On this respect, the absence of feedback is shown to induce different systematic biases in visuomotor tasks, such as underestimation of the target distance and, above all, lack of the target depth constancy. The latter is revealed by a decrease in gri...

Factors Affecting the Perception of Interobject Distances in Virtual Environments

Haptic interfaces for virtual environments: perceived instability and force constancy in haptic sensing of virtual surfaces.

Haptic interfaces are becoming more commonplace in virtual environment and teleoperation systems. There is a growing need to not only continue to improve hardware platforms and rendering algorithms, but evaluate human performance with haptic interfaces. This review summarizes two recent studies inspired by perception problems in using haptic interfaces to interact with virtual environments. The...

Distance Estimation in Minimal Virtual Environments

This paper reports on an experimental study into distance estimation in a simple virtual environment. The results have been then compared with an experimental study of spatial cognition in the real world. It is concluded that the minimal virtual environment resembles a restricted Euclidean environment (or Euclidean environments viewed in a restricted or blinkered manner). 1. Spatial cognition a...