title: Measuring perceived 3D shape at multiple spatial scales.
abstract: We present and test a novel multiscale representation of perceived 3D surface orientation: the orientation path. Using a multiscale probe, we measure perceived surface orientation at multiple spatial scales; linking the measurements for a given surface location yields that location's orientation path. The multiscale data obtained show that observers consistently see different surface orientations at different spatial scales. We demonstrate that such multiscale data can reveal multiscale differences between observers' percepts of a stimulus and the stimulus geometry. We also demonstrate the use of the orientation path in evaluating the multiscale effects of adding a depth cue to a 3D display.
authors.affiliation: Department of Computer Science, University of North Carolina at Chapel Hill 27599-3175, USA. brownp@cs.unc.edu
authors.forename: P H
authors.initials: PH
authors.lastname: Brown
authors.forename: C A
authors.initials: CA
authors.lastname: Burbeck
mesh_terms: D003196:Computer Graphics; D003463:Cues; D003867:Depth Perception / Q000502:physiology*; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D011594:Psychometrics; D012399:Rotation