Journal article

Change blindness for cast shadows in natural scenes: Even informative shadow changes are missed.

Krista A Ehinger, Kala Allen, Jeremy M Wolfe

Atten Percept Psychophys | Published : 2016

Abstract

Previous work has shown that human observers discount or neglect cast shadows in natural and artificial scenes across a range of visual tasks. This is a reasonable strategy for a visual system designed to recognize objects under a range of lighting conditions, since cast shadows are not intrinsic properties of the scene-they look different (or disappear entirely) under different lighting conditions. However, cast shadows can convey useful information about the three-dimensional shapes of objects and their spatial relations. In this study, we investigated how well people detect changes to cast shadows, presented in natural scenes in a change blindness paradigm, and whether shadow changes that..

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