As Nixon's unpopularity increased during Watergate, his nose and jowls grew to impossible
proportions in published caricatures. Yet the caricatures remained instantly recognizable …

Navigation has always been an interdisciplinary topic of research, because mobile agents of
different types are inevitably faced with similar navigational problems. Therefore, human …

Arguably the most foundational principle in perception research is that our experience of the
world goes beyond the retinal image; we perceive the distal environment itself, not the …

Abstract I. Biederman and PC Gerhardstein (1993) demonstrated that a representation
specifying a distinctive arrangement of viewpoint-invariant parts (a geon structural …

Much of the work in vision in the last decade has examined what low-level vision tells high
level vision. Cues such as optic flow, depth of focus, and contour intersections have been …

ONE of the most remarkable characteristics of the human visual system is its ability to
perceive specific three-dimensional forms in single two-dimensional contour images. This …

Spatial representations, when used well, support learning in reading, mathematics, and
science. They also enable mental simulations and visualizations that prompt innovation and …

We describe a novel approach, based on ideal observer analysis, for measuring the ability
of human observers to use image information for 3D object perception. We compute the …

Background: Human observers can recognize three-dimensional objects seen in novel
orientations, even when they have previously seen only a relatively small number of different …

We explore representation of 3D objects in which several distinct 2D views are stored for
each object. We demonstrate the ability of a two-layer network of thresholded summation …