Investigations of three-dimensional shape perception for telepresence using superquadric primitives

Roger A. Browse; James C. Rodger

doi:10.1117/12.172674

1 May 1994 Investigations of three-dimensional shape perception for telepresence using superquadric primitives

Roger A. Browse, James C. Rodger

Proceedings Volume 2179, Human Vision, Visual Processing, and Digital Display V; (1994) https://doi.org/10.1117/12.172674
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

Abstract

Graphic displays for virtual environments and telerobotics require effective communication of the details of 3-D object shape. This paper presents empirical evidence on the relation between human perception and several properties of graphic shape depiction. A series of experiments examined a 3-D shape discrimination task requiring judgments of superquadric volume primitives varying in shape within different rendering and display conditions. The displays were dynamic, with constant rotational motion. Over the series of experiments, the contributions of diffuse and specular shading, occluding contour, aspect ratio, and covarying size were evaluated. The results revealed a consistent sensitivity to differences in superquadric shape parameters, that was surprisingly robust over rendering variations. One major finding was that the presence of specular highlights did not enhance shape discrimination performance beyond that observed for purely diffuse reflectance. The results suggest strategies for optimizing interface properties where 3-D shape is a primary component of the display. They also support the use of superquadric primitives in situations where humans interact with shape display systems.

Citation Download Citation

Roger A. Browse and James C. Rodger "Investigations of three-dimensional shape perception for telepresence using superquadric primitives", Proc. SPIE 2179, Human Vision, Visual Processing, and Digital Display V, (1 May 1994); https://doi.org/10.1117/12.172674

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