21 March 1989 On The Computation Of Intrinsic Surface Properties With Structured Lighting
Author Affiliations +
Abstract
A new technique for computing intrinsic surface properties is developed in this research. Intrinsic surface properties refer to those properties of a surface which are not affected by the choice of the coordinate system, the position of the viewer relative to the surface, and the particular parametric representation used to describe the imaged surface. Since intrinsic properties are characteristics of a surface, they are ideal for the purposes of representation and recognition. The intrinsic properties which we are interested in are the principal curvatures, the intrinsic distance, and the lines of curvature. We propose to adopt a structured lighting sensing configuration where a grid pattern is projected to encode the object surfaces for analysis. At each stripe junction, the curvature of the projected stripe on the object surface is computed and related to that of the normal section which shares the same tangential direction as the projected curve. The principal curvatures and their directions at the stripe junction under consideration are then recovered using Euler's theorem. Application of this technique to represent and discriminate several simple surface types is also addressed.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Y. F. Wang, "On The Computation Of Intrinsic Surface Properties With Structured Lighting", Proc. SPIE 1095, Applications of Artificial Intelligence VII, (21 March 1989); doi: 10.1117/12.969282; https://doi.org/10.1117/12.969282
PROCEEDINGS
12 PAGES


SHARE
KEYWORDS
Optical spheres

Surface properties

Light sources and illumination

Structured light

Artificial intelligence

Evolutionary algorithms

Visualization

RELATED CONTENT

Experiments with driving modes for urban robots
Proceedings of SPIE (November 15 1999)
Rule-Based Orientation Recognition Of A Moving Object
Proceedings of SPIE (March 21 1989)
The Use Of Natural Constraints In Image Segmentation
Proceedings of SPIE (April 05 1985)
Structure from motion in real time
Proceedings of SPIE (March 11 1993)
Machine vision for precise control of weeds
Proceedings of SPIE (January 14 1999)

Back to Top