Share Email Print
cover

Optical Engineering

Photometric Method For Determining Surface Orientation From Multiple Images
Author(s): Robert J. Woodham
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

A novel technique called photometric stereo is introduced. The idea of photometric stereo is to vary the direction of incident illumination between successive images, while holding the viewing direction constant. It is shown that this provides sufficient information to determine surface orientation at each image point. Since the imaging geometry is not changed, the correspondence between image points is known a priori. The technique is photometric because it uses the radiance values recorded at a single image location, in successive views, rather than the relative positions of displaced features. Photometric stereo is used in computer-based image understanding. It can be applied in two ways. First, it is a general technique for deter-mining surface orientation at each image point. Second, it is a technique for determining object points that have a particular surface orientation. These applications are illustrated using synthesized examples.

Paper Details

Date Published: 1 February 1980
PDF: 6 pages
Opt. Eng. 19(1) doi: 10.1117/12.7972479
Published in: Optical Engineering Volume 19, Issue 1
Show Author Affiliations
Robert J. Woodham, University of British Columbia (Canada)


© SPIE. Terms of Use
Back to Top