Abstract

We discuss a three-dimensional sensor that combines coded illumination and triangulation. The sensor supplies the distance of ~250,000 object pixels (TV format) in 40 ms (one single TV frame period). The method is based on the following principle: a color spectrum of a white-light source is imaged onto the object by illumination from one certain direction. The object is observed by a color TV camera from a direction of observation, which is different from the direction of illumination. The color (hue) of each pixel is a measure of its distance from a reference plane. It can be evaluated by the three (red-green-blue) output channels of the CCD camera. This evaluation can be implemented within TV real time. Even colored objects can be measured. The resolution achieved is 50–150 depth steps.

© 1993 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Acquisition of 3-D data by focus sensing

K. Engelhardt and Gerd Häusler
Appl. Opt. 27(22) 4684-4689 (1988)

Color-coded projection grating method for shape measurement with a single exposure

Weiyi Liu, Zhaoqi Wang, Guoguang Mu, and Zhiliang Fang
Appl. Opt. 39(20) 3504-3508 (2000)

Time efficient color fringe projection system for 3D shape and color using optimum 3-frequency Selection

Zonghua Zhang, Catherine E. Towers, and David P. Towers
Opt. Express 14(14) 6444-6455 (2006)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (12)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription