Share Email Print
cover

Proceedings Paper

Image analysis using modulated light sources
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

With the development of high-speed CMOS imagers, it is possible to acquire and process multiple images within the imager, prior output. We refer to an imaging architecture that acquires a collection of images and produces a single result as multiple capture single image (MCSI). In this paper we describe some applications of the MCSI architecture using a monochrome sensor and modulation light sources. By using active light sources. By using active light sources, it is possible to measure object information in a manner that is independent of the passive illuminant. To study this architecture, we have implemented a test system using a monochrome e CMOS sensor and several arrays of color LEDs whose temporal modulation can be precisely controlled. First, we report on experimental measurement that evaluate how well the active and passive illuminant can be separated as a function of experimental variables, including passive illuminant intensity, temporal sampling rate and modulation amplitude. Second, we describe two applications of this technique: (a) creating a color image from a monochrome sensor, and (b) measuring the spatial distribution of the passive illuminant.

Paper Details

Date Published: 15 May 2001
PDF: 9 pages
Proc. SPIE 4306, Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications II, (15 May 2001); doi: 10.1117/12.426961
Show Author Affiliations
Feng Xiao, Stanford Univ. (United States)
Jeffrey M. DiCarlo, Stanford Univ. (United States)
Peter Bert Catrysse, Stanford Univ. (United States)
Brian A. Wandell, Stanford Univ. (United States)


Published in SPIE Proceedings Vol. 4306:
Sensors and Camera Systems for Scientific, Industrial, and Digital Photography Applications II
Nitin Sampat; Morley M. Blouke; John Canosa; John Canosa; Nitin Sampat, Editor(s)

© SPIE. Terms of Use
Back to Top