Share Email Print
cover

Proceedings Paper

Development of a wavelength-changeable multiband color-mixing imaging device and its application
Author(s): Fujian Ding; Yud-Ren Chen; Kaunglin Chao; Diane E. Chan
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

Previously, we showed that two- and three-band color-mixing techniques could be used to achieve results optically equivalent to two- and three-band ratios that are normally implemented using multispectral imaging systems, for enhancing identification of single target types against a background and for separation of multiple targets by color or contrast. In this paper, a prototype of a wavelength-changeable two- and three-band color-mixing device is presented and its application is demonstrated. The wavelength-changeable device uses changeable central wavelength bandpass filters and various filter arrangements. The experiments showed that a color-mixing technique implemented in a pair of binoculars coupled with an imager could greatly enhance target identification of color-blindness test cards with hidden numbers and figures as the targets. Target identification of color blindness cards was greatly improved by using twoband color-mixing with filters at 620 nm and 650 nm, which were selected based on the criterion of uniform background. Target identification of a different set of color blindness test cards was also improved using three-band color-mixing with filters at 450 nm, 520 nm, and 632 nm, which were selected based on the criterion of maximum chromaticness difference. These experiments show that color-mixing techniques can significantly enhance electronic imaging and visual inspection.

Paper Details

Date Published: 21 February 2007
PDF: 12 pages
Proc. SPIE 6501, Sensors, Cameras, and Systems for Scientific/Industrial Applications VIII, 65010W (21 February 2007); doi: 10.1117/12.723438
Show Author Affiliations
Fujian Ding, USDA Agricultural Research Service (United States)
Yud-Ren Chen, USDA Agricultural Research Service (United States)
Kaunglin Chao, USDA Agricultural Research Service (United States)
Diane E. Chan, USDA Agricultural Research Service (United States)


Published in SPIE Proceedings Vol. 6501:
Sensors, Cameras, and Systems for Scientific/Industrial Applications VIII
Morley M. Blouke, Editor(s)

© SPIE. Terms of Use
Back to Top