Intensified multispectral imaging measuring in the spatial, frequency, and time domains with a single instrument

Benjamin J. Kennedy

doi:10.1117/12.23385

1 January 1991 Intensified multispectral imaging measuring in the spatial, frequency, and time domains with a single instrument

Benjamin J. Kennedy

Author Affiliations +

Proceedings Volume 1346, Ultrahigh- and High-Speed Photography, Videography, Photonics, and Velocimetry '90; (1991) https://doi.org/10.1117/12.23385
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

Traditional multispectral and intensified video technologies are a perfect match for a variety of applications. Described here is an instrument which combines these technologies with advanced microprocessor control and high-speed electronic gating to provide the core for a new type of measurement system. Such a system is particularly suited to remote-sensing work with small aircraft but its high sensitivity and calibration capabilities make it a flexible tool for multispectral measurement detection and classification applications in the laboratory or in the field. 1. A MULTISPECTRAL VIDEO PRIMER Multispectral imaging differs from ordinary imaging in that each scene is separated into several spectral " slices. " Thus a multispectral picture is a set of images from which we can extract not only spatial information but spectral content as well. With the proper image processing techniques objects or substances can be detected or classified by their spectral signatures on a pixel-by-pixel basis. In conventional multispectral video cameras a wheel housing a set of optical filters rotates in front of the camera''s image sensor. This filter wheel spins synchronously to the video scan rate so that for every image output by the camera a different filter exposes the image sensor. Thus the camera outputs a repeating sequence of images each measuring the response of the subject in a different region of the spectrum. The overall spectral response of a conventional multispectral camera is dictated by

Citation Download Citation

Benjamin J. Kennedy "Intensified multispectral imaging measuring in the spatial, frequency, and time domains with a single instrument", Proc. SPIE 1346, Ultrahigh- and High-Speed Photography, Videography, Photonics, and Velocimetry '90, (1 January 1991); https://doi.org/10.1117/12.23385

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Video

Cameras

Optical filters

Image filtering

Imaging systems

Charge-coupled devices

Image intensifiers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years