Cart (Loading....) | Create Account
Close category search window

An iterative frequency-domain technique to reduce image degradation caused by lens defocus and linear motion blur

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Bhaskar, R. ; Lockheed Eng. & Sci. Co., Houston, TX, USA ; Hite, J. ; Pitts, D.E.

Imagery taken of the Space Shuttle is often degraded by lens defocus or image motion blur. Conventional space-domain filtering techniques allow enhancement of some features but also substantially increase noise. Frequency-domain techniques such as magnitude-phase merging or edge extraction often induce artifacts that degrade the image further. A procedure developed at the Video Digital Analysis System (VDAS) Laboratory at the Johnson Space Center approximates the modulation transfer function (MTF) of the input image from edge information within the scene and then utilizes an iterative technique to reduce the amount of blur. This work is intended to improve upon existing methods of image restoration given limited a priori scene information. These procedures were applied to a set of test images of the Space Shuttle obtained from film and video cameras at the launch site. Using these two sources gave a range of image quality over which to test the techniques. Separate procedures were developed to deal with linear motion blur and lens defocus. The iterative process allows the user to modify the frequency-domain filtering mechanism to achieve desired results. Output from these procedures showed a substantial visual improvement in image quality. Moreover, the techniques appeared to work as well on video as they did on film imagery. Future effort will be directed at reducing the ringing artifacts inherent in frequency-domain sharpening procedures

Published in:

Geoscience and Remote Sensing Symposium, 1994. IGARSS '94. Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation., International  (Volume:4 )

Date of Conference:

8-12 Aug 1994

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.