Digital correction of keystoning caused by image translation

David F. McAllister

doi:10.1117/12.173865

15 April 1994 Digital correction of keystoning caused by image translation

David F. McAllister

Proceedings Volume 2177, Stereoscopic Displays and Virtual Reality Systems; (1994) https://doi.org/10.1117/12.173865
Event: IS&T/SPIE 1994 International Symposium on Electronic Imaging: Science and Technology, 1994, San Jose, CA, United States

Abstract

Translating rectangular 2D images in planes perpendicular to the line of sight can create image distortion known as keystoning or projection warp. This can occur when viewing several images on a plane from a fixed position, when cross viewing, or when using non-parallel mirrors to view stereo pairs. In the latter case, vertical disparity can become a problem. The projection warp and its inverse are derived as functions of the viewing and translation parameters. It is shown that vertical disparity can be significant, even in small image translations. The inverse transformation applied to the original image corrects the keystoning caused by the translation. Rendering of the inverse image is also discussed.

Citation Download Citation

David F. McAllister "Digital correction of keystoning caused by image translation", Proc. SPIE 2177, Stereoscopic Displays and Virtual Reality Systems, (15 April 1994); https://doi.org/10.1117/12.173865

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