Graphics processing unit restoration of non-uniformly warped images using a typical frame as prototype

Murat Tahtali; Andrew J. Lambert; Donald Fraser

doi:10.1117/12.860375

1 September 2010 Graphics processing unit restoration of non-uniformly warped images using a typical frame as prototype

Murat Tahtali, Andrew J. Lambert, Donald Fraser

Proceedings Volume 7800, Image Reconstruction from Incomplete Data VI; 78000H (2010) https://doi.org/10.1117/12.860375
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

Abstract

When imaging through the atmosphere, the resulting image contains not only the desired scene, but also the adverse effects of all the turbulent air mass between the camera and the scene. These effects are viewed as a combination of nonuniform blurring and random shifting of each point in the received short-exposure image. Corrections for both aspects of this combined distortion have been tackled reasonably successfully by previous efforts. We presented in an earlier paper a more robust method of restoring the geometry by redefining the place of the prototype frame and by reducing the adverse effect of averaging in the processing sequence. We present here a variant of this method using a Minimum Sum of Squared Differences (MSSD) cross-correlation registration algorithm implemented on a Graphics Processing Unit (GPU). The raw speed-up achieved using GPU code is in the order of x1000. Two orders of magnitude speed-up on the complete algorithm will allow for better fine tuning of this method and for experimentation with various registration algorithms.

Citation Download Citation

Murat Tahtali, Andrew J. Lambert, and Donald Fraser "Graphics processing unit restoration of non-uniformly warped images using a typical frame as prototype", Proc. SPIE 7800, Image Reconstruction from Incomplete Data VI, 78000H (1 September 2010); https://doi.org/10.1117/12.860375

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