Real time phase diversity advanced image processing and wavefront sensing

Jean J. Dolne; Paul Menicucci; David Miccolis; Ken Widen; Harold Seiden; Frederick Vachss; Harold Schall

doi:10.1117/12.740064

26 September 2007 Real time phase diversity advanced image processing and wavefront sensing

Jean J. Dolne, Paul Menicucci, David Miccolis, Ken Widen, Harold Seiden, Frederick Vachss, Harold Schall

Proceedings Volume 6712, Unconventional Imaging III; 67120G (2007) https://doi.org/10.1117/12.740064
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

This paper will describe a state-of-the-art approach to real time wavefront sensing and image enhancement. It will explore Boeing existing technology that realizes a 50 Hz frame rate (with a path to 1 KHz and higher). At this higher rate, Phase diversity will be readily applicable to compensate for distortions of large dynamic bandwidth such as those of the atmosphere. We will describe various challenges in aligning a two-camera phase diversity system. Such configurations make it almost impossible to process the captured images without additional upgrade in the algorithm to account for alignment errors. An example of an error is the relative misalignment of the two images, the "best-focus" and the diversity image where it is extremely hard to maintain alignment to less than a fraction of one pixel. We will show that the algorithm performance increases dramatically when we account for these errors in the phase diversity estimation process. Preliminary evaluation has assessed a NIIRS increase of ~ 3 from the "best-focus" to the enhanced image. Such a performance improvement would greatly increase the operating range (or, equivalently, decrease the weight) of many optical systems.

Citation Download Citation

Jean J. Dolne, Paul Menicucci, David Miccolis, Ken Widen, Harold Seiden, Frederick Vachss, and Harold Schall "Real time phase diversity advanced image processing and wavefront sensing", Proc. SPIE 6712, Unconventional Imaging III, 67120G (26 September 2007); https://doi.org/10.1117/12.740064

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