Restoration of images degraded by extreme mechanical vibrations

O. Hadar, Z. Adar, A. Cotter, N. S. Kopeika

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

A method of numerically calculating the optical transfer function appropriate to any type of image motion and vibration, including random, has been recently developed. This method has been verified experimentally with real vibrations, and the close agreement justifies implementation in image restoration from blur deriving from any type of image motion, including random displacement. Here, image restorations of actual physically degraded images are presented, based on a constrained least squares improvement of the original Wiener filter. Even for extreme vibrations where the blur extent is much larger than the blurred detail, restoration is quite complete. The key to restoration is the determination of the optical transfer function unique to the particular image motion and vibration causing the blur. Results are also presented for low vibration frequency motion of random blur extent, as well as for high vibration frequencies.

Original languageEnglish
Pages (from-to)171-177
Number of pages7
JournalOptics and Laser Technology
Volume29
Issue number4
DOIs
StatePublished - 1 Jan 1997

Keywords

  • Image restoration optomechanics
  • Motion
  • Optical transfer function
  • Vibrations

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