High focal depth by apodization and digital restoration
- 15 June 1988
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 27 (12) , 2583-2586
- https://doi.org/10.1364/ao.27.002583
Abstract
We show that by using an iterative, digital restoration algorithm (Wiener or Kalman), it is possible to improve substantially the defocused optical transfer function of a previously apodized optical system. Consequently, high focal depth can be achieved by the use of an apodizer at the recording step, and a posteriori step of digital restoration. Computer-simulated images exhibit the focal depth achieved.Keywords
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