Improvement in visibility of an in-focus reconstructed image in digital holography by reduction of the influence of out-of-focus objects
| Autor: | Catherine Yourassowsky, Jean Claude Legros, Olivier Monnom, Frank Dubois |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Diffraction
Computer science Materials Science (miscellaneous) Holography Image processing Industrial and Manufacturing Engineering law.invention Optics law Image Interpretation Computer-Assisted Microscopy Digital image processing Computer Graphics Business and International Management business.industry Visibility (geometry) Digital imaging Numerical Analysis Computer-Assisted Signal Processing Computer-Assisted Image Enhancement Ptychography Digital holographic microscopy business Focus (optics) Algorithms Tomography Optical Coherence Digital holography |
| Zdroj: | Applied Optics. 44:3827 |
| ISSN: | 1539-4522 0003-6935 |
| DOI: | 10.1364/ao.44.003827 |
| Popis: | When a reconstruction is performed on a digital holographic image that contains small objects at different depths, diffraction that is due to out-of-focus objects disrupts the visibility of the nearby focused objects. We propose a method to substitute for focused object amplitudes other amplitudes that will reduce propagation diffraction effects when other depths are investigated. The replacement amplitudes are computed by use of an algorithm that reduces the highest spatial frequencies of the resultant image. The theoretical aspects of the method are presented, and results for simulated and experimental examples are shown. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|