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Reduction of speckle noise in digital holography by using digital image processing |
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| Authors: | Jorge Garcia-Sucerquia Jorge Alexis Herrera Ramírez |
| Institution: | a Physics School, Universidad Nacional de Colombia Sede Medellín, A.A. 3840, Medellín, Colombia b Department of Physics, Dalhousie University, Halifax, NS, Canada B3H 3J5 c Basic Sciences Department, Universidad EAFIT, A.A. 3300, Medellín, Colombia |
| Abstract: | A fundamental problem in optical and digital holography is the presence of speckle noise in the reconstruction process. Many approaches have been carried out in order to overcome such a problem ranging from modifying the spatial coherence of the illumination (optical techniques) to image processing techniques (digital techniques). This work shows the merged use of digital image processing techniques in order to reduce the speckle noise in digital reconstruction of optically recorded Fresnel's holograms. The proposed filtering techniques are illustrated with experimental results. |
| Keywords: | Digital holography Speckle free reconstruction Fresnel's holograms |
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