Speckle Noise Reduction in Digital Holography Using a DMD and Multi-Hologram Resampling

Autor: Nelson Alonso Correa-Rojas, Jorge Herrera-Ramírez, John Restrepo
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Computer science
Noise reduction
Phase (waves)
Holography
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION
Physics::Optics
02 engineering and technology
lcsh:Technology
01 natural sciences
digital holography
Digital micromirror device
law.invention
lcsh:Chemistry
010309 optics
Reduction (complexity)
Speckle pattern
law
0103 physical sciences
General Materials Science
Computer vision
digital micromirror device
lcsh:QH301-705.5
Instrumentation
ComputingMethodologies_COMPUTERGRAPHICS
Fluid Flow and Transfer Processes
noise reduction
lcsh:T
business.industry
Process Chemistry and Technology
General Engineering
Speckle noise
021001 nanoscience & nanotechnology
lcsh:QC1-999
Computer Science Applications
lcsh:Biology (General)
lcsh:QD1-999
lcsh:TA1-2040
Artificial intelligence
speckle
lcsh:Engineering (General). Civil engineering (General)
0210 nano-technology
business
lcsh:Physics
Digital holography
Zdroj: Applied Sciences
Volume 10
Issue 22
Applied Sciences, Vol 10, Iss 8277, p 8277 (2020)
ISSN: 2076-3417
DOI: 10.3390/app10228277
Popis: Speckle noise is a well-documented problem on coherent imaging techniques like Digital Holography. A method to reduce the speckle noise level is presented, based on introducing a Digital Micromirror Device to phase modulate the illumination over the object. Multiple holograms with varying illuminations are recorded and the reconstructed intensities are averaged to obtain a final improved image. A simple numerical resampling scheme is proposed to further improve noise reduction. The obtained results demonstrate the effectiveness of the hybrid approach.
Databáze: OpenAIRE