Speckle Noise Reduction in Digital Holography by 3D Adaptive Filtering.

ABSTRACT: Digital holography enables the reconstruction of both 2D and 3D object information from interference patterns captured by digital cameras. A major challenge in this field is speckle noise, which significantly degrades the quality of the reconstructed images. We propose a novel speckle noise reduction method based on 3D adaptive filtering. Our technique processes a stack of holograms, each with an uncorrelated speckle pattern, using an adapted 3D Frost filter. Unlike conventional filtering techniques, our approach exploits statistical adaptivity to enhance noise suppression while preserving fine image details in the reconstructed holograms. Both numerical simulations and optical experiments confirm that our 3D filtering technique significantly enhances reconstruction quality. Specifically,

SUBMITTER: Kerov AA 

PROVIDER: S-EPMC12430975 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature