Work

Depixelation and enhancement of fiber bundle images by bundle rotation

Year: 2020

Type: article

Abstract: Fiber bundles have become widely adopted for use in endoscopy, live-organism imaging, and other imaging applications. An inherent consequence of imaging with these bundles is the introduction of a honeycomb-like artifact that arises from the inter-fiber spacing, which obscures features of objects in the image. This artifact subsequently limits applicability and can make interpretation of the image-based data difficult. This work presents a method to reduce this artifact by on-axis rotation of the fiber bundle. Fiber bundle images were first low-pass and median filtered to improve image quality. Consecutive filtered images with rotated samples were then co-registered and averaged to generate a final, reconstructed image. The results demonstrate removal of the artifacts, in addition to increased signal contrast and signal-to-noise ratio. This approach combines digital filtering and spatial resampling to reconstruct higher-quality images, enhancing the utility of images acquired using fiber bundles.

Source: Applied Optics

DOI: 10.1364/ao.59.000536

Authors: Carlos Renteria, Javier Suárez, Alyssa Licudine, Stephen A. Boppart

Institution: University of Illinois Urbana-Champaign

Language: English

Topic: Random lasers and scattering media

Subfield: Acoustics and Ultrasonics

Field: Physics and Astronomy

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: green

Funders: National Science Foundation, National Institute of Environmental Health Sciences, National Institute of Biomedical Imaging and Bioengineering, Air Force Office of Scientific Research