Depixelation and enhancement of fiber bundle images by bundle rotation
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 10, 2020
- Source ID
- 10.1364/ao.59.000536
Entities
People
- Alyssa Licudine
- Carlos Renteria
- Javier Suárez
- Stephen A. Boppart
Organizations
- Air Force Office of Scientific Research
- National Institute of Biomedical Imaging and Bioengineering
- National Science Foundation