Tile-Based Two-Dimensional Phase Unwrapping for Digital Holography Using a Modular Framework.

ABSTRACT: A variety of physical and biomedical imaging techniques, such as digital holography, interferometric synthetic aperture radar (InSAR), or magnetic resonance imaging (MRI) enable measurement of the phase of a physical quantity additionally to its amplitude. However, the phase can commonly only be measured modulo 2π, as a so called wrapped phase map. Phase unwrapping is the process of obtaining the underlying physical phase map from the wrapped phase. Tile-based phase unwrapping algorithms operate by first tessellating the phase map, then unwrapping individual tiles, and finally merging them to a continuous phase map. They can be implemented computationally efficiently and are robust to noise. However, they are prone to failure in the presence of phase residues or erroneous unwraps of single

SUBMITTER: Antonopoulos GC 

PROVIDER: S-EPMC4657957 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature