Dynamic optical tomography: Resolution and contrast enhancement by frequency-filtering

Randall L. Barbour et al. (1999)


In this report we demonstrate the capacity to significantly enhance the resolution and contrast of internal structures imaged by dynamic optical tomography. We recognize that the presence of time–harmonic behavior (e.g., vasomotion) permits use of simple feature–extraction protocols capable of producing a high-contrast image. Results obtained from numerical simulation of a medium expeiencing spatially localized harmonic behavior showed that target contrast could be improved by a factor of 40, accompanied by a marked improvement in resolution.