Absorbers were imaged through a highly scattering material by application of spectral holography. A broad-spectrum source forms the spectral hologram of light transmitted by a diffuser, and computer processing reconstructs a series of images of the diffuser as it would have appeared with scattered light that traveled different path lengths. One of these reconstructed images is certain to be an image formed with first-arriving light and is therefore an image of the diffuser as seen with the least-scattered light. Experimental results present an image of an absorber hidden by a diffuser in which the gating was done by computer.
© 1999 Optical Society of America
(090.1760) Holography : Computer holography
(100.2960) Image processing : Image analysis
(100.3010) Image processing : Image reconstruction techniques
(120.3940) Instrumentation, measurement, and metrology : Metrology
(300.6480) Spectroscopy : Spectroscopy, speckle
Marian P. Shih, "Spectral Holography for Imaging Through Scattering Media," Appl. Opt. 38, 743-750 (1999)