Detection of inhomogeneities in diffusive media using spatially modulated light.

The use of structured light for object localization in diffusive media is discussed. The improvement of spatial resolution is shown. Phase detection of the spatially modulated light is proposed as a method for the localization of inclusions in the medium. Fast three-dimensional localization of an absorbing object based on finite-element analysis reconstruction is demonstrated with experimental data.

[1]  Anthony J. Durkin,et al.  Spatial shift of spatially modulated light projected on turbid media. , 2008, Journal of the Optical Society of America. A, Optics, image science, and vision.

[2]  Rinaldo Cubeddu,et al.  Temporal propagation of spatial information in turbid media. , 2008, Optics letters.

[3]  Wolfgang Bangerth,et al.  Non-contact fluorescence optical tomography with scanning patterned illumination. , 2006, Optics express.

[4]  Vadim A. Markel,et al.  Inverse scattering with diffusing waves. , 2001, Journal of the Optical Society of America. A, Optics, image science, and vision.

[5]  E. Gratton,et al.  The Measurement and Analysis of Heterogeneous Emissions by Multifrequency Phase and Modulation Fluorometry , 1984 .

[6]  T. Wilson,et al.  Method of obtaining optical sectioning by using structured light in a conventional microscope. , 1997, Optics letters.

[7]  V. Srinivasan,et al.  Automated phase-measuring profilometry of 3-D diffuse objects. , 1984, Applied optics.

[8]  Vadim A. Markel,et al.  Optical tomography with structured illumination. , 2009, Optics letters.

[9]  B Chance,et al.  Highly sensitive object location in tissue models with linear in-phase and anti-phase multi-element optical arrays in one and two dimensions. , 1993, Proceedings of the National Academy of Sciences of the United States of America.

[10]  Anthony J. Durkin,et al.  Modulated imaging: quantitative analysis and tomography of turbid media in the spatial-frequency domain. , 2005, Optics letters.