Experimental reconstruction for inverse scattering of one-dimensional surfaces

Gu, Zu-Han; Wang, Anting

doi:10.1117/12.732559

SPIE Proceedings

2007

DOI: 10.1117/12.732559

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Experimental reconstruction for inverse scattering of one-dimensional surfaces

Zu-Han Gu

Anting Wang

Abstract: We have studied the inverse scattering problem as an optimization problem for a 1-D surface. As the input data for our self-adaptation genetic algorithm for surface inversion, the scattered intensity has been measured with the laser BRDF instruments. In addition, the transmission data are collected. The typical reconstruction of inverse scattering for a 1-D random surface is compared with the profile measured by an atomic force microscope (AFM).

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Cited by 2 publications

References 14 publications

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Reconstruction of a one-dimensional surface from inverse transmission

et al. 2008

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An optimization algorithm for the reconstruction of a surface profile is presented. This algorithm uses the far-field transmitted intensity to retrieve the surface profile of a thin film. We approach the inverse transmission problem as a constrained optimization problem. A mathematical representation of the surface based on B-spline curves and an optimum profile search with the self-adaptation evolutionary strategy (ES) are adopted. As the input data for the ES algorithm for surface inversion, the transmitted intensity has been measured by both a laser bidirectional reflectometer instrument and an in-line digital speckle camera system. The reconstructed 1D surfaces are compared with the profile measured by an atomic force microscope.

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Reconstruction of a one-dimensional surface from inverse transmission

et al. 2008

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Measurement of a bidirectional reflectance distribution and system achievement based on a hemi-parabolic mirror

Ren¹,

Zhao²

2010

Opt. Lett.

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A novel approach is proposed for measuring a surface's bidirectional reflectance distribution function rapidly and accurately. By using a hemi-parabolic mirror, the angular distribution of a surface's reflectance in three-dimensional space can be transformed into a two-dimensional planar image, which is collected by a CCD camera and goes through a followed coordinate mapping. It is shown that, using this method and apparatus, measurement of in plane and out of plane reflectance distributions may be realized within two minutes.

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Experimental reconstruction for inverse scattering of one-dimensional surfaces

Cited by 2 publications

References 14 publications

Reconstruction of a one-dimensional surface from inverse transmission

Reconstruction of a one-dimensional surface from inverse transmission

Measurement of a bidirectional reflectance distribution and system achievement based on a hemi-parabolic mirror

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