deflectometry

Compressive Imaging and Characterization of Sparse Light Deflection Maps

Abstract: Light rays incident on a transparent object of uniform refractive index undergo deflections, which uniquely characterize the surface geometry of the object. Associated with each point on the surface is a deflection map (or spectrum) which describes the pattern of deflections in various directions.
2015 SIAM Journal on Imaging Sciences
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Compressed Sensing in Optics: Schlieren Deflectometry and Refractive Index Map Reconstruction

Compressive Acquisition of Sparse Deflectometric Maps

Abstract: Schlieren deflectometry aims at measuring deflections of light rays from transparent objects, which is subsequently used to characterize the objects. With each location on a smooth object surface a sparse deflection map (or spectrum) is associated.
2013 Proceedings of the 10th International Conference on Sampling Theory and Applications (SampTA)
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Compressive Schlieren Deflectometry

Abstract: Schlieren deflectometry aims at characterizing the deflections undergone by refracted incident light rays at any surface point of a transparent object. For smooth surfaces, each surface location is actually associated with a sparse deflection map (or spectrum).
2013 Proceedings of ICASSP 2013
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Sparsity-driven optical deflection tomography with non-linear light ray propagation

Abstract: Optical deflection tomography based on phase-shifting Schlieren is well adapted for three-dimensional imaging of objects with large refractive index variations. We propose a reconstruction algorithm that takes into account light refraction and spatial sparsity of the sample.
2012 Optimess 2012
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TV-$\ell_{2}$ Refractive Index Map Reconstruction from Polar Domain Deflectometry

2012 Proc. 1st international Traveling Workshop for Interacting Sparse models and Technology (iTWIST'12), Marseille, France
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Primal-Dual TV Reconstruction in Refractive Deflectometry

2011 Proc. Spars'11, Edinburgh, UK
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Refractive index map reconstruction in optical deflectometry using total-variation regularization

2011 SPIE - the International Society for Optical Engineering. Proceedings
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Optical tomography based on phase-shifting schlieren deflectometry

Abstract: We present a new optical tomography technique based on phase-shifting schlieren deflectometry. The principle is that of computerized tomography. The three-dimensional profile is reconstructed from the deflection angles of rays passing through the tested object.
2010 Optical Sensing and Detection
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