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Q-compensation Through Depth Domain Inversion
Proceedings, 2015We propose a new method that enables Q-compensation after depth imaging and within the framework of depth domain inversion. The approach relies on deterministic operators that capture the dip-dependent amplitude and phase anelastic effects seen by the waves as they propagate through a 3D anelastic medium, and corrects for them by inversion in the image
M. Cavalca, R.P. Fletcher, X. Du
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INVERSE MONOIDS OF DOT-DEPTH TWO
International Journal of Algebra and Computation, 1993It is shown that the pseudovariety of inverse monoids of dot-depth two is decidable and is equal to the Malcev product of the pseudovariety generated by the 5 element Brandt semigroup and the variety of semilattices.
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Water depth inversion from satellite dataset
2014 IEEE Geoscience and Remote Sensing Symposium, 2014Within an effort to estimate near-shore bathymetry from satellite scenes, a method based on wave celerity and wavelength estimation is developed. These wave characteristics are extracted from SPOT-5 panchromatic and multispectral scenes. The method allows us to associate the wavelength and the celerity of the same detected wave and to estimate the ...
Poupardin, Adrien +3 more
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Depth Perception in Linear and Inverse Perspective Pictures
Perception, 1981The range of pictorial depth perception was tested with four pictures from the repertoire of European art, rather than the customary line drawings or photographs. These pictures included those rendered in linear perspective and inverse perspective, as well as those with different degrees of depth. Using Pandora’ Box, the subjects were asked to place a
D R, Topper, W A, Simpson
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The inverse problem of depth dose curve estimation
Physics in Medicine and Biology, 1997The inverse problem of the depth dose curve is formulated and a proposition for its solution is presented. The solution is based on the approximation of the observation equation with a numerical quadrature operator and the regularization of this inverse problem with a smoothness side constraint.
M, Juntunen, J P, Kaipio
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Reduced binocular depth inversion in regular cannabis users
Pharmacology Biochemistry and Behavior, 2003The binocular depth inversion illusion (BDII) has been shown to be a sensitive measure of impaired visual information processing under conditions including cannabinoid-intoxicated states, alcohol withdrawal, sleep deprivation, and in patients with positive symptoms of schizophrenia.
David M, Semple +2 more
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AVO inversion on depth migrated traces
SEG Technical Program Expanded Abstracts 2001, 2001It is generally recognized that avo inversion is better conducted on depth migrated traces, although it is not often done because of computational costs and the fact that it may provide only marginal improvement in regions of low dip and small lateral velocity gradients.
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Depth of Investigation for Multi-parameters Inversions
Proceedings, 2015We have developed a new robust concept for the calculation of the depth of investigation (DOI) for inversion problems described by several intrinsic parameters, like the spectral inversion of time-domain induced polarization data or the inversion of full-decay Nuclear Magnetic Resonance soundings.
G. Fiandaca, A.V. Christiansen, E. Auken
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Depth-Domain Inversion for Enhanced Quantitative Interpretation
First EAGE Conference on Seismic Inversion, 2020Summary Least-squares migration can help mitigate non-geological amplitude variations caused by uneven illumination. In this paper, we apply least-squares migration in the image domain to recover acoustic or elastic properties. Dipdependent illumination and wavelet stretch effects are captured using point spread functions (PSFs) and mitigated through ...
M. Cavalca +4 more
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Full-waveform Seismic Inversion at Reservoir Depths
Proceedings, 2012We apply 3D anisotropic acoustic full-waveform tomographic seismic inversion to a North Sea wide-angle OBC dataset, and demonstrate that our recovered velocity model is realistic within the chalk reservoir sequence to depths of up to 4000 m. Because we use predominantly wide-angle refracted arrivals in the inversion, we are able to undershoot and image
T. Nangoo +5 more
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