3D RTM-based wave-path tomography: theory and applications to synthetic and field data

Bakker, P. M.; Gerritsen, Sijmen; Cao, Q.; Daalen, Diederik van; Duveneck, Eric

doi:10.1190/segam2015-5717655.1

Cited by 5 publications

(1 citation statement)

References 19 publications

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“…With the continuous development of the Internet and multimedia technology, the computer's configuration memory and disk are constantly expanding, leading to the realization of drawing of images and graphics through the computer [1], which improves the utilization of data in the threedimensional data field and makes people play a dominant role in the process by realizing the interaction between people, data and images [2].…”

Section: Introductionmentioning

confidence: 99%

Research on Graphics Algorithm and Real-Time Drawing Technology in 3d Data Field

2018

IJOMAM

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With the continuous development of graphic image processing technology, threedimensional data is being widely used in various fields. However, difficulty still exists in graphic and image processing in three-dimensional data field. This paper applied ray projection algorithm and interpolation algorithm for graphic processing and combined acceleration algorithm with texture mapping technology to draw real-time images. By drawing a semi-sphere with the computer, the effect of the algorithms was detected. Meanwhile, in order to reduce the influence of image noise in the three-dimensional data field, three-dimensional polishing algorithm was applied for optimization. It was found that the drawn images were clear and the drawing speed was fast, suggesting that the algorithms were helpful in drawing 3D graphics and worth being promoted for wide application.

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Section: Introductionmentioning

confidence: 99%

Research on Graphics Algorithm and Real-Time Drawing Technology in 3d Data Field

2018

IJOMAM

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Seismic differential semblance-oriented migration velocity analysis — Status and the way forward

Chauris,

Farshad

2023

GEOPHYSICS

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Differential Semblance Optimization (DSO) is a seismic waveform inversion approach. It has been proposed to remove the limitation of conventional full waveform inversion as a velocity model building tool when only reflected waves are available. It has connections with Migration Velocity Analysis (MVA) techniques defined in the image domain to build macro velocity models, with a splitting between the macro-model and the small-scale heterogeneities. Among the various DSO approaches, DSO-MVA has unique characteristics for complex velocity model building, while ensuring the convergence to the global minimum in a local optimization approach: the wavefields are computed with the two-way wave equation operators, focusing panels are built in a survey-sinking mode and the quality of the macro velocity model is evaluated on common image gathers in the subsurface offset domain through a differential annihilator. We review here the significant aspects that have been better understood over the last fifteen years and discuss the way forward. A first identified issue has been the imprint of the small-scale heterogeneities on the macro-model update that was revealed with the use of wave-equation based Green's functions and an ad-hoc solution was later proposed by slightly modifying the definition of the objective function. A second important aspect has been the development of efficient approaches to compute the required quantitative migration based on approximate inverses to replace the previously used migrations. The issue of correctly interpreting the amplitudes has also moved into one of an improved model parameterization, i.e. from constant-density acoustics media to full acoustic media as a path towards fully visco-elastic media. Finally, we discuss the way forward with the challenges of extending DSO-MVA beyond the single scattering approximation, for processing diving waves and multiples, but also the challenge of the numerical implementation, that remains critical even in 2D, for an applicability on large-scale real data.

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Pitfalls in a class of automatic wave-equation tomographic methods

Liu

et al. 2017

SEG Technical Program Expanded Abstracts 2017

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3D RTM-based wave-path tomography: theory and applications to synthetic and field data

Cited by 5 publications

References 19 publications

Research on Graphics Algorithm and Real-Time Drawing Technology in 3d Data Field

Research on Graphics Algorithm and Real-Time Drawing Technology in 3d Data Field

Seismic differential semblance-oriented migration velocity analysis — Status and the way forward

Pitfalls in a class of automatic wave-equation tomographic methods

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