Search Results - "Ramirez, Ana B."

Comparative analysis of 3D RTM Implementation Strategies for an Efficient Use of Memory in a Single GPU by Salamanca, William, Ramírez- Silva, Ana Beatríz, Vivas, Flor Alba

“…Reverse-Time Migration (RTM) is a two-way wave-equation based method used to generate images of the Earth’s subsurface. RTM has been successfully used in…”
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Full Waveform Inversion in generalized coordinates for zones of curved topography by Arias- Chica, César Augusto, Abreo, David, Abreo, Sergio, Duque- Gómez, Luis Fernando, Ramírez- Silva, Ana Beatríz

“…Full waveform inversion (FWI) has been recently used to estimate subsurface parameters, such as velocity models. This method, however, has a number of…”
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Accelerated 2D FWI using the symmetry on inner product spaces by Noriega, Reynaldo Fabian, Abreo- Carillo, Sergio Alberto, Ramírez- Silva, Ana Beatríz

“…Full Waveform Inversion (FWI) is a common technique used in the oil and gas industry due to its capabilities to estimate subsurface characteristics such as…”
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Optimal coding of blended seismic sources for 2D full waveform inversion in time by Flórez, Katherine, Abreo Carrillo, Sergio Alberto, Ramírez Silva, Ana Beatriz

“…Full Waveform Inversion (FWI) schemes are gradually becoming more common in the oil and gas industry, as a new tool for studying complex geological zones,…”
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Estimation of Caving volumetric-flow using the ultrasonic Doppler method by Ramirez-Silva, Luis-Fernando, Carvajal-Jiménez, Jenny-Mabel, Ramirez, Ana B

“…Estimating the volumetric flow of cuttings and cavings that are extracted and transported by the drilling mud into the flow line while drilling a well is of…”
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A practical implementation of acoustic full waveform inversion on graphical processing units by Abreo Carrillo, Sergio Alberto, Ramirez, Ana B., Reyes, Oscar, Abreo-Carrillo, David Leonardo, González Alvarez, Herling

“…Recently, Full Waveform Inversion (FWI) has gained more attention in the exploration geophysics community as a data fitting method that provides…”
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Sparsity constrained contrast source inversion by Ramirez, Ana B., van Dongen, Koen W. A.

“…Ultrasound imaging is used for detecting and characterizing breast lesions. A state of the art imaging method is the contrast source inversion (CSI), which…”
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Robust compressive sensing of sparse signals: a review by Carrillo, Rafael E., Ramirez, Ana B., Arce, Gonzalo R., Barner, Kenneth E., Sadler, Brian M.

“…Compressive sensing generally relies on the ℓ 2 norm for data fidelity, whereas in many applications, robust estimators are needed. Among the scenarios in…”
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Comparative analysis of matching pursuit algorithms for Kirchhoff migration on compressed data by Fajardo, Carlos A., Sánchez, Fabián, Ramirez, Ana B.

“…Currently, the amount of recorded data in a seismic survey is in the order of hundreds of Terabytes. The processing of such amount of data implies significant…”
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A practical guide of the 2D acoustic full waveform inversion on synthetic land seismic data by Torres Acelas, Luisa Fernanda, Ramirez Silva, Ana Beatriz, Abreo Carrillo, Sergio Alberto

“…Full Waveform Inversion (FWI) has been successfully applied in seismic hydrocarbon exploration as it results in the highest resolution inverted velocity and…”
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Design of a Synthetic Breast Ultrasound Image Database by Solano, Juan C., Ramirez, Ana B., Abreo, Sergio A.

“…Finding ultrasound databases for testing new imaging methods can be a challenge, especially when it comes to medical data, as these data are often subject to…”
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Multi-Physics Inversion of Acoustic and Electromagnetic Wave Fields by Ramirez, Ana B., de Wit, Anne V., van Dongen, Koen W.A.

“…Multi-modality or multi-physics imaging is gaining interest beacuase it overcomes the limitations of a single imaging modality, as each modality typically…”
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Time Versus Frequency Domain full Waveform Inversion for Ultrasound Imaging by Ramirez, Ana B., Abreo, Sergio A., Van Dongen, K.W.A.

“…With full waveform inversion (FWI) all available information enclosed in the recorded wavefield - including multiple scattering, dispersion, and diffraction -…”
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An adaptation of the MWP-CWP model for a GPU architecture applied to 3-D stencil kernels by Parra, Dorfell, Salamanca, William, Ramirez, Ana B.

“…Finding the bottlenecks in the execution of a kernel in a GPU is essential to improve the performance of the implementation. Although there are several…”
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A GPU IMPLEMENTATION OF THE SECOND ORDER ADJOINT STATE THEORY TO QUANTIFY THE UNCERTAINTY ON FWI by Abreo, Sergio-Alberto, Ramírez, Ana-B, Reyes, Oscar-Mauricio

“…ABSTRACT The second order scattering information provided by the Hessian matrix and its inverse plays an important role in both, parametric inversion and…”
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Sparsity constrained born inversion for breast cancer detection by Ramirez, Ana B., van Dongen, Koen W. A.

“…Ultrasound has been successfully used for detecting and characterizing small breast lesions. To improve the image quality, an imaging method known as Born…”
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A GPUimplementation of the second order adjoint state theory to quantify the uncertainty on FWI by Ramirez, Ana B, Reyes, Oscar-Mauricio, Abreo Carrillo, Sergio Alberto

“…The second order scattering information provided by the Hessian matrix and its inverse plays an important role in both, parametric inversion and uncertainty…”
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Reconstruction of Sparse Signals From [Formula Omitted] Dimensionality-Reduced Cauchy Random Projections by Ramirez, Ana B, Arce, Gonzalo R, Otero, Daniel, Paredes, Jose-Luis, Sadler, Brian M

“…Dimension reduction methods via linear random projections are used in numerous applications including data mining, information retrieval and compressive…”
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Reconstruction of Sparse Signals From [ell] 1 Dimensionality-Reduced Cauchy Random Projections by Ramirez, Ana B, Arce, Gonzalo R, Otero, Daniel, Paredes, Jose-Luis, Sadler, Brian M

“…Dimension reduction methods via linear random projections are used in numerous applications including data mining, information retrieval and compressive…”
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Reconstruction of Sparse Signals From ℓ1 Dimensionality-Reduced Cauchy Random Projections by RAMIREZ, Ana B, ARCE, Gonzalo R, OTERO, Daniel, PAREDES, Jose-Luis, SADLER, Brian M

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