Search Results - "Castro Martins, Thiago"

A study on GPU acceleration applied to 2D irregular packing problems by Sato, André Kubagawa, Castro Martins, Thiago, Tsuzuki, Marcos Sales Guerra

“…Irregular packing problems are an important subject of study in C&P problems. An efficient solution can have a great economic and environmental impact. The…”
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Influence of current injection pattern and electric potential measurement strategies in electrical impedance tomography by Luppi Silva, Olavo, Gonzalez Lima, Raul, Castro Martins, Thiago, Silva de Moura, Fernando, Seiji Tavares, Renato, Sales Guerra Tsuzuki, Marcos

“…Electrical Impedance Tomography (EIT) is a non-invasive image reconstruction technique, whereby current is injected by electrodes and electric potential is…”
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A review of electrical impedance tomography in lung applications: Theory and algorithms for absolute images by Martins, Thiago de Castro, Sato, André Kubagawa, Moura, Fernando Silva de, Camargo, Erick Dario León Bueno de, Silva, Olavo Luppi, Santos, Talles Batista Rattis, Zhao, Zhanqi, Möeller, Knut, Amato, Marcelo Brito Passos, Mueller, Jennifer L., Lima, Raul Gonzalez, Tsuzuki, Marcos de Sales Guerra

“…Electrical Impedance Tomography (EIT) is under fast development. The present paper is a review of some procedures that have contributed to improve spatial…”
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Image Reconstruction Using Interval Simulated Annealing in Electrical Impedance Tomography by Martins, Thiago de Castro, de Camargo, Erick Dario León Bueno, Lima, Raul Gonzalez, Amato, Marcelo Britto Passos, Tsuzuki, Marcos de Sales Guerra

“…Electrical impedance tomography (EIT) is an imaging technique that attempts to reconstruct the impedance distribution inside an object from the impedance…”
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Image reconstruction by electrical impedance tomography using multi-objective simulated annealing by de Castro Martins, Thiago, Vieira Fernandes, Amanda, de Sales Guerra Tsuzuki, Marcos

“…Electrical Impedance Tomography (EIT) image reconstruction can be approached as an optimization problem, intending to minimize the Euclidean distance between…”
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Propagation-based marching cubes algorithm using open boundary loop by Tsuzuki, Marcos de Sales Guerra, Sato, André Kubagawa, Ueda, Edson Kenji, Martins, Thiago de Castro, Takimoto, Rogério Yugo, Iwao, Yuma, Abe, Leonardo Ishida, Gotoh, Toshiyuki, Kagei, Seiichiro

“…The marching cubes (MC) algorithm is employed to generated triangular meshes for visualizing medical images, sculpture scans and mathematical surfaces. It…”
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EIT image regularization by a new Multi-Objective Simulated Annealing algorithm by Martins, Thiago Castro, Sales Guerra Tsuzuki, Marcos

“…Multi-Objective Optimization can be used to produce regularized Electrical Impedance Tomography (EIT) images where the weight of the regularization term is not…”
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A separation and compaction algorithm for the two-open dimension nesting problem using penetration-fit raster and obstruction map by Sato, André Kubagawa, Mundim, Leandro Resende, Martins, Thiago Castro, Tsuzuki, Marcos Sales Guerra

“…Nesting Problems, which are important subjects in the cutting and packing field, involve convex and nonconvex polygons and are common in several industries…”
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Raster penetration map applied to the irregular packing problem by Sato, André Kubagawa, Martins, Thiago Castro, Gomes, Antonio Miguel, Tsuzuki, Marcos Sales Guerra

“…•The raster penetration map determines the local optimum with minimum penetration.•The results using benchmark data sets from the literature showed to be very…”
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GPU implementation of an incomplete Cholesky conjugate gradient solver for a FEM-generated system using full kernel consolidation by Sato, André Kubagawa, Martins, Thiago Castro, Tsuzuki, Marcos Sales Guerra

“…The finite element method (FEM) is a widely used technique to solve partial differential equations and can thus be applied to describe different physical…”
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GPU acceleration of absolute EIT image reconstruction using simulated annealing by Tavares, Renato Seiji, Sato, André Kubagawa, Martins, Thiago Castro, Lima, Raul Gonzalez, Tsuzuki, Marcos Sales Guerra

“…•A new sparse matrix representation to support the conjugated gradients is proposed.•The inverse problem is solved by a hybrid processing using CPU and…”
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An algorithm for the strip packing problem using collision free region and exact fitting placement by Sato, André Kubagawa, Martins, Thiago Castro, Tsuzuki, Marcos Sales Guerra

“…The irregular shape packing problem is approached. The container has a fixed width and an open dimension to be minimized. The proposed algorithm constructively…”
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A Fully Attention-Based Information Retriever by Correia, Alvaro Henrique Chaim, Silva, Jorge Luiz Moreira, Martins, Thiago de Castro, Cozman, Fabio Gagliardi

“…A. H. C. Correia, J. L. M. Silva, T. d. C. Martins and F. G. Cozman, "A Fully Attention-Based Information Retriever," 2018 International Joint Conference on…”
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Electrical impedance tomography reconstruction through simulated annealing with multi-stage partially evaluated objective functions by de Castro Martins, Thiago, de Sales Guerra Tsuzuki, Marcos

“…The EIT reconstruction problem can be solved as an optimization problem using Simulated Annealing. Different objective functions have already been used:…”
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Collision free region determination by modified polygonal Boolean operations by Sato, André Kubagawa, Martins, Thiago Castro, Tsuzuki, Marcos Sales Guerra

“…Cutting and packing problems are found in numerous industries such as garment, wood and shipbuilding. The collision free region concept is presented, as it…”
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Electrical impedance tomography reconstruction through Simulated Annealing with incomplete evaluation of the objective function by de Castro Martins, T., de Camargo, E. D. L. B., Lima, R. G., Amato, M. B. P., de Sales Guerra Tsuzuki, M.

“…The EIT reconstruction problem is approached as an optimization problem where the difference between a simulated impedance domain and the observed one is…”
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3D reconstruction and multiple point cloud registration using a low precision RGB-D sensor by Takimoto, Rogério Yugo, Tsuzuki, Marcos de Sales Guerra, Vogelaar, Renato, Martins, Thiago de Castro, Sato, André Kubagawa, Iwao, Yuma, Gotoh, Toshiyuki, Kagei, Seiichiro

“…A 3D reconstruction method using feature points is presented and the parameters used to improve the reconstruction are discussed. The precision of the 3D…”
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Parallel layout construction algorithm for irregular shape packing problems by Sato, A. K., de Castro Martins, T., de Sales Guerra Tsuzuki, M.

“…Cutting and packing problems arise in a variety of industries, including garment, wood and shipbuilding. Irregular shape packing is a special case which admits…”
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A pairwise exact placement algorithm for the irregular nesting problem by Sato, André Kubagawa, Martins, Thiago de Castro, Tsuzuki, Marcos de Sales Guerra

“…The irregular nesting problem, a subset of cutting and packing problems, aims to minimise waste or unoccupied space inside a container and is found in wood,…”
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Matrix-vector multiplication and triangular linear solver using GPGPU for symmetric positive definite matrices derived from elliptic equations by de Castro Martins, T., de Miranda Kian, J., Kubagawa Sato, Andre, de Sales Guerra Tsuzuki, M.

“…The modern GPUs are well suited for intensive computational tasks and massive parallel computation. Sparse matrix multiplication and linear triangular solver…”
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