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Improving synthetic aperture image by image compounding in beamforming process
(2011-11-10)
In this work, signal processing techniques are used to improve the quality of image based on multi-element synthetic aperture techniques. Using several apodization functions to obtain different side lobes distribution, a ...
Spatial image compounding applied to a phase coherence corrected UT-PA technique for inspecting nuclear components of coarse-grained structure
(The American Institute of Physics, 2016-02)
The aim of this work is to obtain a C-Scan view of an austenitic stainless steel weld from a nuclear use pipe. In order to obtain this result Sectorial Scans (S-Scan) from both sides of the weld are obtained by Ultrasonic ...
Improving synthetic aperture image by image compounding in beamforming process
(2011-11-10)
In this work, signal processing techniques are used to improve the quality of image based on multi-element synthetic aperture techniques. Using several apodization functions to obtain different side lobes distribution, a ...
Fast two-photon neuronal imaging and control using a spatial light modulator and ruthenium compounds
(SPIE - the international society for optics and photonics, 2010-03)
We have developed a spatial light modulator (SLM) based microscope that uses diffraction to shape the incoming two-photon laser source to any arbitrary light pattern. This allows the simultaneous imaging or photostimulation ...
Mejora en la calidad de imágenes ultrasónicas aplicando métodos de composición especial y empleando sistemas de Phased ArrayImprovement in the quality of ultrasonic images by applying spatial composition methods and using phased array systems
(Universidade Federal do Rio de Janeiro, 2018-07)
La técnica de ultrasonidos de Phased Array (PA) se ha convertido en una herramienta para la Evaluación No Destructiva (END) por imágenes muy utilizada en el sector industrial. La técnica PA permite realizar deflexiones y ...
Damage Characterization Using Guided-Wave Linear Arrays and Image Compounding Techniques
(Institute of Electrical and Electronics Engineers (IEEE), 2010-09-01)
In this work, a high-resolution imaging method for the inspection of isotropic plate-like structures using linear arrays and Lamb waves is proposed. The evaluation of these components is limited by the low dynamic range ...
Damage Characterization Using Guided-Wave Linear Arrays and Image Compounding Techniques
(Institute of Electrical and Electronics Engineers (IEEE), 2010-09-01)
In this work, a high-resolution imaging method for the inspection of isotropic plate-like structures using linear arrays and Lamb waves is proposed. The evaluation of these components is limited by the low dynamic range ...
Bayesian-based beamformer with wiener post-filter for adaptative processing of ultrasond image using coherent plane wave compounding
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Elétrica e Informática IndustrialUTFPR, 2018-12-07)
Conventional Ultrasound (US) scanners still implement the non-adaptive Delay and Sum (DAS) technique due to easy implementation and low processing time, but it provides low resolution and image contrast. Adaptive techniques ...
NIR hyperspectral image and MCR-ALS applied in the study of chemical compounds spatial distribution in biodegradable active filmsImagens hiperespectrais NIR e MCR-ALS aplicados no estudo da distribuição espacial de compostos químicos em filmes ativos biodegradáveis
(Universidade Federal de Viçosa, 2020)