Median Filter
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Dried blood spot testing for the antenatal screening of HTLV, HIV, syphilis, toxoplasmosis and hepatitis B and C: prevalence, accuracy and operational aspects
Introduction:Screening for vertically transmitted infection is mandatory and must be conducted at the first prenatal consultation. The most vulnerable women's groups are those at the lowest socio-economic level. Dried blood spot testing on filter paper could represent a secure way to screen pregnant women in the prenatal period.Methods:A cross-sectional stud
Braz J Infect Dis. Publicado em: 2014-12
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2. Desenvolvimento de ferramenta de comparação de técnicas de processamento de sinais para determinar fadiga muscular por meio do sinal emg / Toolkit development for signals processing technics comparison to detect muscular fadigue by EMG signal
This study aimed to development of a computational tool for electromyographic signal (EMG) analysis by signal processing techniques to determine muscular fatigue. With Ethics Committee of Federal University of Goiás approve were recorded from the dominant biceps brachii of 10 volunteers, that did not ever had muscular disease. The protocol consisted on get
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/07/2012
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3. Medida da resistência das vias aéreas pela técnica do interruptor em crianças nascidas prematuramente
OBJECTIVE : To evaluate the airway resistance by interrupter technique (Rint) in preschool children born prematurely. STUDY DESIGN : Cross-sectional study of cohort premature infants born between (2004-2005). Data collection was conducted from November 2008 and May 2010. Anthropometric measurements were performed on the test day. The Rint was measured with t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
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4. Interpretação sísmica e análise de atributos - área do levantamento sísmico 3D de siririzinho (Bacia Sergipe-Alagoas, NE do Brasil)
A presente dissertação tem como objetivo principal a interpretação sísmica e análise de atributos sísmicos do alto de Sirizinho, localizado na Sub-bacia de Sergipe (porção sul da Bacia Sergipe-Alagoas). Tal estudo possibilitou um melhor entendimento da estratigrafia e estruturação que o alto experimentou durante o seu desenvolvimento. Em uma prime
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/08/2011
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5. Object tracking from compressed video using Kalman Filter and a novel spatiotemporal motion-vector filter.
Video Object Tracking plays a crucial role on several Computer Vision applications, such as Video Surveillance, Intelligent Transportation System (ITS), Human Machine Interface (HMI), Video Indexing and Shopping Behavior Analysis. Nevertheless, the processing power demanded by object tracking techniques still consists in a bottleneck to their wider adoption.
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/10/2010
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6. Object tracking from compressed video using Kalman Filter and a novel spatiotemporal motion-vector filter.
Video Object Tracking plays a crucial role on several Computer Vision applications, such as Video Surveillance, Intelligent Transportation System (ITS), Human Machine Interface (HMI), Video Indexing and Shopping Behavior Analysis. Nevertheless, the processing power demanded by object tracking techniques still consists in a bottleneck to their wider adoption.
Publicado em: 2010
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7. Geração e avaliação de produtos híbridos CBERS-2B para a identificação de fragmentos de vegetação arbórea / Generation and evaluation of CBERS-2B hybrid products for the identification of arboreal vegetation fragments
This study aims to evaluate two hybrid CBERS-2B products of 2.5 m and 10 m spatial resolution, for mapping forest fragments at Ibitinga Sao Paulo state, Brazil. In order to reduce the blurring effect in CBERS-2B images, the restoration methods Modified Inverse Filtering, Richardson-Lucy, Modified Richardson-Lucy and ones based on POCS theory and neural netwo
Publicado em: 2010
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8. Evaluation of the electromyographic signal and the histomorphometry of vastus lateralis muscle in different electrodes placement, intensities of contraction and genders / Avaliação do sinal eletromiografico e da histomorfometria do musculo vasto lateral em diferentes posicionamentos de eletrodos, intensidades de contração e generos
It has been shown that electromyography signal (EMGs) and histomorphometry are different along the muscle belly and between genders, although the relationship between these parameters is not clear. The aim of this study was to evaluate the EMGs in different intensities of volunteer isometric muscle contraction (10-100%) and electrodes positions over the bell
Publicado em: 2010
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9. Filtro difusão-mediana com determinação automática dos parâmetros com aplicações em sinais de ECG e sensor piezoelétrico. / Diffusion-median filter with automatic determination of parameters with applications in ECG signals and piezoelectric sensor.
O objetivo deste trabalho é filtrar sinais corrompidos por ruído Gaussiano ou impulsivo, preservando a amplitude e a morfologia do sinal original. Normalmente, um filtro linear é utilizado nesta tarefa, porém este filtro altera significativamente as amplitudes e as bordas dos sinais, bem como insere atrasos no sinal. Mostra-se neste trabalho que a difus�
Publicado em: 2009
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10. TOXICIDADE DO EXTRATO DE Derris amazonica KILLIP A ADULTOS DE Cerotoma arcuatus OLIVIER, 1791 (COLEOPTERA: CHRYSOMELIDAE)
The abundance and recognized insecticidal activity of Derris amazonica in addition to the need of controlling Cerotoma arcuatus led to the present study, whose objective was to assess the toxicity of the extract of D. amazonica to adults of C. arcuatus. The concentration-response bioassays were carried out using three distends methodologies Ingestion of trea
Publicado em: 2007
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11. HEURÍSTICAS PARA O PROBLEMA DAS P-MEDIANAS CONECTADAS / HEURISTICS FOR THE CONNECTED P-MEDIAN PROBLEM
In this work, the connected p-median and the connected facility location problems are defined. Applications arise in regional planning, design of telecommunications and transportation networks. For the first problem, two integer linear programming formulations are proposed. Adaptations are made in one of these formulations and are used to model the second pr
Publicado em: 2006
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12. P-Band radar data classification by neural network for Amazonin land cover assessment / Uso de rede neural artificial não supervisionada na classificação de dados de radar na Banda-P para mapeamento de cobertura da terra em floresta tropical
The applicability of P-band radar data for land cover mapping using the unsupervised artificial neural network Fuzzy-ART (Adaptive Resonance Theory) is evaluated. The study area is located near Tapajós National Forest in the State of Para, Brazil. The radar data was acquired during an airborne mission conducted by AeroSensing RadarSystem GmbH in september 2
Publicado em: 2003