Volume Rendering
Mostrando 1-12 de 43 artigos, teses e dissertações.
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1. In Vivo Computed Tomography Direct Volume Rendering of the Anterior Ethmoidal Artery: A Descriptive Anatomical Study
Abstract Introduction The clinical relevance of the anatomy and variations of the anterior ethmoidal artery (AEA) is outstanding, considering its role as a landmark in endoscopic surgery, its importance in the therapy of epistaxis, and the high risks related to iatrogenic injuries. Objective To provide an anatomical description of the course and relation
Int. Arch. Otorhinolaryngol.. Publicado em: 2020-03
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2. Comparison between 3D volumetric rendering and multiplanar slices on the reliability of linear measurements on CBCT images: an in vitro study
OBJECTIVE: The purpose of this study was to determine the accuracy and reliability of two methods of measurements of linear distances (multiplanar 2D and tridimensional reconstruction 3D) obtained from cone-beam computed tomography (CBCT) with different voxel sizes. MATERIAL AND METHODS: Ten dry human mandibles were scanned at voxel sizes of 0.2 and 0.4 mm.
J. Appl. Oral Sci.. Publicado em: 04/07/2014
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3. Feeding restriction impairs milk yield and physicochemical properties rendering it less suitable for sale
Feed shortages are relatively frequent in subtropical pasture-based dairy production systems. The effect of feed restriction on milk yield and physical-chemical traits was evaluated in this study. The experiment was carried out in Brazil's south region. Treatments consisted of control and restricted diet. Six multiparous and six primiparous cows, with 499 ±
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-08
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4. Assessment of open source software for CBCT in detecting additional mental foramina
The purpose of this study was to evaluate which post-processing imaging protocol would be better to analyze the additional mental foramen (AMF) in preoperative planning with cone-beam computed tomography (CBCT) exams, and to test reproducibility of measurements, using open source software (OsiriX). The software was used to detect the cases of AMF from among
Braz. oral res.. Publicado em: 01/03/2013
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5. Determination of the Representative Elementary Volume for the study of sandstones and siltstones by X-Ray microtomography
X-Ray computerized microtomography (µ-CT) besides providing two-dimensional images (2-D) of the transversal sections of the sample, the biggest attraction of the methodology is the rendering of three-dimensional images (3-D), enabling a more real analysis of the porous structure of the rock. However, the reconstruction, visualization and analysis of such 3-
Materials Research. Publicado em: 31/07/2012
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6. ILLUSTRATIVE VOLUME VISUALIZATION FOR UNSTRUCTURED MESHES / VISUALIZACÃO VOLUMÉTRICA ILUSTRATIVA DE MALHAS NÃO ESTRUTURADAS
Técnicas de visualização científica criam imagens na tentativa de revelar estruturas e fenômenos complexos. Técnicas ilustrativas têm sido incorporadas aos sistemas de visualizacão científica para melhorar a expressividade de tais imagens. A visualização de linhas caracteríticas é uma técnica importante para transmitir uma melhor informacão so
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/10/2011
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7. Precisão e acurácia de medidas lineares da mandíbula em imagens 3D obtidas por meio da tomografia computadorizada de feixe cônico / Accuracy and reliability of mandibular linear measurements on 3D CBCT images with different voxel sizes
Objective: The purpose of this study was to determine the accuracy and reliability of mandibular linear measurements obtained from 3-dimensional cone-beam computed tomography (CBCT) scans of dry human mandibles using different voxel sizes. Methods: Ten dry human mandibles were scanned at voxel sizes of 0.2 and 0.4 mm. Craniometric anatomical landmarks were i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/09/2011
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8. Hardware-assisted visibility sorting for unstructured volume rendering
Harvesting the power of modern graphics hardware to solve the complex problem of real-time rendering of large unstructured meshes is a major research goal in the volume visualization community. While, for regular grids, texture-based techniques are well-suited for current GPUs, the steps necessary for rendering unstructured meshes are not so easily mapped to
Publicado em: 2011
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9. Influência da interação entre os parâmetros reológicos de argamassas e a área potencial de contato de substratos na aderência de argamassas de revestimento / Interaction between mortar rheological parameters and surface potential contact area on mortar renderings bond strength
and the shear bond strength of mortar rendering applied to concrete surfaces, this work intended to verify the influence of the interaction between surface potential contact area and mortar renderings¿ rheology on these performance properties. Moreover, this work has the objective to verify the influence of the mortar¿s rheology affected by the air-entrain
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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10. A survey of GPU-Based volume rendering of unstructured grids
A visualização volumétrica de grandes malhas não estruturadas é uma das principais metas da comunidade de visualização científica. Enquanto que em grades regulares o uso de técnicas baseadas em textura são adequadas para as Unidades de Processamento Gráfico (GPUs) atuais, os passos necessários para exibir malhas não estruturas não são diretame
Publicado em: 2010
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11. Visualização da curvatura de objetos implícitos em um sistema extensável. / Curvature visualization of implicit objects in a extensible system.
Neste trabalho, estudaremos a visualização da curvatura de superfícies definidas implicitamente por funções do tipo f:[0,1] [0,1], usando a técnica de lançamento de raios (ray casting). Como em geral conhecemos apenas valores amostrados de f, estudaremos um método de interpolação tricúbica, a fim de calcular as derivadas de segunda ordem precisame
Publicado em: 2010
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12. Contribuição ao estudo da aderência de revestimentos de argamassa e chapiscos em substrato de concreto / Contribution to study of the bond strength of mortar renderings and slurry mortars on concrete substrate
A grande ocorrência de manifestações patológicas em revestimentos de argamassa associadas à falha de aderência a substratos de concreto cada vez mais chama a atenção do meio técnico, pois além de prejuízos às edificações, pode representar risco aos usuários, motivando diversos trabalhos sobre o assunto. Abordando o problema, a presente dissert
Publicado em: 2010