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A aula inaugural do curso de geometria aplicada às artes no conservatório imperial de artes e ofícios
Polidori, Laurent
; Tommaselli, Antonio Maria Garcia [Artigo]
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Extraction of building roof planes with stratified random sample consensus
Carrilho, André C.; Galo, Mauricio (Photogrammetric Record, 2018) [Artigo]
This paper describes a consensus-set estimation for building roof-plane detection using a stratified random sample consensus (sRANSAC) algorithm applied to point clouds acquired by laser scanning systems. The main idea is ... -
Radargrammetric approaches to the flat relief of the amazon coast using COSMO-SkyMed and TerraSAR-X datasets
Guimarães, Ulisses Silva; ; Galo, Maria de Lourdes Bueno Trindade ; ; Camargo, Paulo de Oliveira (ISPRS Journal of Photogrammetry and Remote Sensing, 2018) [Artigo]
The Amazonian coast consists of extensive flood plains and plateaus characterized by a high discharge of water and sediment from the Amazon River. This wide landscape occurs under a tropical climate with heavy rains and ... -
Geometric model and assessment of a dual-fisheye imaging system
Campos, Mariana Batista; Tommaselli, Antonio Maria Garcia ; ; (Photogrammetric Record, 2018) [Artigo]
This paper presents a technique for the calibration of a 360° dual imaging system (Ricoh Theta S) composed of two cameras with fisheye lenses specially mounted in a common structure. The experiments are based on calibration ... -
A backpack-mounted omnidirectional camera with off-the-shelf navigation sensors for mobile terrestrial mapping: Development and forest application
Campos, Mariana Batista; Tommaselli, Antonio Maria Garcia ; ; Prol, Fabricio dos Santos ; ; ; (Sensors (Switzerland), 2018) [Artigo]
The use of Personal Mobile Terrestrial System (PMTS) has increased considerably for mobile mapping applications because these systems offer dynamic data acquisition with ground perspective in places where the use of wheeled ... -
Spatial and Temporal Features of the Topside Ionospheric Electron Density by a New Model Based On GPS Radio Occultation Data
Prol, Fabricio dos Santos; ; Camargo, Paulo de Oliveira ; (Journal of Geophysical Research: Space Physics, 2018) [Artigo]
A new method for probing the spatial and temporal features of the topside ionosphere is presented. The Vary-Chap model given by linear functions was used to discover and report features of the topside scale height and its ... -
Assessment of a TEC calibration procedure by single-frequency PPP
Prol, Fabricio dos Santos; Camargo, Paulo de Oliveira ; Monico, João Francisco Galera ; (GPS Solutions, 2018) [Artigo]
Global navigation satellite system (GNSS) measurements have become an outstanding data source for ionospheric studies using total electron content (TEC) estimation procedures. Many methods for TEC estimation had been ... -
S4index: Does it only measure ionospheric scintillation?
de Oliveira Nascimento Brassarote, Gabriela; ; Monico, João Francisco Galera (GPS Solutions, 2018) [Artigo]
The study of ionospheric scintillation has played a critical role in ionospheric research and also in satellite positioning. This is due to the growing influence of GNSS in navigation and remote sensing activities and also ... -
Review of tomographic reconstruction methods of the ionosphere using GNSS
Prol, Fabricio dos Santos; Camargo, Paulo de Oliveira (Revista Brasileira de Geofisica, 2015) [Resenha]
Spatial and temporal variation of the electron density in the atmosphere makes the ionosphere a difficult region to model. A major difficulty arises due to the incomplete geometrical coverage of the Global Navigation ... -
Preferência por mapas em diferentes escalas para sistema de navegação e guia de rota em automóvel
; Decanini, Mônica Modesta Santos; Pugliesi, Edmur Azevedo ; Tachibana, Vilma Mayumi ; De Oliveira, Renan Furlan ; Soares, Jader Mozella Marton (Boletim de Ciencias Geodesicas, 2016) [Artigo]
Usability issues of maps presented in-car Route Guidance and Navigation System (RGNS) may result in serious impacts on traffic safety. To obtain effective RGNS, evaluation of ‘user satisfaction’ with the system has played ... -
Ionospheric tomography using GNSS: multiplicative algebraic reconstruction technique applied to the area of Brazil
Prol, Fabricio dos Santos; Camargo, Paulo de Oliveira (GPS Solutions, 2016) [Artigo]
Experimental analysis was performed using multiplicative algebraic reconstruction technique (MART) to map the ionosphere over Brazil. Code and phase observations from the global navigation satellite system (GNSS) together ... -
Avaliação experimental de técnicas de calibração de câmaras com objetiva olho de peixe
; de Moraes, Marcus Vinícius Antunes; Tommaselli, Antonio Maria Garcia (Boletim de Ciencias Geodesicas, 2015) [Artigo]
Fisheye lens cameras enable to increase the Field of View (FOV), and consequently they have been largely used in several applications like robotics. The use of this type of cameras in close-range Photogrammetry for high ... -
Uso de sombras na correção do efeito vinhete
Imai, Nilton Nobuhiro; ; Tommaselli, Antonio Maria Garcia ; Barros, Anderson De Freitas (Boletim de Ciencias Geodesicas, 2014) [Artigo]
When registering spectral radiance from surface targets, digital numbers recorded by the imagery sensor may vary. Such variation causes imperfections on the images coming from aerial surveys. Variation in the image brightness ... -
Urban road classification in geometrically integrated high-resolution RGB aerial and laser-derived images using the artificial neural network classification method
(International Journal of Image and Data Fusion, 2018) [Artigo]The problem of automated urban road network extraction is extremely complex because roads in urban scenes strongly interact with other objects. This problem can be simplified if road regions are first isolated using a ... -
Development and Assessment of a Data Set[-2pt] Containing Frame Images and Dense Airborne Laser Scanning Point Clouds
(IEEE Geoscience and Remote Sensing Letters, 2017) [Artigo]This letter describes the main features of a data set that contains aerial images acquired with a medium format digital camera and point clouds collected using an airborne laser scanning unit, as well as ground control ... -
Analyzing the feasibility of a space-borne sensor (SPOT-6) to estimate the height of submerged aquatic vegetation (SAV) in inland waters
Rotta, Luiz Henrique S.; ; Watanabe, Fernanda S.Y. ; Rodrigues, Thanan W.P ; Alcântara, Enner H. ; Imai, Nilton N. (ISPRS Journal of Photogrammetry and Remote Sensing, 2018) [Artigo]
Remote sensing based approaches have been widely used over the years to monitor and manage submerged aquatic vegetation (SAV) or aquatic macrophytes mainly by mapping their spatial distribution and at the most, modeling ... -
Diffuse attenuation coefficient retrieval in CDOM dominated inland water with high chlorophyll-a concentrations
Gomes, Ana Carolina Campos; Bernardo, Nariane ; do Carmo, Alisson Coelho ; ; Alcântara, Enner (Remote Sensing, 2018) [Artigo]
The kd(490) is a vertical light attenuation coefficient and an important parameter for water quality. The kd estimates are often based on empirical and semi-analytical algorithms, designed for oceanic and coastal waters. ... -
Driver preference concerning in-car route guidance and navigation system maps for drivers with color vision deficiency
de Oliveira, Renan Furlan; Pugliesi, Edmur Azevedo ; ; Decanini, Mônica Modesta Santos (Boletim de Ciencias Geodesicas, 2018) [Artigo]
In-car Route Guidance and Navigation Systems (RGNS) are used to help drivers navigate. These maps have mainly been designed to accommodate drivers with normal color vision. However, the color perception of people with ... -
Measuring photogrammetric control targets in low contrast images
Tommaselli, Antonio Maria Garcia; Berveglieri, Adilson (Boletim de Ciencias Geodesicas, 2018) [Artigo]
This paper presents an experimental assessment of photogrammetric targets and subpixel location techniques to be used with low contrast images such as images acquired by hyperspectral frame cameras. Eight different target ... -
Analysis of the 2012-2016 drought in the northeast Brazil and its impacts on the Sobradinho water reservoir
De Azevedo, Samara Calçado; Cardim, Guilherme Pina ; ; ; Da Silva, Erivaldo Antonio (Remote Sensing Letters, 2018) [Artigo]
The northeast region of Brazil (NEB) suffers with the worst drought during 2012–2016 that has greatly affected water availability in general, in particular the hydropower reservoirs. We have analyzed a large dataset of ...