Boletim de Ciências Geodésicas

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ANALYSIS OF THE TARGET DECOMPOSITION TECHNIQUE ATTRIBUTES AND POLARIMETRIC RATIOS TO DISCRIMINATE LAND USE AND LAND COVER CLASSES OF THE TAPAJÓS REGION

Natalia Cristina Wiederkehr

Fábio Furlan Gama

José Cláudio Mura

João Roberto dos Santos

Polyanna da Conceição Bispo

Edson Eyji Sano

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Abstract: This study aims to analyze the capability of the target decomposition techniques and the polarimetric ratios applied to the ALOS/PALSAR-2 satellite polarimetric images to discriminate the land use and land cover classes in the Tapajós National Forest region,

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DOI: https://doi.org/10.1590/s1982-21702019000100002

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COMPARISON BETWEEN ABSOLUTE AND RELATIVE POSITIONAL ACCURACY ASSESSMENT - A CASE STUDY APPLIED TO DIGITAL ELEVATION MODELS

Leandro Luiz Silva de França

Alex de Lima Teodoro da Penha

João Alberto Batista de Carvalho

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Abstract: This paper presents a comparative study between the absolute and relative methods for altimetric positional accuracy of Digital Elevation Models (DEM). For the theoretical basis of this research, the definitions of accuracy (exactness) and precision, as well

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DOI: https://doi.org/10.1590/s1982-21702019000100003

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CLASS-BASED AFFINITY PROPAGATION FOR HYPERSPECTRAL IMAGE DIMENSIONALITY REDUCTION AND IMPROVEMENT OF MAXIMUM LIKELIHOOD CLASSIFICATION ACCURACY

André Moiane

Alvaro Muriel Lima Machado

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Abstract: This paper investigates an alternative classification method that integrates class-based affinity propagation (CAP) clustering algorithm and maximum likelihood classifier (MLC) with the purpose of overcome the MLC limitations in the classification of high dim

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DOI: https://doi.org/10.1590/s1982-21702019000100004

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STRATEGY FOR EXTRACTION OF FOURSQUARE’S SOCIAL MEDIA GEOGRAPHIC INFORMATION THROUGH DATA MINING

Paula Fernandez Costa

Irving da Silva Badolato

Rogério Luís Ribeiro Borba

Julia Celia Mercedes Strauch

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Abstract: This aim of this paper is the acquisition of geographic data from the Foursquare application, using data mining to perform exploratory and spatial analyses of the distribution of tourist attraction and their density distribution in Rio de Janeiro city. Thus,

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DOI: https://doi.org/10.1590/s1982-21702019000100005

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PHYSICAL CONNECTION BETWEEN BVRF SEGMENTS BASED ON LEVELING ASSOCIATED WITH GRAVIMETRY

Andrea Santacruz Jaramillo

Sílvio Rogério Correa de Freitas

Roberto Teixeira Luz

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Abstract: Considering the efforts to establish Global Reference Systems linked to the geopotential space, new alternatives are sought to address the problems found in the classic national vertical networks. The Brazilian Vertical Reference Frame (BVRF) was materialized

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DOI: https://doi.org/10.1590/s1982-21702019000100006

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