%0 Conference Proceedings
%4 sid.inpe.br/marte2/2017/10.27.12.35.46
%2 sid.inpe.br/marte2/2017/10.27.12.35.47
%@isbn 978-85-17-00088-1
%F 59534
%T Análise de diferentes metodologias para o cálculo de área em superfície modelada
%D 2017
%A Lousada, Gabriel,
%A Laeta, Tainá,
%A Fernandes, Manoel do Couto,
%@electronicmailaddress gabriel.lousada@gmail.com
%E Gherardi, Douglas Francisco Marcolino,
%E Aragão, Luiz Eduardo Oliveira e Cruz de,
%B Simpósio Brasileiro de Sensoriamento Remoto, 18 (SBSR)
%C Santos
%8 28-31 maio 2017
%I Instituto Nacional de Pesquisas Espaciais (INPE)
%J São José dos Campos
%P 2176-2183
%S Anais
%1 Instituto Nacional de Pesquisas Espaciais (INPE)
%X Area calculation is one of the most common operations carried out while working with maps; however, when this calculation is performed, very often the influence of relief is ignored during the process. This can lead to large errors of analysis, especially in regions with steep relief. This study aimed to evaluate three different methods currently available for area calculation considering the relief roughness (Modeled Surface) through the use of Digital Elevation Models (DEM) in GRID format. The methodologies evaluated were: Add Surface Information, tool present in ArcGIS software; DEM Surface Tools, proposed by Jenness (2004); and area calculation using the cosine of slope angle. An evaluation of these methodologies was made using two types of tests. One of them consisted in the comparison of the values of a test area with values obtained from a DEM in TIN format, due to its greater adjustability to the relief, which allows the area calculation to be more accurate. The second evaluation was performed using a DEM that simulates geometric solids (cone and semisphere) with area values that can be calculated mathematically and to serve as a reference for evaluation of methodologies. The tests indicated that Add Surface Information tool had the closest results to the reference values used, with a small superiority (0.1%) over the second best tool, the DEM Surface Tools. On the other hand, the calculation according to the cosine of the slope angle showed the worst results, with an average of 2.56% below the reference values used.
%9 Mapeamento
%@language pt
%3 59534.pdf