@InCollection{CarvalhoMald:2004:InImCh,
author = "Carvalho, Vitor Celso de and Maldonado, Francisco D. and
martinelli, Mariana",
title = "Innovations and improvements of change detection techniques of the
vegetation cover in semi-arid regions",
booktitle = "Aplica{\c{c}}{\~o}es de geotecnologias na engenharia
florestal.",
publisher = "Copiadora Gabardo",
year = "2004",
editor = "Santos, Jo{\~a}o Roberto dos and Disperati, Attilio Antonio",
pages = "61--69",
address = "Curitiba",
note = "{Comiss{\~a}o Organizadora do VI Semin{\'a}rio de
Atualiza{\c{c}}{\~a}o em SensoriamentoRemoto e Sistemas de
Informa{\c{c}}{\~o}es Geogr{\'a}ficas Aplicados {\`a}
Engenharia Florestal.}",
keywords = "principal components, controlled rotation, change detection,
geotecnologias, componentes principais, engenharia florestal.",
abstract = "En este trabajo, se presentan algunas soluciones simples para Ias
principales dificultades que enfrentan los usuarios de
t{\'e}cnicas digitales de detecci{\'o}n de cambios. Aunque estas
soluciones tienen aplicaci{\'o}ri general, se hace {\'e}nfasis
en Ia cobertura vegetal dei semi{\'a}rido. Los pasos
metodol{\'o}gicos mejorados en este trabajo est{\'a}n
relacionados con; selecci{\'o}n de una banda espectral adecuada
para cada fin, una nueva t{\'e}cnica de detecci{\'o}n de cambios
y transfonnaci{\'o}n de Ia imagen detecci{\'o}n de cambios para
obtener el mapa tem{\'a}tico, a trav{\'e}s dei seccionado y
rotulado. Cada uno de estos pasos son mejorados
modific{\^a}ndolos e introduci{\'e}ndoles alguna innovaci{\'o}n
t{\'e}cnica. Una evaluaci{\'o}n de Ia situaci{\'o}n actual
indica que en el mismo ambiente t{\'e}cnicas diferentes producen
resultados diferentes. Estas diferencias son producidas por Ias
dificultades encontradas para compatibilizar radiometricamente los
datos adquiridos en fechas diferentes. Se obtuvo el mapa de
detecci{\'o}n de cambios con buena exactitud y con buena
correspondencia en Ia detecci{\'o}n de formas y patrones de uso.
La rotaci{\'o}n controlada permite eficiencia sin complicados
preprocesamientos (calibraciones radiom{\'e}tricas y correcciones
atmosf{\'e}ricas), perm{\'{\i}}tiendo utilizar en forma
accesible im{\'a}genes obtenidas con diferentes sensores, siempre
que sean conipatibilizadas sus resoluci{\'o}n espacial. -->
ABSTRACT: In this work some simple solutions for the main
difficulties are presentedIdisplayed that face the users of
digital tecl{\'{\i}}niques of detection of changes. Although
these solutions have general application, {\'{\i}}n
th{\'{\i}}s work becomes emphasis in the vegetal cover of the
region of the serni-arid one. The methodologic improvements were
done in the selection of an suitable spectral band for each aim,
creating a new tecl{\'{\i}}nique of detection of changes and
{\'{\i}}mproving the sectioned one and labeled of the image
detect{\'{\i}}on of changes for its transformation in thematic
map. Each one of these steps is iniproved modifying them or
introducing some technical innovation to them. When one evaluates
the present conditions of the tecl{\'{\i}}niques, it is observed
that in the same landscape different tecim{\'{\i}}cal they
produce d{\'{\i}}ff{\`e}rent results. These
d{\'{\i}}fferences are produced by the difficulties
radiometrica{\'{\i}}ly to make compatible the data collected in
different dates. The map of detection of changes with good
exactitude and good correspondence in the detection of forms and
patterns of use was obtained. The controlled rotation allows
effic{\'{\i}}ency w{\'{\i}}thout cornpl{\'{\i}}cated
pre-processings (radiornetric calibrations and atmospheric
corrections), allowing to use in aecessible form images obtained
with different sensors, whenever their space resolutions are made
compatible.",
affiliation = "Centro de fotogrametr{\'{\i}}a y cartograf{\'{\i}}a,
Universidad Nacional de San Juan - UNSJ, Argentina. and {Instituto
Nacional de Pesquisas Espaciais}",
copyholder = "SID/SCD",
isbn = "85-904724-1-8",
language = "en",
targetfile = "CARVALHO, Inovations and.pdf",
urlaccessdate = "05 jun. 2024"
}