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--- elevacao [2012/05/03 16:07]
laercio
+++ elevacao [2015/11/20 11:03] (current)
laercio
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 === Autoria ===
 Laércio M. Namikawa - laercio@dpi.inpe.br
+<html>
+<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-sa/3.0/88x31.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" href="http://purl.org/dc/dcmitype/Text" property="dct:title" rel="dct:type">Elevation Analysis</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://wiki.dpi.inpe.br/doku.php?id=elevacao&rev=1375816021" property="cc:attributionName" rel="cc:attributionURL">Laercio M. Namikawa</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US">Creative Commons Attribution-ShareAlike 3.0 Unported License</a>.
+</html>
 ----
 Modelos Digitais de Elevação tem sido utilizados para diversas aplicações, mas a experiência tem demonstrado que o uso efetivo destes modelos deve ser melhorado com a consideração de aspectos como o uso de metadados, a verificação da confiabilidade da informação resultante e a influência das diferentes escalas. Portanto, o objetivo da **Análise de Elevação** é incluir o estudo destes aspectos, desenvolvendo pesquisas e algoritmos, de modo a ser um campo de estudo mais completo que a Modelagem Digital de Elevação. \\
 ===== Modelagem Digital de Terreno =====
 [[geopro:MDT|O que é o modelo digital de terreno]]?
+|  Superfíce Contínua  |{{elevacao:dem_surface.png?400}} \\ {{http://i.creativecommons.org/l/by-sa/3.0/80x15.png}}|Download \\ {{elevacao:dem_surface.svg|SVG }} \\ {{elevacao:dem_surface.pdf|PDF}} |
+<html>
+<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">DEM Surface</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://wiki.dpi.inpe.br/doku.php?id=elevacao&rev=1375816021" property="cc:attributionName" rel="cc:attributionURL">Laercio M. Namikawa</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US">Creative Commons Attribution-ShareAlike 3.0 Unported License</a>.
+</html>
+\\
+|  Isolinhas  |{{elevacao:dem_contour.png?400}}\\ {{http://i.creativecommons.org/l/by-sa/3.0/80x15.png}}|Download  \\  {{elevacao:dem_contour.svg|SVG}} \\ {{elevacao:dem_scontour.pdf|PDF}}|
+<html>
+<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">DEM Contour</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://wiki.dpi.inpe.br/doku.php?id=elevacao&rev=1375816021" property="cc:attributionName" rel="cc:attributionURL">Laercio M. Namikawa</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US">Creative Commons Attribution-ShareAlike 3.0 Unported License</a>.
+</html>
+|  Grade Regular  |{{elevacao:dem_grid.png?400}}\\ {{http://i.creativecommons.org/l/by-sa/3.0/80x15.png}}|Download  \\  {{elevacao:dem_grid.svg|SVG}} \\ {{elevacao:dem_grid.pdf|PDF}}|
+<html>
+<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">DEM Grid</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://wiki.dpi.inpe.br/doku.php?id=elevacao&rev=1375816021" property="cc:attributionName" rel="cc:attributionURL">Laercio M. Namikawa</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US">Creative Commons Attribution-ShareAlike 3.0 Unported License</a>.
+</html>
+|  TIN  |{{elevacao:dem_tin.png?400}}\\ {{http://i.creativecommons.org/l/by-sa/3.0/80x15.png}}|Download  \\  {{elevacao:dem_tin.svg|SVG}} \\ {{elevacao:dem_tin.pdf|PDF}}|
+<html>
+<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-sa/3.0/80x15.png" /></a><br /><span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">DEM TIN</span> by <a xmlns:cc="http://creativecommons.org/ns#" href="http://wiki.dpi.inpe.br/doku.php?id=elevacao&rev=1375816021" property="cc:attributionName" rel="cc:attributionURL">Laercio M. Namikawa</a> is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.en_US">Creative Commons Attribution-ShareAlike 3.0 Unported License</a>.
+</html>
+===== Research Topics Ideas =====
+==== MultiResolution Rectangular Grid Model ====
+=== Questions ===
+== Is it better than TIN? ==
+What is better? Less computer demanding - storage and processing.\\
+== Which Data Structure to use? ==
+What is available? Are there any OGC standards?
+== How to define the different resolutions and where they are? ==
+Can we use a variation of VIP algorithm?
 ===== Tópicos da Pesquisa =====
@@ Line 111: / Line 150: @@
 ----
 \\
@@ Line 148: / Line 190: @@
 ----
+=== Federal Geographic Data Committee - Geospatial Positioning Accuracy Standards ===
+== Spatial Accuracy ==
+The NSSDA uses root-mean-square error (RMSE) to estimate positional accuracy. RMSE is the
+square root of the average of the set of squared differences between dataset coordinate values and
+coordinate values from an independent source of higher accuracy for identical points. \\
+Accuracy is reported in ground distances at the 95% confidence level. Accuracy reported at the 95%
+confidence level means that 95% of the positions in the dataset will have an error with respect to true ground position that is equal to or smaller than the reported accuracy value.
+== Accuracy Test Guidelines ==
+The data producer shall determine the geographic extent of testing....Vertical accuracy
+shall be tested by comparing the elevations in the dataset with elevations of the same points as
+determined from an independent source of higher accuracy. \\
+A **minimum of 20 check points** shall be tested, distributed to reflect the geographic area of interest and the distribution of error in the dataset.
+**Vertical Accuracy**
+Let: \\
+RMSEz = sqrt[ SUM(zdata i - zcheck i)^2 /n] \\
+where \\
+z data i is the vertical coordinate of the i th check point in the dataset. \\
+z check i is the vertical coordinate of the i th check point in the independent source of higher accuracy \\
+n = the number of points being checked \\
+i is an integer from 1 to n \\
+It is assumed that systematic errors have been eliminated as best as possible. If vertical error is normally distributed, the factor 1.9600 is applied to compute linear error at the 95% confidence level... Therefore, vertical accuracy, Accuracyz, reported according to the
+NSSDA shall be computed by the following formula: \\
+Accuracyz = 1.9600 *RMSEz.
 \\
@@ Line 184: / Line 250: @@
-==== PG-CAP 2011 ====
+==== PG-CAP 2014 ====
 [[http://wiki.dpi.inpe.br/doku.php?id=cap349/|CAP-349: Bancos de Dados Geográficos]]
@@ Line 269: / Line 337: @@
 JPL-NASA (2003). ASTER: Advanced Spaceborne Thermal Emission and Reflection Radiometer. 2003.
+SRTM DLR X_SAR
+http://www.dlr.de/eoc/en/Portaldata/60/Resources/dokumente/7_sat_miss/srtm_products_en.pdf\\
+http://www.dlr.de/eoc/en/Portaldata/60/Resources/dokumente/7_sat_miss/srtm_daten_download_en.pdf
 === ASTER ===
@@ Line 281: / Line 353: @@
 [[http://lesam.geog.buffalo.edu/staff/namikawa/DraftPapers/GeoComputationPerformanceMeasure.pdf|paper]]
 ----
@@ Line 286: / Line 359: @@
 INSTRUÇÕES REGULADORAS DAS NORMAS TÉCNICAS DA CARTOGRAFIA NACIONAL. Diário Oficial da União, Decreto
 número 89817 de 20 de junho, 1984.
+Federal Geographic Data Committee FGDC. 1998. “Geospatial positioning accuracy standards, Part 3. National standard for spatial data accuracy.” FGDC-STD-007, Reston, Va
 ----
-==== Dados Disponíveis ====
+==== Worldwide Data Availability - Dados Disponíveis DEM Globais ====
 === SRTM ===
 Topographic data acquired during the Shuttle Radar Topography Mission (SRTM), in February 2000, flew onboard Space Shuttle Endeavour. The SRTM radar contained two types of antenna panels, C-band and X-band. C-band data processed at the Jet Propulsion Laboratory and X-band processed and distributed by DLR. (JPL-NASA, 2002)
+== Download ==
+Research Data\\
+http://dds.cr.usgs.gov/srtm/version2_1/
 **Accuracy**
@@ Line 305: / Line 384: @@
   * vertical accuracy (absolute):  ±16m 90% vertical error
   * vertical accuracy (relative):  ±6m 90% vertical error
+== Download ==
+http://eoweb.dlr.de
 === ASTER ===
@@ Line 316: / Line 397: @@
   *  One study at a site in British Columbia(Canada) showed errors of 28 meters for 68% level of confidence and 51 meters for the 90 % level of confidence, with errors ranging from -151 to 167 meters, after eliminating mismatched areas and correcting lakes. (Toutin 2002)
+== Download ==
+http://gdem.ersdac.jspacesystems.or.jp/
 ----
+=== How-To ===
+[[SRTM_no_SPRING:Como importar dados SRTM para o SPRING]].
@@ Line 325: / Line 411: @@
 [[:elevacao:ingles2portugues|Tradução de termos do Inglês para o Português]]
+===== Aplicações =====
+[[:elevacao:aplichand|Aplicações do HAND (Distância Vertical à Drenagem Mais Próxima)]]

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