Hot answers tagged remote-sensing
Here is a short list of some sources I've used in the past: LANDSAT5 (30m) RapidEye (5m) SPOT5 (2.5m) <- Probably the most economical option for you GeoEye (~0.5m) There's an overview of the different types here: http://www.geoimage.com.au/satellites/satellite-overview If you're looking for acquisition, there are quite a few providers around who can ...
ATCOR for Erdas Imagine will convert DN to true reflectance--this step is critical for change detection analyses. Then you can use DeltaCue add-on in Erdas Imagine to detect land cover change. More details on the DeltaCue add-on can be found here. Additionally, there is a fairly good instructional video on how to use DeltaCue to get you started. I would ...
Keep an eye on Tomnod, a crowd-sourced imagery review organization utilizing DigitalGlobe satellite imagery. They may be able assist.
I would recommend Landsat or MODIS for this task. You can access Landsat or MODIS data through Earth Explorer or Reverb|Echo. There are a number of publications on the subject to help you along the way: Brekke, C., & Solberg, A. H. (2005). Oil spill detection by satellite remote sensing. Remote sensing of environment, 95(1), 1-13. Hu, C., Li, X., ...
Just a tiny error, as far as I can see. Your substrings are incorrect. This can be seen by comparing the result from a 'which(df$bits="0000100001000100")' with a number of observed unique values, which can be seen in ArcGIS when colouring the tif-file by unique values. 00001000 01000100 = 2116, and there are 3891233 of that number in both ArcGIS and R. This ...
You need to select the "Show All" box in the Index Options GUI.
The USGS phenology project might inspire you a little. http://phenology.cr.usgs.gov/other_resources.php
Lars Eklundh: It is possible to monitor one or several classes in TIMESAT. The option to use several classes is mainly necessary if the phenological structure is very different between the classes, i.e. different parameter settings are necessary for the different classes. In your case it might be possible to use the same settings for both classes, but ...
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