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9

ESRI has a pretty good help section on LiDAR (below). For more formal details on LiDAR, I would recommend the following books: Topographic Laser Ranging and Scanning: Principles and Processing Airborne and Terrestrial Laser Scanning Remote Sensing and Image Interpretation LiDAR Laser Returns Laser pulses emitted from a lidar system reflect from ...


2

Just use the ArcGIS raster calculator with a CON statement. CON(("h2005" - "h2015") >= 30, 1, 0) This will result in a binary raster where [1] represents differences of >= 30m and [0] no change at this threshold. And yes, set your analysis environment for extent and snap raster.


2

Give you've got some experience in coding in Python I'd also recommend looking at the scikit-learn which has a large number of methods available for supervised, unsupervised, and semi-supervised classification, as well as regression. If as @Jeffrey-Evans says you're looking to perform binary classification you could look at Support Vector Classification, or ...


2

I have attended training in use of the Semi-Automatic Classification Plugin for QGIS. From what I could see it could be what you are looking for. The whole rig is available for free, so money should not be an issue. Admittedly I am no expert in these tools, but the author says it includes several classification algorithms (Minimum Distance, Maximum ...


2

As mentioned by @nicholaschris, Zhu et al's paper is nice, and they have a tool associated with it. Note that the shift is a function of 1) the position of the sun (doesn't vary on one image), 2) the position (XYZ) of the cloud and 3) the elevation of the ground (2 and 3 do vary). So that a unique shift could not be enough. To answer the question with ...


1

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 ...


1

Use the Layer Stack tool in reverse by using your 11 band stack as the input and selecting only the bands you want in the output. For example, in the attached screenshot I added bands 1, 2, 3 to the stack (omitting band 4).


1

As @user30184 says, gdal is just reading the values of your raster band, but you should be able to know the wavenlenght of each band based on the metadata (information you should get about the data). the two values returned by "ComputeBandStats()" will be the mean and standard deviation of the values in your bands. If the mean value is between zero and ...


1

The picture below from Fernandez-Diaz (2011) might help complementing Aaron's answer. Lidar returns are discrete observations* recorded when a laser pulse is intercepted and reflected by targets. Multiple returns derive from one laser pulse intercepting multiple targets (e.g. a top of a tree, its branches, and the ground). *such as coordinates x, y and z; ...


1

The Cal-Atlas site has 2012 NAIP R,G,B,NIR quarter-quad tiffs available for download. The USDA-APFO provides a REST ArcGIS webmap service which now contains the NIR band. To use this service you will need to add a GIS Server in ArcGIS. 1) Open ArcCatalog and in the Catalog Tree select "GIS Servers" 2) Double click "Add ArcGIS Server" 3) In wizard select ...


1

Not exactly "high-resolution," but the price is right. Esri's World Imagery map service presents satellite imagery for the world and high-resolution imagery for the United States and other areas around the world.


1

I just found a proceeding paper by Maurice Schönert et al. (2014) in which they derive Tasseled Cap Coefficients for the RapidEye sensors. I haven't tested it myself, but it looks promising.


1

Landsat 8 is now being digested by AWS. There is a standard directory structure and the data can be accessed via an http or through the AWS commandline interface. While this not an ftp interface, it will be quite easy to batch download in a scripting language.



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