Spring Break Prep Lab

Download the following data, for a region outside the US.  Since we are looking at some 3D features, consider getting a region with significant topography.  This will be a medium scale exercise, with 30 m data, so you want to look at fairly large regions.  You need to insure that you get all the covering some of the same area.

Our next lab, the week after spring break, will be to create a data base using geo-tagged photos.  You will have three choices:

Answer the following questions.  You should have maps to support your answers, and you might want to zoom so that you can see the actual detail in the satellite imagery:

Include the following 3D views with the DEM, with a discussion of how the 3D depictions help understand the region.

  1. Anaglyph
  2.   OpenGL 3D view.  If the icon is not available, set the DEM to use with the image on Modify menu
  3. Perspective views, with

Landsat scene displays.  For each of these you need one or more graphics, and a short discussion.

  1. How are Landsat 8 bands 8, 9, 10, and 11 different from the others?  Discuss the spatial resolution in terms of the wavelength, and the band which is not in an atmospheric window.
  2. How do the first several bands in a Principal components analysis compare to the actual bands?
  3. Do an Unsupervised classification of the image.  How many categories does it create, and can you explain what some of the categories are?
  4. Do a Laplacian of the Gaussian Digital filter.  Is this a smoothing or a sharpening filter? What is it picking up, and is the black or the white more interesting?
  5. Create NDVI and NDWI images.  Do these do a good job of characterizing the terrain?  How many kinds of terrain does it look like there are based on these images?
  6. Get a correlation matrix among the bands, and band scattergrams for two bands with the highest positive correlation, two bands with the highest negative correlation, and two bands with nearly 0 correlation.

New imageOpen all bands as a group by picking the TIF file for any one of them.

Last revision 4/29/2017