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Author Archives: pel2
Usually hillshades from a DEM are visualized from the northwest. Here I tried it both from 315 degrees (NW) and due south, 180 degrees. The results are very different. The topography of the lake appears inverted with the azimuth of … Continue reading
The top map has an overlay of Landsat 8 imagery from April 13, 2016, which was downloaded from the Landsat Look viewer. It used the percent clip enhancement that eliminates the lightest and darkest areas and modifies the colors. Landsat … Continue reading
This video from Oregon State University is one of the best explanations of how to interpret remotely sensed imagery. It talks mostly about aerial photos, but it applies to other kinds of imagery, too. Following are notes on infrared imagery. … Continue reading
We visited the sites on Monday, 8/27. It was a very, very hot and humid day! This year I added Pearl Springs instead of the Ralph Brock seedling orchard and golf course. It’s good to switch from time to time.
Presentation for the Penn State Mont Alto Offered Student Reception, April 7, 2018 Foresters spend a lot of time in the field studying forest conditions and carrying out management activities from tree planting to timber harvesting. It is also important … Continue reading
This map shows contour lines generated from the PASDA 3.2 foot DEM. I used the ArcGIS spatial analyst tool to develop contour lines with a vertical elevation of 20 feet and index contours at 100 feet. I also made two … Continue reading
This map shows three of the remote sensing study sites with Landsat imagery. The image was from the Landsat 8 OLI sensor. The image was downloaded from the Landsat Look viewer. (https://landsatlook.usgs.gov/viewer.html ).
Here are links to old lectures on my Penn State Pass Space. http://www.personal.psu.edu/pel2/FORT230/Forestry Interpretation of Aerial Photos.htm This uses an old version of web page generated from PowerPoint. http://www.personal.psu.edu/pel2/FORT230/FilmsFiltersPhotographicProcess.htm http://www.personal.psu.edu/pel2/FORT230/Intro-aerial-photos-notes.htm Just images http://www.personal.psu.edu/pel2/FORT230/Multiple-Images.htm http://www.personal.psu.edu/pel2/FORT230/Notes-Forestry-Uses-Aerial-Photos.htm http://www.personal.psu.edu/pel2/FORT230/NotesStereoscopicViewing.htm http://www.personal.psu.edu/pel2/FORT230/Photo-Recon-Lab.htm obsolete lab http://www.personal.psu.edu/pel2/FORT230