Displaying Orthophotos

In this video I cover some of the basics of displaying panchromatic, 3-band, and 4-band orthophotos.  Although  this video makes use of Vermont data the information is relevant to anyone who uses orthophotographs.

Access orthophotos in VT using Map Services

Downloading imagery can be slow, plus it takes up a lot of disk space.  The good folks at the Vermont Center for Geographic Information (VCGI) have put together a collection of map services that allow one to stream the best available color and pancromatic orthophotos in VT into ArcGIS.  It's simple, it's easy, and it's fast.  This short video will show you how to make use of the VCGI image map services within ArcGIS 10.

Accessing Landsat Data and Using it in ArcGIS

With a continuous record of global imagery extending back the 1972, the USGS Landsat archives are a real treasure trove of information.  For a long time Landsat imagery was the domain of remote sensing experts, but with USGS making most Landsat images available online through their Global Visualization Viewer (GLOVIS) the data are now accessible to all.  One of the most common questions I get when discussing image processing to GIS professionals is "How do I do that in ArcGIS?"  Well, if you are looking to download some Landsat imagery and manipulate it in ArcGIS, this video is for you.  It will walk you through the entire process, from downloading the imagery from GLOVIS to generating a Normalized Difference Vegetation Index (NDVI) layer in ArcGIS.