Geospatial Image Visualization with PCI Geomatics

Viewing your imagery in its native format is the first step in Focus. We will use Focus within Geomatica to view our satellite imagery in its native distribution format, and view the different possible methods to opening imagery in Focus. Additionally, we will examine the different distribution formats you might encounter with satellite imagery. 

To better view your images and their contents, we need to import each one of our images to the PCIDSK format. By importing our images to the PCIDSK format, we optimize the viewing of the imagery and centralize all the different files related to an image into a single file for easy handling. The benefits of using the PCIDSK format and how to import to the PCIDSK format are described in this lecture. 

There are a number of different arrangements of image bands that can be applied to produce natural and false composite RGB images. These different image compositions can be used to highlight features of interest in the landscape. In this lecture, we'll examine the different image management components in Focus and how to configure and view RGB images.

When using Focus in Geomatica to visualize your imagery, there are many tools that can be used to control and complement how you view imagery. The following lesson provides an overview of the many tools available and describes mouse functionality related to how we view our imagery. 

Histogram stretching is a technique applied to improve how we visualize our imagery. Often without histogram stretching, our imagery appears too dark and as a result it's difficult to interpret features in our images. In this lesson, the theory of the histogram stretching technique is explained and a demonstration is provided on how to stretch a histogram. 

Satellite imagery provides much more than just beautiful pictures of the Earth. Much of its valuable information can be found in its pixels across all the channels. The following demonstrates how to view the numerical values of pixels and compute descriptive statistics. 

The following provides an overview of a variety of tools that can be used to examine the geographic component of satellite imagery. This includes examining the coordinates, performing measurements, other tasks. 

There are a number of default settings in Focus that control how imagery is loaded and viewed. This lesson highlights some of the available options in Focus to modify how you load and view your imagery to improve user experience.