Chapter 6: Image Acquisition and Interpretation
Author: Nicolas R. Malloy
It is possible that many, if not most, of my students, were not alive before digital aerial imagery became commonplace. Most also have little direct experience with film-based photographs. Today, anyone with an internet connection and a web browser can view images from aircraft and space satellites. With imagery so commonplace and accessible, I find many students take it for granted.
However, there are still new frontiers emerging in the collection, application, and processing of images. The scientific and educational potential of civilian-operated unmanned aerial systems (UAS) is just one. Chapter 6 presents the phenomenon, concepts, equipment, and methods behind the science of Remote Sensing.
- Describe the basic principles of electromagnetic energy
- Summarize spectral bands and their mapping applications
- Identify different types of imagery resolution
- Compare the differences between aerial photographs and digital imagery
- Discuss active and passive sensing
- List remote sensing platforms
- Recall historical and current national and commercial programs for image acquisition
- Explain the principles of image correction
- Apply image enhancement techniques.
- Articulate the fundamentals of image interpretation and classification