Learning Module 5
Geospatial Data and Digital Images
Introduction
Today there are a myriad of different types and sources of geospatial data. It is important to understand the difference between the two primary geospatial models: vector and raster. Within each of these data types there are many different formats and characteristics. The majority of the data we work in remote sensing is raster data. Therefore it is imperative to understand the characteristics and resolution properties of raster data.
Learning Outcomes
- Define the two primary geospatial models: vector and raster
- Understand raster data models, including the concept of pixels and digital numbers
- Explain the concept of image bands, the difference between true color and false color composites
- Define the four types of resolution and the concept of resolution trade-off
- Learn about data management, file types and best practices
Presentations and Content
- Geospatial Data Models
- Raster Data & Digital Images
- Image Bands
- True and False Color Composites
- Resolution
- Data Management