ENVI Basics for GEOINT is a scenario-based introduction to ENVI, designed for remote sensing specialists, geospatial engineers, or risk managers to quickly master the fundamentals of processing, analyzing, and extracting information from imagery. The 12 modules use real-world scenarios to teach how to work with multispectral, hyperspectral, SAR, and LiDAR data to produce actionable intelligence products.
Core Components:
- Interface and Data Management: Navigate the ENVI interface, manage multiple datasets, and understand file formats common in GEOINT, such as NITF.
- Image Processing Fundamentals: Key skills include image enhancement, pan sharpening, orthorectification, and mosaicking.
- Feature Extraction and Analysis: Techniques for identifying, classifying, and extracting specific features from imagery, including supervised and unsupervised classification.
- Geospatial Workflows: Applying tools to solve specific problems, such as change detection or relative water depth, and create topographic products.
- SAR Imagery Processing: Working with SAR data to interpret effects of shadow, layover, and foreshortening, crucial for all-weather intelligence.
Learning outcomes
After this course, you will be able to:
- Navigate and configure the ENVI interface to efficiently open, visualize, annotate, and manage geospatial imagery.
- Enhance and interpret imagery for reconnaissance purposes, using contrast stretching, multi-view analysis, annotations, and map-ready presentations.
- Prepare and analyze NITF and optical imagery through orthorectification, mosaicking, feature measurement, and facility-focused workflows.
- Create thematic and topographic products, including shaded relief, slope categories, water depth maps, and blended EO visualizations.
- Apply image processing techniques such as pan-sharpening, segmentation, and rule-based extraction to identify infrastructure and features of interest.
- Perform change detection and time-series analysis to identify new or altered features and visualize temporal patterns.
- Analyze low-light and SAR imagery to support monitoring of activity and interpretation of radar-specific effects.
When you have successfully completed this course, consider taking the Advanced ENVI for GEOINT course. It covers more advanced workflows such as analyzing spectral properties of materials, creating vegetation products from optical and LiDAR imagery, and creating custom tools with ENVI + IDL and the ENVI Modeler.