Orthorectification of Historic Imagery for Kenai Fjords National Park and Aniakchak National Monument and Preserve: Final Report
Robertson A. 2011. Orthorectification of Historic Imagery for Kenai Fjords National Park and Aniakchak National Monument and Preserve: Final Report. Natural Resource Technical Report. NPS/SWAN/NRTR—2011/481. National Park Service, Natural Resource Stewardship and Science. Fort Collins, Colorado
In 2005, the NPS Inventory and Monitoring Program acquired high-resolution IKONOS orthoimage products for two of the SWAN parks, Kenai Fjords National Park (KEFJ) and Aniakchak National Monument and Preserve (ANIA). Over the next several years, the Southwest Alaska Network (SWAN) worked cooperatively with Saint Mary’s University of Minnesota (SMUMN) to complete orthorectification of hardcopy aerial photographs for KEFJ and ANIA from the 1950s, 1980s, and 1990s. The objective of the project was to create a library of digital, orthorectified historic aerial photography that could be used in support of ongoing research studies for both KEFJ and ANIA. In addition, this project provided the opportunity to test the functionality and capabilities of different orthorectification software packages; to assess the utility of IKONOS satellite imagery and IKONOS-derived Digital Elevation Models (DEMs) for georeferencing and orthorectification processes; and to develop an optimized workflow methodology for cost effective orthorectification of aerial photography over extensive study areas and for multiple points in time. As a follow-on to the air photo orthorectification, SMUMN created photo mosaics that digitally merged individual photos together into a larger composite image. This second phase of the project was set up to test the mosaicking process for different years of photography and within a variety of geographic locations, as well as testing a variety of geospatial photo mosaicking software packages to determine an optimum mosaicking methodology.
- Type
- Published Report
- Authors
- Robertson, Andrew
- Date of Issue
- 2011-08-18
- Publisher
- National Park Service, Natural Resource Stewardship and Science
- Units
- ANIA , KEFJ , NRSS
- Keywords
- air photos, Landscape change, Remote Sensing, Southwest Alaska