About the Imagery UsedĪpply a definition query to the Drone 4 Image Outline layer so only the outline for EV_001.JPG will be visible. Save the georeferencing information with the raster or export the georeferenced raster as a new raster. Review control points and edit them or add additional points as necessary.Īssign an appropriate transformation that is based on the number and distribution of control points. To georeference a raster requires that youĪdd the target raster to a projected map that includes appropriate reference data.Ĭreate control points and connect them with the corresponding reference point locations on the raster. By georeferencing a raster, it can be viewed, digitized, and analyzed with other data in the coordinate system that was applied. Sometimes, it is necessary to locally fine-tune georeferencing. Although they might display in local or regional coordinate systems, they must be repositioned to fit a flat object into a spherical coordinate system. Older scanned aerial photos and maps must be georeferenced. Many current capture technologies can extract coordinate information, embedding it in or providing it with imagery. Raster data can be obtained from many sources including satellite sensors, aerial cameras, scanned maps, and drawings. This high-resolution basemap shows the southwest corner of Everson, the Nooksack River, and the Highway 544 bridge, and the imported layers show the centers of the drone images and outlines for structures and the bridge. To learn more about CAUSEV and Mount Baker, read “Testing Cross-Border Disaster Response Coordination” and “Mount Baker (Briefly)” in the fall 2017 issue of ArcUser. The scenario for this exercise, which was also the basis for a tutorial in the summer 2017 issue of ArcUser, “Modeling Volcanic Mudflow Travel Time with ArcGIS Pro and ArcGIS Network Analyst,” included a hypothetical crater collapse on Mount Baker, a dormant composite volcano with accompanying seismic activity that would result in volcanic mud and debris flows (lahars), riverine flooding, landslides, and other natural phenomena. The training exercise was held across the westernmost portion of the US-Canada border.ĭuring the week of November 13, 2017, public safety agencies in the United States and Canada, supported by other governmental and industry participants, conducted the fifth Canada-United States Enhanced Resiliency Experiment (CAUSE V) exercise. This tutorial introduces georeferencing techniques available in ArcGIS Pro using imagery collected by drones during a multi-day training exercise testing response and recovery capabilities of US and Canadian emergency agencies. Sample dataset downloaded from the ArcUser website.ArcGIS Online for Organizations account.
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