David Hemphill
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Votes on activity by David Hemphill-
Change Monitoring Release Notes - October 2020
ENHANCEMENT: Capella VHR Imagery Integrated Capella VHR data is now available to Change Monitoring AOIs. Data is automatically retrieved from the catalog based on the AOI boundary. Individual colle...
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API: Open API Docs for Analytics
OpenAPI Documents are located here. Authentication and Entitlement access is located here.
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API: Downloading Analytic products using the API
Analytic products are available as GeoTIFF images. There are a number of image "assets" produced each time the analytic algorithms run. Each product contains the following assets. Note: the term "a...
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Active, Paused, and Archived AOIs
AOI's are managed using different states: Active Paused Archived Active and Paused Active AOIs continuously generate new Sentinel-1 based change results as data becomes available. To prevent AOIs...
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Sentinel-1 based Continuous Change Monitoring
Continuous Change Monitoring automatically generates new change results for an active Area of Interest (AOI) as data becomes available. For Sentinel-1 based change detection results, a new set of c...
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Viewing Analytic Results
Analytic results are displayed on the AOI Details page. The Layers control (see screenshot below), is located at the top-right of the AOI details page. This control allows for modifying which laye...
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Change Score
Change analytic results may be adjusted to increase or suppress the sensitivity of change displayed. Each pixel in a change map is assigned a value between 0 and 1 which represents the score determ...
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Using the Timeline
Analytic results are displayed on the AOI Details page with the most recent results selected by default. The following screenshot shows how instances of the analytic results appear on the timeline....
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Sentinel-1 Change Detection Results
Capella's Sentinel-1 based Change Monitoring uses a pixel-based change detection method to identify change over time. The result is referred to as a Change Map. Using multiple Sentinel-1 SAR image ...
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External ID
In some cases, an AOI may be referenced or managed by a separate software package or system of record. The External ID property provides a way to specify an ID used by another system without having...