David Hemphill

  • Total activity 76
  • Last activity
  • Member since
  • Following 0 users
  • Followed by 0 users
  • Votes 2
  • Subscriptions 39

Activity overview

Latest activity by David Hemphill
  • David Hemphill created an article,

    OpenStreetMap (OSM) Water Layer Rasterized GeoTiff Map

    Usage: Capella Space uses OpenStreetMap (OSM) Water Layer to create land masks for filtering Vessel Detections over land masses.  Attribution: Capella Space Land & Water Masks are a modified versio...

  • David Hemphill created an article,

    Vessel Relative Sizing

    Vessel Detection categorizes each vessel detection into a size range for relative comparison when counting or filtering. The following table defines the ranges for each size label. The size label d...

  • David Hemphill created an article,

    Tasking with Vessel Detection (Console )

    Vessel detection may be requested when tasking collects by selecting the analytic as part of the tasking request. If selected, the Vessel Detection product will be automatically generated with the ...

  • David Hemphill created an article,

    Order Vessel Detection Products using Capella Console

    The Capella Console is used to search and find vessel detection products. To order for download or push to S3, select the vessel detection products and add them to the shopping basket. Complete the...

  • David Hemphill created an article,

    Searching and Viewing Vessel Detection Products using the Capella Console

    Vessel detection analytic products are available through the Capella Console search. Vessel detection products may be viewed in console along with the source imagery.  The following screen shot sho...

  • David Hemphill created an article,

    Tasking with Vessel Detection (API)

    To include Vessel Detection on a tasking request, submit using the /task API endpoint with a payload tag specifying Vessel Detection ("VS" is the product code). Details on how to make a tasking req...

  • David Hemphill created an article,

    Object Detection Metrics Overview

    Term Description Example Precision Precision is a measure of usefulness as it measure the rate of true positives (objects detected are actually vessels) If one out of every 4 vessels de...

  • David Hemphill created an article,

    Vessel Detection Metadata Fields

    Field Name Example or range Description Class name Vessel We currently support one class, which is Vessel (presence) Vessel size XS, S, M, L, XL Relative size approximation...

  • David Hemphill created an article,

    Vessel Detection File Descriptions

    Vessel Detection Files Each vessel detection analytic produces a set of files. The screen shot shows the download options from the Capella Console order page. The files are described below.   F...

  • David Hemphill created an article,

    Areas of Interest Quantity Limits

    The number of AOIs that may be created are limited based on contract terms. There are two AOI limits to be aware of: Active or Paused AOIsA contract-specified number of AOIs may be active (or paus...