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UID:pretalx-foss4g-2022-SQYE9A@talks.staging.osgeo.org
DTSTART;TZID=CET:20220824T144500
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DESCRIPTION:In this talk we are going to present how the Danish Agency for 
 Data Supply and Efficiency (SDFE) transitioned from a purely proprietary s
 ystem to an open source system based on SpatioTemporal Asset Catalog (STAC
 ) API and Cloud Optimized GeoTiffs (COGs) for servingservicing its open da
 ta collection of 5 million oblique aerial images. The new system is built 
 partly using existing open source components and partly on newly built ope
 n source components. It uses significantly less resources and lets third p
 arty users access the data in a standardized way.\n\nAn important part of 
 the process has been to develop and propose a community STAC extension for
  perspective imagery. This extends the STAC base metadata with parameters 
 which are needed to do photogrammetric calculations and measurements using
  the images. The potential of this extension is that it enables the commun
 ity to build generic perspective imagery clients in which the user can do 
 advanced photogrammetric measurements.\n\nTo  ensure support for existing 
 clients and to lower the barrier to entry the system also supports clients
  without COG reading abilities. Using open source components we have built
  "CogTiler" a high performance tile server which serves jpeg tiles directl
 y from the COGs. Most of the time this is accomplished without decompressi
 ng the jpeg data.\n\nSDFE required that all code written for this project 
 be open source and easily available to anyone. Therefore\, all the code is
  available on GitHub.
DTSTAMP:20260404T150125Z
LOCATION:Room Onice
SUMMARY:Serving oblique aerial imagery using STAC and Cloud Optimized Geoti
 ffs - Asger Skovbo Petersen
URL:https://talks.staging.osgeo.org/foss4g-2022/talk/SQYE9A/
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