Geoint2017 training open interfaces - luis bermudez
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Open Interfaces for GEOINT data. Training at GEOINT 2017, San Antonio.
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Geoint2017 training open interfaces - luis bermudez
- 2. Open Interfaces for GEOINT Data Luis Bermudez 2 Executive Director Innovation Program, OGC
- 3. Challenges 3
- 4. 4 70 petabytes of satellite imagery 30 gigabytes per satellite image From Digital Globe presentation at OGC Location Powers Sept 2016
- 5. 5 21 Billion Connected Devices in the Global Internet of Things in 2020
- 6. 6 UAV What is the accuracy Image distortion What type of platform? 00010011 10101001 00010001 10101001 Data ProcessingSensor Types? What are all the sensors in the platform
- 10. What operations should we use to retrieve a map on the web? - getMap - getImage - get2dmap - map = new xyz.Map (center ..) - etc.
- 12. 12 - getMap - getImage - get2dmap - getPNG - getlocation - map = new xyz.Map (center ..) - etc. An interface defines Operations
- 16. 16 Agreement
- 17. 17 This is what OGC open standards do e.g. Web Map Service (WMS)
- 18. 18 Interoperability Increase ability to access, fuse and apply diverse content when and where needed is critical to situational awareness and disaster planning/ response in cross-boundary and cross-domain settings
- 19. 19 Interoperability in the context of Intelligence, Surveillance, and Reconnaissance (ISR) J28 division chief from http://www.jfcom.mil/newslink/storyarchive/2007/pa071607.htm doesn’t have to worry about where his information is coming from plug and play ISR capabilities
- 20. 20 Figure 5. OV1- High Level Concept for EC Empire Challenge (EC )08
- 21. OGC 21
- 22. 22 Open Geospatial Consortium (OGC) Leading International consortium for advancing open geospatial standards
- 23. 23 Open Geospatial Consortium (OGC) • 70 standards • 550 members • 5000 users in the portal • 100 innovation projects • 230 compliant products • 900 implementations
- 25. Open Standards • Freely and publicly available • Non discriminatory • No license fees • Vendor neutral • Data neutral • Based on consensus 25
- 26. 26 Standard … and are widely implemented For WMS 41 organizations 92 compliant products 3 reference implementations Randomly selected complete list at http://www.opengeospatial.org/resource/products
- 30. 30 Images - Raster JPEG, PNG, TIFF, GeoTIFF, KML, .. Vector graphics Geospatial Data Types
- 32. 32 Geospatial Data Types Images Vector Sensors
- 33. 33 API Challenges Images What format should we use? What API?
- 34. 34 Geospatial Data Types Images Vector Sensors
- 35. 35 Geospatial Data Types and Services Images Vector Sensors WMS WCS WFS SOS Sensor Things API
- 36. WMS 36
- 37. 37 Interface to help share maps over the web Web Map Service (WMS) Link
- 38. 38 WMS Operations •GetCapabilities •GetMap •GetFeatureInfo (Optional) •DescribeLayer (Optional •GetLegendGraphic (Optional)
- 42. 42 GetCapabilities Layer Style Section
- 43. 43 GetMap - Request Example Link
- 44. 44 Example Image from a GetMap request
- 45. 45 GetMap - Request •The service provides seven map layers: DTM, Overview etc. •The coordinate reference system EPSG:27700 is the Ordnance Survey National Grid reference system. •The image returned is a PNG transparent format with width 400 and height 300 pixels, and background color is white (Hex code=0xffffff).
- 46. 46 GetMap Request without the overview layer
- 47. 47 GetMap Transparency / Translucency The map image can be overlayed with maps from other servers. In those cases it may be helpful to request the top level image in a format which supports a transparency such as the alpha channel. Then we can see what is below this map image.
- 48. 48 GetMap Scale Limits will help select best image depending on the scale
- 49. 49 GetMap - Zooming •The client can "zoom in" and "zoom out" of the map by calculating new values for the BBOX (bounding box) parameter. The same applies to all map navigation functions like panning or selecting a completely new area. •It is important to note that the server only returns an image to the client, but no additional information about the size, coordinate system, scale, etc
- 51. 51 GetFeatureInfo to get X and Y information from a previous GetMap request X =231 y =280 400,3000,300 0,0
- 54. 54 GetFeatureInfo - Response in HTML
- 55. 55 GetFeatureInfo - Response in GML
- 56. 56 GetFeatureInfo - INFO_FORMAT parameter
- 57. 57 Getting a legend via GetLegendGraphic
- 60. 60 Exceptions
- 61. WFS 61
- 62. 62 Feature
- 65. 65 Generalization •Class = Feature Type = Tree Properties of Tree: – Height – Location •All my Trees will have a height and location.
- 66. 66 Feature Instance •My favorite tree in Cartagena is the one in front of the hotel Colombia. •Height = 5 m •Location = 10.407793,-75.551262
- 67. 67 Web Feature Service (WFS) Web Service used to: •Publish Features •Access Features •Edit Features
- 68. 68 WFS Operations •GetCapabilities - summary of the service •DescribeFeatureType - structure of the feature types •GetFeature - get the feature instance •Transaction - create, update and delete geographic features •Lock Feature - protects a feature record when updating it
- 70. 70 GetCapabilities •Provides metadata about the service •Provides list of feature types •Provides list of supported filters
- 74. 74
- 80. 80 WFS Test Server Part of Testbed 12 •http://ogctestbed12.lat- lon.de/deegree/services/wfs?service=WFS&request =GetCapabilities •Data follows 90% DGIWG Profile
- 81. 81 Testbed 13 NSG profile development
- 82. 82 Filtering by property values
- 83. GML 83
- 84. 84 Geographic Markup Language (GML) •Defines an abstract feature model • Provides XML Schemas •Provides primitives: – Geometry – Feature Types –Coordinate Reference Systems •Topology
- 85. 85 Geographic Markup Language (GML) • Temporal information and dynamic features • Definitions and dictionaries • Units, measures and values • Directions • Observation • Coverages • Default styling
- 86. 86 Communities develop their own application schemas
- 88. 88 Examples • CityGML - 3D urban objects • GeoSciML - geoscience • AIXM – Aviation • ALKIS/ATKIS - German National Cadastre • AgroXML - Used in Farm Management InformationSystems • CSML – Climate Science Modelling • WaterML - Hydrology
- 90. WCS 90
- 93. 93 WCS Operations • GetCapabilities: delivers an XML-encoded description of service properties and the data holdings offered by the server inquired • DescribeCoverage: delivers XML-encoded descriptions of coverages (such as their location in space and time) • GetCoverage: delivers a coverage (or part thereof), either as original data or processed, in some suitable data format (e.g. tiff, png, jpeg, NetCDF)
- 94. SOS 94
- 95. 95 Sensor Web
- 100. 100 OGC SensorThings API Interface for Internet of Things http://developers.sensorup.com/docs/
- 101. 101 Data stream
- 103. 103 How? Sensor
- 104. 104 Querying data from bike stations •Endpoint: http://toronto-bike- snapshot.sensorup.com/v1.0/
- 107. 107 Which Things are available in the server? http://toronto-bike-snapshot.sensorup.com/v1.0/Things
- 108. 108 Getting a Datastream for a thing http://toronto-bike-snapshot.sensorup.com/v1.0/Things(206047)/Datastreams
- 109. 109 Note: Datastreams define the unit of measurement http://toronto-bike-snapshot.sensorup.com/v1.0/Things(206047)/Datastreams
- 110. 110 Getting the Observations related to a stream http://toronto-bike-snapshot.sensorup.com/v1.0/Datastreams(206051)/Observations
- 111. 111 Complex Query •Expands Datastreams and observations in one query •Feature of Interest = 7000:Ft. York / Capreol Crt. •Start time = 2017-01-01T11:30:00.000Z •End time = 2017-03-01T11:30:00.000Z
- 114. 114 Complex Query ResponseComplex Query Response (cont )
- 116. 116 Sensor Things API more than GET
- 117. 117 Error Codes
- 118. GeoPackage 118
- 119. 119 OGC GeoPackage file format • A SQLite container – Smal reliable and self contained – Serverles and zero-configuration – transactional SQL database – Limit of a file ~ 140 terabytes • vector features • tile matrix sets of imagery and raster maps at various scales • attributes (non-spatial data) • extensions http://www.geopackage.org
- 120. 120 Vectors in GeoPackaage as Simple Features
- 121. 121 Edit annotations on the field via mobile device
- 123. 123 Spot Reporting
- 124. 124 Summary •Maps use WMS •Vector use WFS – encoding GML •Mobile formats use GeoPackage •Sensor data SOS or SensorThings API •Coverage data use WCS
- 125. Scenario 125
- 127. Compliance 127
- 128. 128 Why Compliance?
- 129. 129 We have great open standards
- 130. 130 Implementations are not always perfect
- 131. 131 Interoperability can be fully achieved
- 132. 132 Need to do a healthy test
- 133. 133 Increase confidence of solution providers "Achieving OGC certification is extremely important to us as an organization - we are proud to have more than 20 products compliant with OGC standards." Stan Tilman | Hexagon Geospatial
- 134. 134 Create more business opportunities for solution providers
- 135. 135 Create more business opportunities for solution providers
- 136. 136 Benefits for buyers of solutions Minimize the delay, cost, frustration of reworking disparate implementations
- 137. 137
- 138. 138
- 139. 139 How long this it take? •Once the application is passing the test (1-2 months), organizations asking for compliance can: •Make an online request 5-10 minutes. •OGC will verify and respond in 1-3 days.
- 140. 140 What if your application is not passing the test? •Use the community forum citeforum@lists.opengeospatial.org •About 300 members participate in the forum: – Each test suite has a lead – OGC has alliances with groups supporting the test (answering questions, fixing bugs, etc.)
- 141. 141
- 142. 142 Tests available for certification Validation portal http://cite.open geospatial.org/t eamengine/
- 143. 143 How to ask for Compliance “ Purchaser seeks geospatial products that provide maximum interoperability with purchaser’s and data sharing partner’s systems. To accomplish this, purchaser seeks to make maximum use of open standards provided by the Open Geospatial Consortium (OGC), ISO ...” OGC Compliance Overview - Guide for Software Acquisition White paper (15-002r5) http://docs.opengeospatial.org/wp/15-002r5/15-002r5.html
- 144. 144 How to verify that a product is compliant?
- 145. 145 Tools are opensource and used in other projects
- 146. 146 Links • OGC validation portal: https://github.com/opengeospatial/teamengine • Source code Test code repositories https://github.com/opengeospatial?page=2&query=ets • Building the testing facility on the cloud https://github.com/opengeospatial/teamengine-builder/blob/master/build-amazon-instance.rst • Virtualization Guide https://github.com/opengeospatial/teamengine/blob/master/src/site/asciidoc/virt-guide.adoc
- 147. Contact Information •Luis Bermudez •lbermudez@opengeospatial.org •Twitter: @berdez •https://www.linkedin.com/in/bermudez 147