ONLINE IMAGE PROCESSING WITH ORFEOTOOLBOX WPS
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ZOO-Project is an open source platform that implements the OGC WPS standard. It allows existing geospatial algorithms to be reused as WPS services with no or minor code modifications. The presentation outlined ZOO-Project's optional support for Orfeo Toolbox, which allows OTB applications to be used as WPS services. Examples were provided of running OTB smoothing and bandmath applications as WPS processes online. Future work involves using OTB WPS services from clients and deploying them in SDIs to provide web-based image processing capabilities.
ONLINE IMAGE PROCESSING WITH ORFEOTOOLBOX WPS
- 1. ONLINE IMAGE PROCESSING WITH ORFEOTOOLBOX WPS Gérald FENOY GeoLabs SARL http://geolabs.fr @GeoLabsSARL ZOO-PROJECT 1.5 OPTIONAL ORFEO TOOLBOX SUPPORT OTB Hackfest – Toulouse – June 3rd 2015 This work was supported by a grant from the European Union's 7th Framework Programme (2007-2013) provided for the project PublicaMundi (GA no. 609608).
- 2. Introduction Gérald FENOY Computer scientist Director of GeoLabs SARL (since 2007) ZOO-Project PSC Chair (since 2009) OSGeo Board of Directors (since 2013) OGC individual member (since 2012) Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015
- 3. Presentation outline ZOO-Project, The Open WPS platform Open Source project Scalable and generic Web Processing Services PublicaMundi FP7 project ZOO-Project Orfeo Toolbox optional support Newly implemented in ZOO-Project 1.5 Examples Online and based on OTB Cookbook Future work Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015
- 4. ZOO-Project Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015 ZOO-Kernel is a powerful server-side C Kernel able to manage and chain WPS services ZOO-Services is a collection of ready to use WPS services based on open source libraries ZOO-API is a server side Javascript API for creating and chaining WPS Services. ZOO-Client is a is a JavaScript library for interacting with WPS Services from web applications. ZOO-Project is a WPS (Web Processing Service) implementation written in C, Python and JavaScript. It is an open source platform which implements the WPS 1.0.0 standard edited by the OGC (Open Geospatial Consortium).
- 5. ZOO-Kernel (1) ZOO-Kernel is the heart of ZOO-Project implements and complies with the WPS standard. It is able to perform the WPS operations as indicated in the OpenGIS ® specification, as listed bellow: - GetCapablities: Returns service-level metadata information.It provides the list of available processing services. - DescribeProcess: Returns a description of a process, including its supported input and output. - Execute: Launches computation and returns the output produced by a particular process. Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015
- 6. ZOO-Kernel (2) ZOO-Kernel is an extensible WPS server which provides a full-featured processing engine which runs on Linux, Mac OSX ™ and Windows ™ operating systems. ZOO-Kernel works on common web servers (namely Apache or IIS ™) and can be seamlessly integrated to new or existing web platforms. ZOO-Kernel is a polyglot. The software is written in a valid form of multiple programming languages, which performs the same operations independent of the programming language used to compile or interpret it. C, Fortran, Java, PHP, JavaScript, Ruby, Perl Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015
- 7. What is a ZOO-Service ? A ZOO-Service is a WPS compliant Web Service working with ZOO- Kernel, the ZOO-Project WPS server. A ZOO Service is a couple composed of: - Source code you want to create or reuse as WPS Service - A configuration file (.zcfg) which describes this WPS Service The ZOO-Service configuration file (.zcfg) describes a WPS service. It provides metadata information on a particular WPS Service and it is parsed by ZOO-Kernel when DescribeProcess and Execute request are sent. Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015
- 8. Scalable and generic WPS Services ZOO-Project includes ready-to-use WPS Services based on reliable open source libraries such as GDAL, CGAL, GRASS GIS, OrfeoToolbox and SAGA GIS. Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015 ZOO-Services aim at reusing existing geospatial algorithms through standard WPS, with no or very minor modification of the involved software or library source codes.
- 9. Orfeo Toolbox optional support Using OTB Applications on the server-side through WPS requests - No modifications in OTB source code - Loading the OTB Applications as shared libraries - Automatic creation of zcfg files (otb2zcfg) Prerequisites : ZOO-Project 1.5 (latest trunk) Orfeo Toolbox (OTB 4.2.1 ) Insight Segmentation and Registration Toolkit (ITK-4.7 ) Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015
- 10. OTB Smoothing example Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015 http://localhost/cgi-bin/zoo_loader.cgi? request=Execute&service=WPS&version=1.0.0&Identifier=OTB.Smoothing&DataInput s=in=Reference@xlink:href=http://geolabs.fr/dl/Landsat8Extract.tif;out=float;type=anidi f;type.mean.radius=2;type.anidif.timestep=0.1;type.anidif.nbiter=5&RawDataOutput=o ut@mimeType=image/tiff
- 11. OTB BandMath example Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015 http://localhost/cgi-bin/zoo_loader.cgi? request=Execute&service=WPS&version=1.0.0&Identifier=OTB.BandMath&DataInputs=il=Refere nce@xlink:href=http://geolabs.fr/dl/verySmallFSATSW_nir.tif;il=Reference@xlink:href=http://geola bs.fr/dl/verySmallFSATSW_r.tif;il=Reference@xlink:href=http://geolabs.fr/dl/verySmallFSATSW.tif ;out=uint8;exp=cos%28im1b1%29-%28-im2b1%29*im3b1-%28ndvi %28im3b3,im3b4%29%29&RawDataOutput=out@mimeType=image/tiff
- 12. Future work - Using the ZOO-Project OTB optional support from various WPS clients - Deploy OTB WPS inside new or existing SDIs and provide image processing capabilities over the Web. - Scalable WPS for processing huge amounts of imagery Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015 QGIS (WPS plugin) MapMint (SDI manager) CKAN (ckan-ext-wps)
- 13. Questions ? Thanks for your time Gérald Fenoy GeoLabs SARL http://www.zoo-project.org Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3rd 2015