online image processing with orfeotoolbox wps

ONLINE IMAGE PROCESSING WITHORFEOTOOLBOX WPS

Gérald FENOY

GeoLabs SARLhttp://geolabs.fr@GeoLabsSARL

ZOO-PROJECT 1.5 OPTIONAL ORFEO TOOLBOX SUPPORT

OTB Hackfest – Toulouse – June 3rd 2015This work was supported by a grant from theEuropean Union's 7th Framework Programme(2007-2013) provided for the projectPublicaMundi (GA no. 609608).

Introduction

Gérald FENOYComputer 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 3 rd 2015

Presentation outline

ZOO-Project, The Open WPS platformOpen Source project

Scalable and generic Web Processing ServicesPublicaMundi FP7 project

ZOO-Project Orfeo Toolbox optional supportNewly implemented in ZOO-Project 1.5

ExamplesOnline and based on OTB Cookbook

Future work

Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3 rd 2015

ZOO-Project

Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3 rd 2015

ZOO-Kernel is apowerful server-side CKernel able to manageand chain WPSservices

ZOO-Services is acollection of ready touse WPS servicesbased on open sourcelibraries

ZOO-API is a serverside Javascript API forcreating and chainingWPS Services.

ZOO-Client is a is aJavaScript library forinteracting with WPSServices from webapplications.

ZOO-Project is a WPS (Web Processing Service) implementation written in C, Python andJavaScript. It is an open source platform which implements the WPS 1.0.0 standard edited by theOGC (Open Geospatial Consortium).

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 3 rd 2015

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 3 rd 2015

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 3 rd 2015

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 3 rd 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.

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 3 rd 2015

OTB Smoothing example

Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3 rd 2015

http://localhost/cgi-bin/zoo_loader.cgi?request=Execute&service=WPS&version=1.0.0&Identifier=OTB.Smoothing&DataInputs=in=Reference@xlink:href=http://geolabs.fr/dl/Landsat8Extract.tif;out=float;type=anidif;type.mean.radius=2;type.anidif.timestep=0.1;type.anidif.nbiter=5&RawDataOutput=out@mimeType=image/tiff

OTB BandMath example

Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3 rd 2015

http://localhost/cgi-bin/zoo_loader.cgi?request=Execute&service=WPS&version=1.0.0&Identifier=OTB.BandMath&DataInputs=il=Reference@xlink:href=http://geolabs.fr/dl/verySmallFSATSW_nir.tif;il=Reference@xlink:href=http://geolabs.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

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 3 rd 2015

QGIS (WPS plugin) MapMint (SDI manager) CKAN (ckan-ext-wps)

Questions ?

Thanks for your time

Gérald Fenoy

GeoLabs SARL

http://www.zoo-project.org

Gérald Fenoy GeoLabs SARL - OTB Hackfest – Toulouse – June 3 rd 2015