Madagascar2011 - 02 - Présentation OTB

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Presentation of the Orfeo Toolbox (OTB)Presentation of the Orfeo Toolbox (OTB)

Stéphane MAY

stephane.may@cnes.fr

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Contents of the presentation

Introduction

Library and functions

Presentation of applications

Presentation of Monteverdi

Documentation

Orfeo Toolbox (OTB)Orfeo Toolbox (OTB)

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Contents of the presentation

Introduction

Library and functions

Presentation of applications

Presentation of Monteverdi

Documentation

Orfeo Toolbox (OTB)Orfeo Toolbox (OTB)

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Framework : ORFEO Accompaniment Program

Goals : make easier the development of new algorithms, their validation and capitalisation, fill the gap between researchers and ORFEO users

CNES is responsible for design and specification

Open source software for Image Processing labs, users and the industry

OTB= Image processing library with focus on feature extraction

Development of OTB functionalities driven by thematic ORFEO user’s need

Why Orfeo Toolbox ?Why Orfeo Toolbox ?

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What is OTB ? (1/3)What is OTB ? (1/3)

Multi-purpose library for image processing Orthorectification, cartographic projectionsImage fusion, pan-sharpeningRadiometric correctionRegistrationFiltering, segmentation, classificationFeature extraction (texture, lines, vegetation indexes)Basic change detectionBasic feature extractionSupervised learningObject countingSpatial reasoningEtc....

Many examples and binary applications for specific tasks (open source) Command line or GUI

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What is OTB ? (2/3)

• C++ library based on existing developments

OTB

Library

Applications

Developpers

Monteverdi

UsersExternal libs

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What is OTB ? (3/3)What is OTB ? (3/3)

Main characteristicsExtension of the ITK API formalismOpen Source (CeCILL licence)Multi-platforms (Linux, UNIX, MS-Windows, MAC OS)Open source libraries : ITK (segm., registr.), GDAL, OSSIM (carto, ortho), VTK, FLTK (GUI), LibSVM (supervised learning & classif.)C++ language ➢Type genericity (int, float, double, complex) - use of templates➢“Typedef” knowledge required...

Always the same formalism to plugin elementary image processing blocks Synchronized pipeline (processing on demand)Streaming and multi-threading process

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Contents of the presentation

Introduction

Library and functions

Presentation of applications

Presentation of Monteverdi

Documentation

Orfeo Toolbox (OTB)Orfeo Toolbox (OTB)

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Line detection on SAR images

Library and Functions Library and Functions

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Perceptual alignment detection

Library and Functions Library and Functions

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Change detection

Library and Functions Library and Functions

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Original Blurring Edge preserving

Denoising

Library and Functions Library and Functions

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Circle extraction

Library and Functions Library and Functions

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Watershed segmentation

Library and Functions Library and Functions

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Object segmentation

Library and Functions Library and Functions

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Supervised classification

Library and Functions Library and Functions

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Contents of the presentation

Introduction

Library and functions

Presentation of applications

Presentation of Monteverdi

Documentation

Orfeo Toolbox (OTB)Orfeo Toolbox (OTB)

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OTB applications OTB applications

otbImageViewer

otbImageViewerManager

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Applications – Image viewer

otbImageViewer

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otbSegmentationApplication (1/3)

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otbSegmentationApplication (2/3)

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otbSegmentationApplication (3/3)

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Contents of the presentation

Introduction

Library and functions

Presentation of applications

Presentation of Monteverdi

Documentation

Orfeo Toolbox (OTB)Orfeo Toolbox (OTB)

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What is Monteverdi ?What is Monteverdi ?

Framework to interactively build a image processing pipeline

Orfeo Toolbox components :

Functions and filters

Applications

Global framework

=> Monteverdi

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Visualization

Viewer

Monteverdi – ViewerMonteverdi – Viewer

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Menu Geometry > Orthorectification

MonteverdiMonteverdi

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Menu Geometry > Homologous points extraction

MonteverdiMonteverdi

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Filtering

Feature Extraction (1/3)

MonteverdiMonteverdi

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Filtering

Feature Extraction (2/3)

MonteverdiMonteverdi

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Filtering

Feature Extraction (3/3)

➢More than 65 features ! Mean, variance, Gradient, spectral angle

Textures (energy, entropy, contrast, etc)Morphological filters

Radiometric indexes• Vegetation (NDVI, ARVI, etc), Soil, Built up, Water

Edge density

Mean shift

Original data (=> no need to concatenate channels after filtering)Etc

➢Use before SVM classification for example

MonteverdiMonteverdi

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MonteverdiMonteverdi

Filtering

Change

Detection

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Menu Learning > SVM classification (1/2)

MonteverdiMonteverdi

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Menu Learning > SVM classification (2/2)

MonteverdiMonteverdi

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Contents of the presentation

Introduction

Library and functions

Presentation of applications

Presentation of Monteverdi

Documentation

Orfeo Toolbox (OTB)Orfeo Toolbox (OTB)

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Documentation

OTB user guide

Examples of class use

Example of input and output images

Doxygen documentation

Class interface, hierarchies, methods, etc

OTB utilities and applications source code (open source)

Amount of examples to build you own application

OTB Cookbook

Example of applications use

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OTB cookbook (1/2)

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OTB user guide (2/2)

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Web sites

OTB main page http://orfeo-toolbox.org/

OTB download http://sourceforge.net/projects/orfeo-toolbox/

Beta version download http://hg.orfeo-toolbox.org/

Wiki (contributors doc.) http://wiki.orfeo-toolbox.org

Bugs reporting http://bugs.orfeo-toolbox.org

Blog http://blog.orfeo-toolbox.org

Useful linksUseful links

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Thank you for your attention

http://orfeo-toolbox.org/

Orfeo Toolbox (OTB)Orfeo Toolbox (OTB)