Here is a list of all modules:

[detail level 1234567]

►Thematic modules	The Orfeo Toolbox includes processing modules corresponding to radiometry, geometry, etc
Radiometry modules
Projection modules
►FeatureExtraction modules
Textures modules
Boost alike helpers	Various helpers that are likely to eventually end-up in boost by themselves
►Geometry	Classes and functions aimed toward the manipulation of set of geometric objects. This module mainly provides an encapsulation of OGR API
Filters of geometries sets
Geometry Internals
OGRGeometry Wrappers	Helper definition to handle `OGRGeometry` objects
Visualization modules	Classes related to the visualization framework of OTB to enable an easy building of new simple applications with a plugin system
►Data Representation Objects	The Insight Toolkit includes several data representation objects such as Image, Mesh, Pixel, Points, etc
Image Representation Objects
Mesh Representation Objects
Path Representation Objects
Geometry Representation Objects
►Data Access Objects	The Insight Toolkit includes several ways to access data through the user of iterators, pointers, indexes, etc
Image Access Objects
Mesh Access Objects
►Iterators
Image Iterators
Objects Related to Tensor Images	This category includes the objects required for representing diffusion tensor images in ITK
►Data Processing Objects	The Insight Toolkit includes several ways to process the data using objects such as adaptors, functions, filters, and transforms
►Filters
►Image Filters
►Intensity Image Filters
Mathematical Morphology Image Filters
Image Enhancement Filters
►Image Feature Extraction Filters
Image Gradient Filters
►Image Segmentation Filters
►Intensity-Based Image Segmentation Filters
►Pixel Classification Filters
Supervised Classification Filters
Unsupervised Classification Filters
Watershed-based Segmentation Filters
►Region-Based Segmentation Filters
Fuzzy Connectedness-based Segmentation Filters
Region Growing Filters
Markov Random Field-based Filters
►Model-Based Image Segmentation Filters
Mesh Segmentation Filters
Level Set-Based Segmentation Filters
Hybrid Segmentation Filters
Mesh Filters
►Geometric Transformation Filters
Image Pyramid Filters
►Registration Filters
►Components of Registration Methods	Registration methods are implemented by combining basic components. This framework allows great flexibility in the construction of registration methods, and maximize code reuse. The basic components of a registration method are described in Registration Techniques
Similarity Metrics of Registration Methods	Similarity metrics are the objects that evaluate how similar two objects are. They are used in registration to quantify how well a transform is mapping the reference object on top of the target object
Optimizers
►Image Registration Methods
Rigid Registration Methods
Affine Registration Methods
Deformable Registration Methods
►Model - Image Registration Methods
PointSet to Image Registration Methods
Input and Output Filters
Filters of geometries sets
Data Sources
Transforms
Image Adaptors
►Functions
►Image Functions
Image Interpolators
Spatial Functions
Finite Difference Functions
Operators
►Numerics	Insight provides support for numerical operations at two levels. First, Insight uses an external library called VNL, which is one component of the VXL toolkit. This library provides linear algebra, optimization, and FFTs. Second, Insight provides numerical optimizers designed for the registration framework and statistical classes designed to be used for classification and segmentation
Optimizers
►System Objects
ITK System Objects
OS System Objects
►Thread Safety	This groups catalog classes according to its compliance with thread safety. ITK is designed to be thread-safe, but in some particular cases this capability cannot be supported and for this reason a classification is needed
Thread Safe classes
Thread Unsafe classes
Thread Safety Unknown
►Support for Multithreading	This category classifies filters according to their support for performing processing in multiple threadS
Multithreaded Filters
Singlethreaded Filters
Filters that can potentially be modified to be Threaded
►Processing images region by region	This category classifies filters according to their capatity for supporting Streaming
Filters supporting Streaming
Filters that cannot be streamed
Filters that could be implemented to be streamed
►Group Core	This group contains the core module used in Orfeo ToolBox
Module OTBBoostAdapters
Module OTBCurlAdapters
Module OTBGdalAdapters
Module OTBAppCore
Module OTBColorMap
Module OTBCommon
Module OTBComplexImage
Module OTBConversion
Module OTBConvolution
Module OTBDEM
Module OTBDensity
Module OTBDescriptors
Module OTBEdge
Module OTBFunctor
Module OTBFuzzy
Module OTBMajorityVoting
Module OTBCarto
Module OTBExtendedFilename
Module OTBIOGDAL
Module OTBIOKML
Module OTBIOXML
Module OTBImageIO
Module OTBKMZWriter
Module OTBTestKernel
Module OTBVectorDataIO
Module OTBImageBase
Module OTBImageList
Module OTBImageManipulation
Module OTBIndices
Module OTBInterpolation
Module OTBLabelMap
Module OTBMetadata
Module OTBMoments
Module OTBMosaic
Module OTBObjectList
Module OTBOpticalCalibration
Module OTBPanSharpening
Module OTBPath
Module OTBPointSet
Module OTBProjection
Module OTBSmoothing
Module OTBStatistics
Module OTBStreaming
Module OTBTransform
Module OTBVectorDataBase
Module OTBVectorDataManipulation
Module OTBApplicationEngine
Module OTBCommandLine
Module OTBQGIS
Module OTBSWIGWrapper
►Group FeaturesExtraction	This group contains algorithms dedicated to hyperspectral remote sensing
Module OTBAppFeaturesExtraction
Module OTBCloudDetection
Module OTBCorner
Module OTBTextures
Module OTBChangeDetection
Module OTBContrast
Module OTBDimensionalityReduction
Module OTBImageNoise
Module OTBMathParser
Module OTBMathParserX
Module OTBPolarimetry
Module OTBTimeSeries
Module OTBWavelet
►Group Hyperspectral	This group contains algorithms dedicated to hyperspectral remote sensing
Module OTBAnomalyDetection
Module OTBAppHyperspectral
Module OTBEndmembersExtraction
Module OTBUnmixing
►Group Learning	This group contains algorithms and frameworks related to supervised or unsupervised learning
Module OTBAppLearning
Module OTBDempsterShafer
Module OTBDimensionalityReductionLearning
Module OTBLandSatClassifier
Module OTBLearningBase
Module OTBMarkov
Module OTBSOM
Module OTBSampling
Module OTBSupervised
Module OTBUnsupervised
►Group Miscellaneous	This group contains miscellaneous algorithms
Module OTBAppMiscellaneous
Module OTBSimulation
►Group Remote	This group of modules is for OTB based code that have additional third-party dependencies not bundled with the toolkit, new algorithms or implementations seeking greater exposure and adoption, algorithms that hope to eventually be integrated into the toolkit, niche algorithms with limited application, and Modules in progress that do not yet have the test coverage and cross-platform standards required by the main toolkit. The modules are OFF by default in ITK's CMake configuration. Note that these modules do get the same level of support and backwards compatibility as other modules in the toolkit
Module OTBTemporalGapFilling
Module S1TilingSupportApplications
Module SertitObject
Module otbGRM
►Group SAR	This group contains algorithms related to SAR processing
Module OTBAppSAR
Module OTBSARCalibration
►Group Segmentation	This group contains algorithms related to image segmentaiton
Module OTBAppSegmentation
Module OTBCCOBIA
Module OTBLabelling
Module OTBMeanShift
Module OTBMetrics
Module OTBMorphologicalProfiles
Module OTBOGRProcessing
Module OTBWatersheds
►Group StereoProcessing	This group contains algorithms related to registration of images
Module OTBAppStereo
Module OTBDisparityMap
Module OTBStereo
►Group ThirdParty	This group contains all Orfeo ToolBox third parties
Module OTB6S
Module OTBBoost
Module OTBCurl
Module OTBDate
Module OTBGDAL
Module OTBGSL
Module OTBGeoTIFF
Module OTBITK
Module OTBLibSVM
Module OTBMuParser
Module OTBMuParserX
Module OTBOpenCV
Module OTBShark
Module OTBSiftFast
Module OTBTIFF
Module OTBTinyXML
Module OTBlibkml