DGtalTools is a separate github project containing tools constructed using DGtal library. The main goal of this part is to gather simple and useful tools exploiting the structures and algorithms defined in DGtal. Note that in complement to DGtalTools, the DGtalToolscontrib project was added to gather specific research tools or prototypes. The resulting tools could be useful to:
 Share and apply DGtal algorithms to various data from different domains.
 Construct demonstration tools like online demonstrations (as for instance the one of the Image Processing Online).
 Simplify comparisons of different algorithms with an single framework.
 Provide useful tools of digital image related algorithms (extraction of connected components, digital contour/surface extraction, simple visualization tools…).
The source code of the tools can also be used to non DGtal familiar user to show how to include the DGtal library framework directly in their own source code (in complement of DGtal tutorial ).
DGtalTools content:
At the moment the DGTalTools project is organized as follows (new or improved in 1.3): (see also the nightly build doxygen documentation of the tools)
 converters/: utilities to convert various simple file formats:
 convertVol: a simple generic volume image converters (can process actually pgm3d, vol, longvol, raw (for writing)).
 dicom2vol: convert dicom images into 3d volumic file (need itk option in DGtal).
 freeman2img: transform one or several freeman chains into a pgm file by filling their interior areas.
 freeman2sdp: convert freeman chain towards a Sequence of Discrete Points.
 HDF52vol: convert HDF5 to vol file format.
 heightfield2shading: a new tool to render a 2D heightfield image into a shading one.
 heightfield2vol: a new tool to transform 2D heightmap into volumetric file.
 img2freeman: to extract a freeman chain contour from a grayscale image.
 imgAddNoise: a new tool to add noise (Kanungo’s) to a binary 2D object.
 itk2vol: convert any image of itk format (mhd, mha, …) to vol (available with the itk option in DGtal).
 longvol2vol: convert longvol to vol file using different conversion policies.
 mesh2heightfield: new tool to convert a mesh file into a 2D height map (from a normal direction N and from a starting point P).
 mesh2vol: Convert a mesh file into a 26separated or 6separated voxelization in a given resolution grid.
 ofs2off: convert OFS mesh format towards a OFF variant.
 raw2HDF5: convert raw image to HDF5.
 raw2vol and vol2raw: transform 3D volumes files from (resp. to) raw to vol.
 sdp2vol: a simple tool to create a 3d vol image from 3d digital points.
 slice2vol: tool to merge slices into one 3d volumic file.
 vol2heightfield: a new tool to transform volumetric file into 2D heightmap.
 vol2obj: convert a volume file into OBJ format (all voxels belonging to threshold interval)
 vol2raw: convert a vol to a 8bit raw file.
 vol2sdp: a simple tools to extract digital points from 3d vol files.</span>
 vol2slice: tool to extract all slices from 3d volumic images.
 vol2vox/vox2vol: tools to convert vol file to a MagicaVoxel VOX file and conversly.
 volAddNoise: a new tool to add noise (Kanungo’s) to a binary 3D object.
 volBoundary2obj: a simple tool to export the boundary of a an object in a volumetric file to OBJ.
 estimators/:
 2dLocalEstimators: program to compare local curvature/tangent estimators on implicit shapes:
 Maximal DSS based estimators
 Maximal DCA based estimators
 Binomial convolver based estimators
 Integral Invariants based estimators

3dCurveTangentEstimator: to estimate the tangent vector to a set of 3D integer points, which are supposed to approximate a 3D curve.
 3dLocalEstimators: program to compare 3D local curvature estimators (mean, gaussian and principal curvatures) on 3D implicit shapes with integral invariant and monge via jet fitting (with also noise robustness measure).
 curvatureBC: curvature estimator using the Binomial convolver.
 curvatureMCMS: curvature estimator using the maximal segments cover (to be updated for current DGtal version).
 curvatureScaleSpaceBCC: a tool to display the curvature scale space of a given contour with the Binomial Convolver Curvature Estimator.
 euleurCharacteristic : bruteforce tool to extract (volumetric) Euler characteristic from volumetric binary object.
 lengthEstimator: program to generate multigrid analysis of length estimators.
 generic3dNormalEstimators: Computes a normal vector field over a digitized 3D implicit surface for several estimators (IIVCMTrivialTrue).
 statisticsEstimators: compute satistics (L1, L2, Loo) from results of two estimators.
 tangentBC: tangent estimator using the Binomial convolver.
 vol2normalField: compute the normal vector field of a given vol file.
 volSurfaceRegularization: Regularize a cubical complex into a smooth quadrangulated complex.
 2dLocalEstimators: program to compare local curvature/tangent estimators on implicit shapes:
 image processing/:
 atu2v0: computes a piecewise smooth approximation of a greylevel or color image, by optimizing the AmbrosioTortorelli functional (with u a 2form and v a 0form).
 atu0v1: Computes a piecewise smooth approximation of a greylevel or color image, by optimizing the AmbrosioTortorelli functional (with u a 0form and v a 1form).
 shapeGenerator/:
 2dSimplePolygonDigitizer: new tool compute the Gauss Digitization of a simple closed polyline
 3dParametricCurveDigitizer: a tool for digitization of 3D parametric curves.
 shapeGenerator: generate multigrid shape.
 contourGenerator: generate multigrid shape contours.
 visualization/:
 2dCompImage: Computes and displays image comparisons (squared and absolute differences.
 3dCompSurfelData: a tool to compare generic surfel data informations given from two data files.
 3dCurvatureViewer: permits to compute and visualize mean or gaussian curvature and principal curvature directions of binary shape.
 3dCurvatureViewerNoise: same as 3dCurvatureViewer, but allows to add some noise to objects.
 3dCurveViewer: A tool for visualizing the tangential cover of 3d curves.
 3dDisplaySurfelData: display surfel data from SDP file with color attributes given as scalar interpreted as color.
 3dHeightMapViewer: display a 2D image as heightmap by using QGLviewer.
 3dImageViewer: new tool to display slice image with interactive translatations or rotations (can open dicom format if WITH_ITK is set to true).
 3dImplicitSurfaceExtractorBy4DExtension: a tool to visualize 3d polynomial implicit surface defined as some f(x,y,z)=0.
 3dImplicitSurfaceExtractorByThickening: a tool to visualize 3d polynomial implicit surface defined as some f(x,y,z)=0.
 3dSDPViewer: basic display of a sequence of 3d points (as voxel or sphere) and vectors by using QGLviewer.
 3dVolBoundaryViewer: Display the boundary of a volume file by using QGLviewer.
 3dVolViewer: volume file (.vol and .pgm3d) viewer with QGLViewer.
 displayContours: display discrete contours from various format (.fc (freemanchain), .sdp).
 meshViewer: display 3D mesh from OFS or OFF format.
 patternTriangulation: a new tool that draws with Board2D the convex hull, the closestpoint Delaunay triangulation or the farthestpoint Delaunay triangulation of a pattern.
 sliceViewer: a new 2D and 3D slice viewer from 3D volumic files ( pgm3d, vol, longvol, and DICOM with ITK).
 volumetric/:
 3dVolMarchingCubes: marching cubes form a Vol file
 criticalKernelsThinning3D: marching cubes form a Vol file
 homotopicThinning3D: ultimate skeleton from vol file
 volAddBorder: add a 1 voxel boundary with value 0 to a vol file.
 volCComponentCounter: a simple program to count the number of connected components in a 3D image.
 volCrop: crop an 3D vol image from to points.
 volFillInterior: tool to fill the interior of a voxel set.
 volFlip: tool to flip all volume slice images according a given dimension.
 volImageMetrics: apply basic measures from two volumetric images: RMSE and PSNR.
 volInfo: get information from a volumetric file.
 volIntensityScale: a simple tool to apply a linear scale of the intensity given in a volumetric file.
 volReSample: apply a basic re sampling of a 3D volumetric image (.vol, .longvol, .pgm3d) with a given grid size.
 volSegment: Segment volumetric file from a simple threshold which can be set automatically from the otsu estimation.
 volShapeMetrics: apply shape measures for comparing two volumetric images A and B (shape defined from thresholds).
 volSubSample: sub sample a vol file (division by 2 in each direction)
 Measures from voxel partition (true/false+, precision recall, fmeasure)
 Measures bases on euclidean distance between the two Shape A and B.
 volTrValues: a basic tool to transform the voxel values from an input/output set.
DGtalToolscontrib content:
At the moment the DFtalToolscontrib project is organized as follows (new or improved in 1.3):
 Geometry2d/:
 houghLineDetect: to detect line segment from Hough transform (using OpenCV).
 meaningFullThickness: to display the meaningful thickness of digital contour.
 distanceTransform/:
 LUTBasedNSDistanceTransform: Compute the 2D translated neighborhoodsequence distance transform of a binary imag
 CumulativeSequenceTest and RationalBeattySequenceTest: tests from LUTBasedNSDistanceTransform.
 thresholdRosin: implementation of Rosin’s algorithm to compute threshold of an unimodal intensity histogram
 Geometry3d/:
 basicEditMesh: to apply basic mesh edition (scale change, mesh face contraction, face filtering).
 basicMorphoFilter: apply basic morpho filter from a ball structural element.
 computeMeshDistances: computes for each face of a mesh A the minimal distance to another mesh B.
 obj2off: tool to convert a mesh represented in obj format into off format.
 off2obj: tool to convert a mesh represented in off format into obj format.
 off2sdp: a tool to convert a mesh into a set of points (.sdp).
 volLocalMax: extract the local maximas of a vol image within a spherical kernel.
 vol2meshAndNormals: tool to estimate normal vectors (using VCM) from digital surface defined in 3D volume. It exports the mesh and the normal vectors.
 volFillCCSize: tool to fill each Connected Component with a value corresponding to the number of voxels of the CC.
 xyzScale: a basic tool to adjust the scale of an xyz file.
 Visualisation/:
 displayLineSegments: new tool allowing to display line segment in an output image.
 displaySetOf2dPts: tool to display sets of 2d points.
 displayTgtCoverAlphaTS: to display alphathick segment given on a simple contour.
 graphViewer: add a new tool allowing to display graph from edges, vertex and radii.
 meshViewerEdit: tool to visualize a mesh and to apply simple edits (face removal, color edits…).
How to get and install DGtalTools (or DGtalToolscontrib)
You can get the DGtalTools by using git:
git clone git://github.com/DGtalteam/DGtalTools.git
or the source archive in the releases
or the DGtalToolscontrib:
git clone git://github.com/DGtalteam/DGtalToolscontrib.git
or the source archive in the releases
Installation:
 use cmake tool to generate a build script (MakeFile, VS project,..) from the CMakeLists.txt
 DGtal must be installed in your system. Concerning DGtal dependencies (boost, Qt,…), all the dependencies used to compile your DGtal library must be present to build the DGtalTools.