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Including TIFF tags in the MetaDataDictionary
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Tiff images are widely used and domain and instrument specific information is often included in some tags. There isn't any standard way of making use of this information in ITK at present. This article introduces some minor additions to the ITK tiff reader to [...]

An image sampling framework for the ITK
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This document describes the implementation of image samplers using the Insight Toolkit ITK url{www.itk.org}. Image samplers take a set of `picks' from an image and store them in an array. A sample consists of the location of the pick (a point) and the [...]

Gaussian Interpolation
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In this submission, we offer the GaussianInterpolationImageFunction which adds to the growing collection of existing interpolation algorithms in ITK for resampling scalar images such as the LinearInterpolateImageFunction, BSplineInterpolateImageFunction, and [...]

InsightToolkit Kinetic Analysis (itk::ka) Library
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This paper describes how to compile and use the Insight Toolkit Kinetic Analysis library (itk::ka), to perform analysis of dynamic medical images, along with a brief overview of the library source code. Supplied, are a set of interfaces to facilitate [...]

GPU Volume Ray Casting of two Volumes within VTK
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We have modified the current VTK volume rendering on GPU to allow simultaneous rendering of two volumes, each of them with its own color and opacity transfer functions. These changes have led to the creation of two new C++ classes and several GLSL shaders. We [...]

Grid voxelization with partial volume effects in VTK
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We present a filter that voxelizes the volume of a 3D structured, unstructured, or rectilinear grid into a vtkImageData with partial volume effects. The partial grid volume occupying each voxel is computed exactly from the intersection of the grid volume and [...]

Two Point Minimum Cost Path Approach for CTA Coronary Centerline Extraction
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In this work a minimum cost path approach is adopted to extract coronary artery centerlines from CTA data. The algorithm depends on the manual definition of the start and end point of the vessel. The cost image used in the minimal cost path approach is based [...]

Visualization of 4D-PET/CT, Target Volumes and Dose Distribution: Applications in Radiotherapy Planning
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In radiation treatment (RT) planning medical doctors need to consider a variety of information sources for anatomical and functional target volume delineation. The validation and inspection of the defined target volumes and the resulting RT plan is a complex [...]

Interactive Correspondence Selection
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This document presents a GUI application to manually select corresponding points in two data sets. The data sets can each be either an image or a point cloud. If both data sets are images, the functionality is equivalent to Matlab's 'cpselect' function. There [...]

Adding Refined Isosurface Rendering and Shadow Mapping to vtkGPUVolumeRayCastMapper
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In the medical simulation world the use of isosurfaces is a common action, as the information from some sources, e.g. CTs, is very well defined, and the isosurface can be easily set. Additionally, in any simulator shadows are a necessary addition to increase [...]

RGB Image Color Space Transformations
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This paper describes a set of pixel accessors that transform RGB pixel values to a different color space. Accessors for the HSI, XYZ, Yuv, YUV, HSV, Lab, Luv, HSL, CMY, and CMYK color spaces are provided here. This paper is accompanied with source code for [...]

Alternative Memory Models for ITK Images
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By default ITK images use a contiguous memory model. This means pixel elements are stored in a single 1-D array, where each element is adjacent in memory to the previous element. However in some situations it is not desirable to use this memory model. This [...]

Combining labeled images with ITK
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Combining some labeled images is a quite common and useful task in image analysis. That's something we may want to do to prepare the markers for a watershed from markers for example, or to write the output of several segmentations in a single file. This [...]

RLEImage: run-length encoded memory compression scheme for an itk::Image
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This document describes a new class, itk::RLEImage, which uses run-length encoding to reduce the memory needed for storage of label maps. This class is accompanied by all the iterators to make it a dropin replacement for itk::Image. By changing the image [...]

A Label Geometry Image Filter for Multiple Object Measurement
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The itkLabelGeometryImageFilter is a new ITK filter that enables the measurement of geometric features of labeled objects. It calculates features similar to the "regionprops" command of Matlab. It is related to the itkLabelStatisticsImageFilter in that both [...]

Automatic Junction Detection for Tubular Structures
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Junctions of tubular structures (vasculature, trachea, neuron, etc) in medical images are critical for the topology of these structures. Identification of them is helpful in many applications. For example, quantification of geometric vascular features, [...]

Enabling ITK-based processing and 3D Slicer MRML scene management in ParaView
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This paper documents on-going work to facilitate ITK-based processing and 3D Slicer scene management in ParaView. We believe this will broaden the use of ParaView for high performance computing and visualization in the medical imaging research community. The [...]

Vessel Enhancing Diffusion
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Recently, an implementation of the Vessel Enhancing Diffusion (VED) algorithm [3] using the Insight Toolkit (ITK) framework [2] has been proposed by Enquobahrie et al.[1]. In this paper we present an alternative implementation, for two reasons. First, in this [...]

An OpenCL implementation of the Gaussian pyramid and the resampler
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Nonrigid image registration is an important, but resource demanding and time-consuming task in medical image analysis. This limits its application in time-critical clinical routines. In this report we explore acceleration of two time-consuming parts of a [...]

Isotropic and Steerable Wavelets in N Dimensions. A multiresolution analysis framework.
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This document describes the implementation of the external module ITKIsotropicWavelets, a multiresolution (MRA) analysis framework using isotropic and steerable wavelets in the frequency domain. This framework provides the backbone for state of the art [...]

A new implementation of itk::ImageToImageFilter for efficient parallelization of image processing algorithms using Intel Threading Building Blocks
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Modern medical imaging makes use of high performance computing to accelerate image acquisition, image reconstruction, image visualization and image analysis. Software libraries that provide implementations of key medical imaging algorithms need to efficiently [...]

Importing Contours from DICOM-RT Structure Sets
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This paper presents parsing software for importing contours from DICOM RT structure set files into binary image files. This is a common requirement for transferring expert manual segmentations from radiotherapy treatment planning software into external image [...]

Voxelizer plug-in for Blender
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This document describes a plug-in for Blender (www.blender.org) that allows to rasterize 3D mesh objects into 3D voxel data, i. e. it allows to voxelize Blender meshes. In 2D, this process can be compared to rasterization of vector graphics into pixel [...]

On the Importance of Location and Features for the Patch-Based Segmentation of Parotid Glands
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The segmentation of parotid glands in CT scans of patients with head and neck cancer is an essential part of treatment planning. We introduce a new method for the automatic segmentation of parotid glands that extends existing patch-based approaches in three [...]

Generating a Deformation Field from a Transform
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This document describes a new class that takes an doxygen{Transform} and evaluates the deformation at points in a user-defined region. The class is implemented using the Insight Toolkit url{www.itk.org}. This paper is accompanied with the source code, [...]

Importing Contours from DICOM-RT Structure Sets with ITK4
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This paper presents code for reading contours from DICOM RT structure set files into binary labels. This is a common requirement for transferring expert manual segmentations from radiotherapy treatment planning software into external image analysis [...]

Multimodal Analysis of Vasogenic Edema in Glioblastoma Patients for Radiotherapy Planning
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Glioblastoma (GBM) is the most common type of primary brain tumor, which is characterized by an infiltrative growth pattern. In current practice, radiotherapy planning is primarily based upon T2 FLAIR MRI despite its known lack of specificity in the detection [...]

Diffeomorphic Demons Using ITK's Finite Difference Solver Hierarchy
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This article provides an implementation of our non-parametric diffeomorphic image registration algorithm generalizing Thirion's demons algorithm. Within the Insight Toolkit (ITK), the demons algorithm is implemented as part of the finite difference solver [...]

Numerical Q-Ball Image Reconstruction: an ITK Implementation
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This document describes an implementation of David S. Tuch's numerical Q-Ball reconstruction algorithm implemented using the Insight Toolkit ITK (www.itk.org). The document is accompanied with the source code, input data, parameters and output data that were [...]

Statismo - A framework for PCA based statistical models
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This paper describes the Statismo framework, which is a framework for PCA based statistical models.Statistical models are used to describe the variability of an object within a population, learned from a set of training samples. Originally developed to model [...]

ITK Image IO interface with Apple iOS
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We have recently detailed the procedure for building ITK on the iOS. In this work, we contribute itkiOSImageIO , the necessary ITK class that provides the input/output (IO) interface with the repository of images stored on iOS Apple devices, such as the iPod [...]

Efficient contour detection in binary and label images
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ly in ITK, the only way to find the contour of the objects in a binary image is to use the BinaryErodeImageFilter, with a kernel of radius 1. This filter is a generic filter, made to support any shape and size of structuring element, and thus is not optimized [...]

Providing values of adjacent voxel with vtkDiscreteMarchingCubes
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The contribution to VTK presented in this article is an extension to vtk::vtkDiscreteMarchingCubes to also create vtk::vtkPointData scalars containing the value of the adjacent voxel. These can be used to remove regions of the marching-cubes 1 mesh depending [...]

A Spline-Driven Image Slicer
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In this article, a spline driven image slicer algorithm is presented. It is concretized through a vtkAlgorithm-inherited class that takes two inputs and gives two outputs. The first input is the volume from which the slice should reconstructed while the [...]

Computing Textural Feature Maps for N-Dimensional images
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This document describes a new remote module implemented for the Insight Toolkit ITK, itkTextureFeatures. This module contains two texture analysis filters that are used to compute feature maps of N-Dimensional images using two well-known texture analysis [...]

Efficient multithreading for manycore processor: Multidimensional domain decomposition using Intel® TBB
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The Insight Toolkit (ITK) utilizes a generic design for image processing filters that allows many developers to rapidly implement new algorithms. While ITK filters benefit from a platform-independent and versatile multithreading capability, the current [...]

Facet Analyser: ParaView plugin for automated facet detection and measurement of interplanar angles of tomographic objects
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The presented ParaView plugin allows easy access to the algorithm described in Ref 1. It enables analysis of faceted objects that exhibit distortions in their digital representation, e.g. due to tomographic reconstruction artifacts. The contributed [...]

An ITK Implementation of the Symmetric Log-Domain Diffeomorphic Demons Algorithm
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This article provides an implementation of the symmetric log-domain diffeomorphic image registration algorithm, or symmetric demons algorithm for short. It generalizes Thirion's demons and the diffeomorphic demons algorithm. The main practical advantages of [...]

Label object representation and manipulation with ITK
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Richard Beare has recently introduced a new filter to efficiently labelize the connected components with ITK, and has also proposed to use the run-length encoding used in that filter to implement some of the most useful binary mathematical morphology [...]

Non-rigid Groupwise Registration using B-Spline Deformation Model
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In this work, we extend a previously demonstrated entropy based groupwise registration method to include a non-rigid deformation model based on B-splines. We describe an open source implementation of the groupwise registration algorithm using the [...]

Multidimensional Arrays and the nArray Package
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At the Johns Hopkins University’s Engineering Research Center for Computer-Integrated Surgical Systems and Technology (ERC-CISST) laboratory, we have designed and developed a platformindependent C++ software package, called the nArray library, that provides [...]

An entropy based multi-thresholding method for semi-automatic segmentation of liver tumors
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Liver cancer is the fifth most commonly diagnosed cancer and the third most common cause of death from cancer worldwide. A precise analysis of the lesions would help in the staging of the tumor and in the evaluation of the possible applicable therapies. In [...]


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