A slicing-based coherence measure for clusters of DTI integral curves
ثبت نشده
چکیده
We present a slicing-based coherence measure for clusters of DTI integral curves. For a given cluster, we probe samples from the cluster by “slicing” it with a plane at regularly spaced locations parameterized by curve arclengths. Then we compute a stability measure based on the spatial relations between the projections of the curve points in individual slices and their change across the slices. We demonstrate its use in refining agglomerative hierarchical clustering results of DTI curves that correspond to neural pathways. Expert evaluation shows that refinement based on our measure can lead to improvement of clustering that is not directly recovered using standard methods.
منابع مشابه
A Slicing-Based Coherence Measure for Clusters of DTI Integral Curves
We present a slicing-based coherence measure for clusters of DTI integral curves. For a given cluster, we probe samples from the cluster by slicing it with a plane at regularly spaced locations parametrized by curve arc lengths. Then we compute a stability measure based on the spatial relations between the projections of the curve points in individual slices and their change across the slices. ...
متن کاملSlicing-based coherence measure for refining clusters of 3D curves
We present a method for refining clusters of 3D curves using a new coherence measure. Curves are common geometric models used for representing the information derived from different types of data, in particular scientific data represented as vector and tensor fields. Our method starts with an initial set of clusters. For each cluster, we probe samples from the cluster by “slicing” it with a pla...
متن کاملConnectivity-aware sectional visualization of 3D DTI volumes using perceptual flat-torus coloring and edge rendering
We present two new methods for visualizing cross-sections of 3D diffusion tensor magnetic resonance imaging (DTI) volumes. For each of the methods we show examples of visualizations of the corpus callosum in the midsagittal plane of several normal volunteers. In both methods, we start from points sampled on a regular grid on the cross-section and, from each point, generate integral curves in bo...
متن کاملConnectivity-Aware Sectional Visualization of 3D DTI Volumes using Perceptual Flat-Torus Coloring and Edge Rendering
We present two new methods for visualizing cross-sections of 3D diffusion tensor magnetic resonance imaging (DTI) volumes. For each of the methods we show examples of visualizations of the corpus callosum in the midsagittal plane of several normal volunteers. In both methods, we start from points sampled on a regular grid on the cross-section and, from each point, generate integral curves in bo...
متن کاملConnectivity-aware sectional visualization of DTI volumes
We present three methods for visualizing cross-sections of diffusion tensor magnetic resonance imaging (DTI) volumes. The goal of our methods is to effectively bring 3D out-of-plane connectivity information into the cross-section plane, as inspecting 2D cross-sections is a common practice for scientific data exploration. In order to derive the connectivity information associated with a crosssec...
متن کامل