Fig. 1

Main data formats supported by ABrainVis. A Tractography dataset, composed of fibers or streamlines. Each fiber is represented by a 3D polyline consisting of a set of 3D points. Other information may be included, such as fiber bundle names or a spatial transformation, not represented here. B Mesh file, composed of a list of 3D vertices (3D points), and a list of triangles, where each triangle is defined by the indices of the three vertices that compose it. Other information can be included, such as vertex normals (not represented here). C MRI volume, composed of a 3D matrix of voxels (volume elements), where each voxel is associated with an intensity. The file also contains other information, such as voxel dimensions, included on a header (not represented here). Both tractography datasets and meshes have associated only one display object each, while MRI volumes can be displayed as slices or volume rendering