This directory contains data and baseline images for VTK regression testing and other VTK examples. (See http://www.vtk.org/testing/TestingResults/Dashboard/MostRecentResults-Nightly/Dashboard.html to see how regression testing is used.) Also see http://public.kitware.com/Dart to learn about the Dart regression testing system.
The VTKData/Data directory are data files of various types. This includes polygonal data, images, volumes, structured grids, rectilinear grids, and multi-variate data.
The VTKData/Baseline are the testing images. These are used in testing to compare a valid image against a generated image. If a difference between the two images is found, then the test is considered to have failed.
Refer to https://www.vtk.org/Wiki/VTK_Datasets
git clone git://vtk.org/VTKData.git VTKData