baseline_file = os.path.join(baselinePath,png)
import vtk.test.Testing
vtk.test.Testing.VTK_TEMP_DIR = vtk.util.misc.vtkGetTempDir()
baseline_file = os.path.join(baselinePath,png)
import vtk.test.Testing
vtk.test.Testing.VTK_TEMP_DIR = vtk.util.misc.vtkGetTempDir()