Real data supporting HTTomolib/GPU libraries

This is an archive containing real data for testing methods of HTTomoLib and HTTomoLibGPU packages. Data description: i12_dataset1.npz - 180-degrees scan of a sandstone rock on I12 beamline. 50 sinogram slices were extracted from the middle of the full dataset (original dataset 119647.nxs). characteristics: Projection data dimensions [1801, 50, 2560] as [angles, detY, detX], flats [50, 50, 2560] and darks are [20, 50, 2560]. Data type is uint16. notes: The resolution of the sample is well-defined and the sample is fully within the field of view (FOV), which provides some freedom for experimentation using various methods. demo script: i12_dataset1_example.py in scripts_examples.zip reproduces images in images.zip i12_dataset2.npz - 180-degrees scan of unknown sample on I12 beamline. 50 sinogram slices were extracted from the middle of the full dataset (original dataset 146344.nxs) with separate flats and darks recorded. characteristics: Data dimensions [1801, 50, 2560] as [angles, detY, detX], flats and darks are [51, 50, 2560]. Data type is uint16. notes: The sample is larger than the field of view. VoCentering method to find the centre of rotation can be tested on this data. demo script: i12_dataset2_example.py in scripts_examples.zip reproduces images in images.zip geant4_dataset1.npz - Geant4 simulated tomographic dataset (in 180 degrees). It includes 20 flats and 20 darks. characteristics: Data dimensions [360, 540, 640] as [angles, detY, detX], flats and darks are [20, 50, 2560]. Data type is uint16. notes: The data is perfectly centered and withing FOV. Reconstruction methods can be tested. demo script: geant4_dataset1_example.py in scripts_examples.zip reproduces images in images.zip