/usr/share/KWVolView/Presets/TransferFunctions/ is in volview 3.4-3ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/KWVolView/Presets/TransferFunctions/CT-AAA.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-AAA2.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Bone.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Cardiac.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Cardiac2.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Cardiac3.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Chest-Contrast-Enhanced.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Chest-Vessels.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Coronary-Arteries-2.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Coronary-Arteries-3.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Coronary-Arteries.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Cropped-Volume-Bone.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Cropped-Volume-Soft-Tissue.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Liver-Vasculature.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-MIP.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Muscle.vvt
/usr/share/KWVolView/Presets/TransferFunctions/CT-Pulminary-Arteries.vvt
/usr/share/KWVolView/Presets/TransferFunctions/MR-Angio.vvt
/usr/share/KWVolView/Presets/TransferFunctions/MR-Default.vvt
/usr/share/KWVolView/Presets/TransferFunctions/MR-MIP.vvt