# Sample credits

## Images

released for unrestricted usage. `build.py` centre-crops them to a square and resizes to 256 px
before writing `playground/images/`.

## Clips

| id | title | author | licence |
| --- | --- | --- | --- |
| traffic | Bangkok Traffic During Enduring Partners 26 | U.S. Army National Guard, Staff Sgt. James Bunn | Public domain (U.S. federal government work) |
| boats | Aerial view of sea and boats | Wayne McKelvie | CC0 1.0 |
| astronaut | Space Station Live: Williams Talks Candidly about Cameras (astronaut Jeff Williams aboard the ISS, 2016) | NASA Johnson | Public domain (NASA, U.S. federal government work) |

## Volumes

| id | title | source | licence |
| --- | --- | --- | --- |
| phantom | 3D phantom | synthetic ellipsoids, generated by the build | - |
| ct | CT head | CT scan of a head, 113 slices, Stanford volume data archive | free for research and educational use, see https://graphics.stanford.edu/data/voldata/ |
| mri | MR brain | T1 MRI of a head, 109 slices, Stanford volume data archive | free for research and educational use, see https://graphics.stanford.edu/data/voldata/ |
| cells | Cell nuclei | fluorescence microscopy of cell nuclei (`cells3d`), Allen Institute for Cell Science, distributed with scikit-image | CC BY 4.0 |

Each volume is resampled to a 48×48×48 cube of float32 values in [0, 1] (`volumes/<id>.bin`, D×H×W order).