Sample Images

Coordinate Grid

Synthetic test image generated by John Pocock 2022. CC0 (public domain).
The image is a 512x512 grid of block which are each 8x8 pixels. Each
block contains a unique four pixel signature in the top left, the
coordinate of the block, and a fine pixel-level checkerboard pattern.

File Name(s):
XYC.png

Creator(s):
John Pocock

Date Created:
2022-02-22

Restrictions:
No known restrictions. The image is CC0 licensed (public domain).

CMU-1 Small Region

A small region of the CMU-1 test image from OpenSlide.

File Name(s):
CMU-1-Small-Region.svs (original),
CMU-1-Small-Region.jpg

Creator(s):
Unknown

Restrictions:
No known restrictions. The image is CC0 licensed (public domain).

Purple Cells

Image published by the National Cancer Institute. The image shows human
colorectal cancer cells treated with a topoisomerase inhibitor and an
inhibitor of the protein kinase ATR (ataxia telangiectasia and Rad3
related). Each RGB channel represents a different stain. The red channel
shows DNA damage (gamma-H2AX) the blue channel shows the cell nuclei,
and the green channel shows foci of DNA replication.

File Name(s):
atr-induced_damage.jpg

Creator(s):
Yves Pommier and Rozenn Josse

Date Created:
2014-12

Restrictions:
No known restrictions. The image is in the public domain.

Source:
https://visualsonline.cancer.gov/details.cfm?imageid=9888

Licenses

CC0

Creetive Commons Zero (CC0) is a public domain license. It waives all
copyright to the extent that is possible under the law.

For more information, see
https://creativecommons.org/publicdomain/zero/1.0/.