I took the idea from MacKay's book
MacKay, David J.C. Information Theory, Inference, and Learning Algorithms. Cambridge University Press, . xii+628 pp. ISBN: 978-0-521-64298-9. MR: 2012999. Available online.
in which (e.g. Figures 1.5, 47.5) he visualises the effect of a noisy channel by randomly adjusting bits in a 100x100 1-bit image of a panel from a Dilbert comic.