Sunday, March 12, 2017

[bfrawbke] M W flip

The capital letters M and W are the only pair which can be confused for each other by a 180 degree rotation, which is surprisingly low compared to numbers and lowercase letters.  C and U look similar by 90 degrees.

Thick and thin strokes can help tell if a letter is flipped.

Previously, encoding 256 characters avoiding rotation and reflection similarity.

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