<a href="https://en.wikipedia.org/wiki/ambigram" class="extiw" title="en:ambigram">Ambigram</a> <b>Bounce</b>, 180° rotational symmetry. Word printed inside an <a href="https://en.wikipedia.org/wiki/Adidas" class="extiw" title="en:Adidas">Adidas</a> pink shoe. Comparison of the same photograph, right side up and upside down. <a href="https://en.wikipedia.org/wiki/Focus_stacking" class="extiw" title="en:Focus stacking">Focus stacking</a> from 15 pictures.
<a href="//commons.wikimedia.org/wiki/User:Basile_Morin" title="User:Basile Morin">Basile Morin</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>