Mosaic

==Digital imaging==
{{distinguish|Digital image mosaic}}
A [[photomosaic]] is a picture made up of various other pictures (pioneered by Joseph Francis), in which each "[[pixel]]" is another picture, when examined closely. This form has been adopted in many modern media and digital [[image search]]es.<ref>{{cite web|url=http://www.thudit.com/|title=Search Pictures in Mosaic Format|url-status=dead|archive-url=https://web.archive.org/web/20120613180134/http://www.thudit.com/|archive-date=13 June 2012}}</ref>

A tile mosaic is a [[digital image]] made up of individual [[tile]]s, arranged in a non-overlapping fashion, e.g. to make a static image on a shower room or bathing pool floor, by breaking the image down into square pixels formed from ceramic tiles (a typical size is {{convert|1|x|1|in|mm|abbr=on}}, as for example, on the floor of the [[University of Toronto]] pool, though sometimes larger tiles such as {{convert|2|x|2|in|mm|abbr=on}} are used). These digital images are coarse in resolution and often simply express text, such as the depth of the pool in various places, but some such digital images are used to show a sunset or other beach theme.

Recent developments in digital image processing have led to the ability to design physical tile mosaics using [[computer aided design]] (CAD) software. The software typically takes as inputs a source [[bitmap]] and a [[Palette (computing)|palette]] of colored tiles.  The software makes a [[best-fit]] match of the tiles to the source image. In order to place tiles in the manner of [[opus vermiculatum]] the first step is to find edges of visually important objects in the image.<ref>{{Cite journal|last1=Di Blasi|first1=Gianpiero|last2=Gallo|first2=Giovanni|date=2005-07-01|title=Artificial mosaics|url=https://doi.org/10.1007/s00371-005-0292-4|journal=The Visual Computer|language=en|volume=21|issue=6|pages=373–383|doi=10.1007/s00371-005-0292-4|s2cid=25493247|issn=1432-2315}}</ref> A [[Python (programming language)|Python]] implementation of a complete pixel image to mosaic vector image algorithm is available.<ref>{{Cite web|last=Beetz|first=Johannes|date=2021-04-12|title=How to generate Roman style mosaics with Python|url=https://towardsdatascience.com/how-to-generate-roman-style-mosaics-with-python-11d5aa021b09|access-date=2021-04-13|website=Medium|language=en}}</ref>
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