Photomosaic

A photomosaic is also known as a photographic mosaic, a portmanteau of photo and mosaic, is a photograph that has been divided into (usually equal sized) rectangular sections, each of which is replaced with another photograph that matches the target photo. When viewed at low magnifications, the individual pixels appear as the primary image, while close examination reveals that the image is in fact made up of many hundreds or thousands of smaller images.

This module allows creation of photomosaics within Drupal, these photomosaics require a lot of mathematical computation and this module utilises caching methods to speed this up.