Noun
The process, or the result of superimposing
The placing of one image on top of another, especially placing a photograph over some other graphic
(philosophy) The building of ontological categories of a higher level on top of categories of a lower level.
Source: en.wiktionary.orgFirst, CT completely eliminates the superimposition of images of structures outside the area of interest. Source: Internet
Related, but not strictly illusions, are patterns that occur due to the superimposition of periodic structures. Source: Internet
The functionality of maps has been greatly advanced by technology simplifying the superimposition of spatially located variables onto existing geographical maps. Source: Internet