One whose prevailing mental imagery is visual(noun)
WordNet. Princeton University. 2010.
Use "visualiser" in a sentence
"In geography lessons I use an AVerMedia visualiser, which is a camera used similarly to an overhead projector, allowing me to show diagrams on the whiteboard."
"Geo Stelar, the protagonist of the game, can see these wave roads through usage of his unique "visualiser" tool."
"His audio-visualiser game hybrid was to be the top seller on Steam that month, even out-selling Valve's own recently released titles."