Visual representation (5)
'visual representation' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for image that I've seen before include "Pictorial representation" , "Likeness or mental picture" , "Portrait, picture" , "Simulacrum" , "Purplish pigment; pool" .)
(Other definitions for portrayal that I've seen before include "Picture or description of royal prat" , "It depicts" , "Representation" , "Depicting characters" , "painting" .)