The functions of the linguistic message according to Roland Barthes:
The caption permits me to focus not only my gaze but also my understanding. The text directs the reader through the signs of the image, causing him to avoid some and receive others.
Text and image are complementary.It provides information & meaning that do not necessarily appear on the image’s surface.
Signifier —– Denotator—– Dennotation —- Description
Sign—- Signified —- Connotator—– Connotation —– Rhetoric