Body: People who study "Semiotics" investigate sign process including signs, likeness, analogy, allegory, metaphor, symbolism, and communication.
better understand history, art, and the impact of pictorial representation in human society is some of the cause to investigate "Semiotics".
Some subfields in "Semiotics" include history, pictorial semiotics, globalization.
Umberto Eco, Daniel Chandler, Winfried Noth are some authorities of "Semiotics".