Image, Sign, and Signification

How does a picture come to mean something? This topic examines the image as a sign — the relations of resemblance, indication, and convention through which marks on a surface refer to objects and ideas.

Definition

Image, sign, and signification is the study of how pictures function as signs — how visual marks acquire reference and meaning through combinations of resemblance, causal indication, and social convention.

Scope

This topic covers the foundational question of pictorial signification: the Peircean typology of icon, index, and symbol; debates over whether depiction rests on natural resemblance or learned convention; and Nelson Goodman's analysis of pictures as symbol systems. It examines what distinguishes an iconic sign from a verbal one and how viewers learn to read pictures.

Core questions

• What makes a mark on a surface a sign that refers to something?
• Does pictorial meaning rest on natural resemblance or learned convention?
• How do icon, index, and symbol combine within a single image?
• How do pictures differ as symbol systems from verbal language?

Key theories

Peircean sign typology

C. S. Peirce classified signs by their relation to objects: icons signify by likeness, indices by existential connection, and symbols by convention. Applied to images, this clarifies that depiction is rarely pure resemblance but a layered combination of all three modes.

Pictures as symbol systems

Nelson Goodman rejected resemblance as the basis of depiction, arguing that pictures are dense, replete symbol systems whose reference is governed by convention and habit rather than by natural likeness, so that learning to read images is akin to acquiring a notational competence.

History

The analysis of the image as sign draws on Peirce's late-nineteenth-century semiotics and was developed for pictures in the structuralist and analytic philosophy of the 1960s and 1970s. Eco theorized the 'iconic sign' and criticized naive resemblance theories, while Goodman's Languages of Art reframed depiction as a conventional symbol system, setting terms for ongoing debate.

Debates

Resemblance versus convention in depiction

A central dispute pits the view that pictures signify through natural resemblance against Goodman's claim that depiction is fully conventional; Eco occupied a middle position analyzing the codes underlying iconic signs.

Key figures

• Charles Sanders Peirce
• Umberto Eco
• Nelson Goodman

Seminal works

• goodman1976
• eco1976

Frequently asked questions

Do pictures resemble what they depict, or is it convention?

There is a long-running debate. Some theorists hold that depiction rests on natural resemblance, while Nelson Goodman argued that pictures are conventional symbol systems we learn to read; many accounts combine resemblance with learned codes.