Rough appearance

Fine relief and grain catch light irregularly, making surface roughness visible.

Visual traits

• Irregular relief
• Grain
• Surface coarseness

Expected changes

• Fine surface relief is more likely to be visible
• Light is more likely to vary irregularly across details

Definition

Rough appearance is a surface look that feels unsmooth through irregular fine relief, grain, fibers, or chips. It does not determine actual material, the cause of damage, dirt, or a low-resolution image.

In more detail

Light breaks across small relief so grain can be read within edges and planes. Scale of roughness, degree of sheen, and color can be adjusted separately. It is distinct from matte reflection alone, unintended noise, and blurred resolution.

Includes

• Irregular surface relief
• Texture with legible grain or fibers

Excludes

• A surface that is only non-shiny
• Compression noise or low resolution
• Actual material or damage-cause specification

What this does not imply

• A particular material
• Dirt or damage
• Low resolution
• Matte reflection

Variability

Relief scale, sheen, and color can be adjusted separately.

Usage

• Show irregular relief or grain

Distinguish similar expressions

• Specify material and damage separately

Typical uses

• Add coarseness to a smooth surface
• Strengthen surface character with fine relief

Possible failure modes

• It looks like digital noise
• The surface becomes blurry
• Relief becomes so large that it forms a different shape