relief image
n.
An image that is formed by minor variations in surface depth.
Notes
Woodburytypes and carbon prints are examples of relief images. The denser areas of the image are formed by thicker layers of pigment; highlights are formed in areas with little or no pigment, allowing the support to show through. Although three-dimensional, the depth of a relief image is negligible, and the relief is often visible only when the print is viewed with raking light. For sculpture on a surface with a noticeable relief use 'bas relief'. For designs cut or carved into a surface, use 'intaglio'.
