Figure 1
From: Three-dimensional reconstruction of surface nanoarchitecture from two-dimensional datasets
Application of displacement maps. Each polygonal object (e.g. a plane) consists of three-dimensional points (vertices) that are connected with lines (edges) (a). Each pixel is assigned a relative height value based on their grey-scale values; black is assigned the lowest value of 0 and white the highest value of 1. (b). During the displacement map geometry conversion each vertex is translated in 3D space according to its assigned height value, thus transforming the original, planar 2D image into a new 3D geometry (c).