Fig. 3.

Single-Pitch Texel rendering of features with wavelength greater than the chosen Texel length. In this example, 40 Texels of length 0.25 mm render a texture with Center Frequency 0.2 cycles/mm ($\approx -7\mathrm{dB}$) and Irregularity 0.1 cycles/mm ($=-10$ dB). A) Spatial domain representation of texture. Normalized friction for each Texel displayed in alternating line styles for clarity. B) Spectral domain representation of texture. The underlying Texel frequency distribution (left axis) is overlayed with a histogram of individual Texel pitch values used in the rendering (right axis).