14.6. Perlin Noise

14.6.1. Généralités

This filter generates a noise texture using the Perlin Noise algorithm. Results don't depend on the image you opened.

Filter applied with default options: Alpha=1.200 Scale=1.800 Z offset=-1.000 Iterations=3

14.6.2. Activation du filtre

This filter is found in the image window menu under FiltersRenderNoisePerlin Noise….

14.6.3. Options

Figure 17.328. « Perlin Noise » filter options

Perlin Noise filter options

Presets, Preview, Split view, Use selection as input
[Note] Note

These options are described in Section 2, « Options communes ».

Alpha

Low values give sharper noise

Figure 17.329. « Alpha  » option examples

Alpha option examples

Alpha = 0.300

Alpha option examples

Alpha = 3.600


Échelle

Scale of the noise function: works like a zoom.

Z offset

Vary noise.

Figure 17.330. « Z offset » option examples

Z offset option examples

Z offset = -1000

Z offset option examples

Z offset = 0.900


Itérations

The number of noise octaves.

Iterations = 7