14.6. Perlin Noise

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

This filter is found in the main menu under Filters → Render → Noise → Perlin Noise….

Slika 17.347. “Perlin Noise” filter options

Presets, “Input Type”, Clipping, Blending Options, Preview, Merge filter, Split view

	Bilješka
	These options are described in Odjeljak 2, “Common Features”.

Alpha

Low values give sharper noise

Slika 17.348. “Alpha ” option examples

Alpha = 0.300

Alpha = 3.600

Scale

Scale of the noise function: works like a zoom.

Z offset

Vary noise.

Slika 17.349. “Z offset” option examples

Z offset = -1000

Z offset = 0.900

Iterations

The number of noise octaves.

Iterations = 7