14.6. Perlin Noise

14.6. Perlin Noise
	14. Rendering Filters

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 image window menu under Filters → Render → Noise → Perlin Noise….

Figura 17.340. “Perlin Noise” filter options

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

	Nota
	These options are described in Secção 2, “Common Features”.

Alpha

Low values give sharper noise

Figura 17.341. “Alpha ” option examples

Alpha = 0.300

Alpha = 3.600

Scale

Scale of the noise function: works like a zoom.

Z offset

Vary noise.

Figura 17.342. “Z offset” option examples

Z offset = -1000

Z offset = 0.900

Iterations

The number of noise octaves.

Iterations = 7