14.6. Perlin Noise

14.6. Perlin Noise
	14. 下塗りフィルター

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….

図17.328 「Perlin Noise」 filter options

Presets, Preview, Split view, Use selection as input

	注記
	These options are described in 「Common Features」.

Alpha

Low values give sharper noise

図17.329 「Alpha 」 option examples

Alpha = 0.300

Alpha = 3.600

Scale

Scale of the noise function: works like a zoom.

Z offset

Vary noise.

図17.330 「Z offset」 option examples

Z offset = -1000

Z offset = 0.900

Iterations

The number of noise octaves.

Iterations = 7