14.6. Perlin Noise

14.6.1. Overview

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. Activating the Filter

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

14.6.3. Options

Рисунок 17.347. «Perlin Noise» filter options

«Perlin Noise» filter options

Presets, «Input Type», Clipping, Blending Options, Preview, Merge filter, Split view
[Примітка] Примітка

These options are described in Розділ 2, «Common Features».

Alpha

Low values give sharper noise

Рисунок 17.348. «Alpha » option examples

«Alpha » option examples

Alpha = 0.300

«Alpha » option examples

Alpha = 3.600


Scale

Scale of the noise function: works like a zoom.

Z offset

Vary noise.

Рисунок 17.349. «Z offset» option examples

«Z offset» option examples

Z offset = -1000

«Z offset» option examples

Z offset = 0.900


Iterations

The number of noise octaves.

Iterations = 7