12.3. Solid Noise

Overview

Example of turbulent solid noise.

This filter is found in Image>Filters/Render/Clouds/Solid Noise...

Solid Noise is a great texture maker. Note that this noise is always gray, even if you applied it to a very colorful image (it doesn't matter what the original image looks like -- this filter completely overwrites any existing background in the layer it is applied to). This is also a good tool for creating displacement maps for the plug-in or for the plug-in. With the "turbulence" setting active, the results look quite a bit like real clouds. An example is shown below.

Pevný šum je výborný prostředek pro tvorbu textur. Jím vytvořený šum je vždy ve škále šedé, a to i tehdy, pokud je filtr aplikován na barevný obrázek (filtr existující vrstvu či výběr zcela přepíše, vůbec nebere obrazovou informaci z ní v potaz). Je to také dobrý nástroj pro tvorbu map pro filtry Mapa vyvýšení a Warp . Je-li aktivní volba "turbulentní", připomíná výsledek skutečné mraky. Příklad je ukázán níže.

Options

Random Seed

Random Seed controls random behaviour of the filter. If the same random seed in the same situation is used, the filter produces exactly the same results. A different random seed produces different results. Random seed can be entered manually or generated randomly by pressing New Seed button.

When the Randomize option is checked, random seed cannot be entered manually, but is randomly generated each time the filter is run. If it is not checked, the filter remembers the last random seed used.

Turbulent

If you check this, you'll get very interesting effects, often something that looks much like oil on water, or clouds of smoke, or living tissue, or a Rorschach blot.

Detail

This controls the amount of detail in the noise texture. Higher values give a higher level of detail, and the noise seems to be made of spray or small particles, which makes it feel hard. A low value makes it more soft and cloudy.

Tileable

If you check Tileable, you'll get a noise which can be used as tiles. For example, you can use it as a background in an HTML page, and the tile edges will be joined seamlessly.

X and Y Size

These control the size and proportion of the noise shapes in X (horizontal) and Y (vertical) directions (range 0.1 to 16.0).