6.6. Slur

6.6.1. Overview

Figure 16.132. Example of applying the Slur filter

Example of applying the Slur filter

Original image

Example of applying the Slur filter

Filter Slur applied

Slurring produces an effect resembling melting the image downwards; if a pixel is to be slurred, there is an 80% chance that it is replaced by the value of a pixel directly above it; otherwise, one of the two pixels to the left or right of the one above is used. All or only some pixels in an active layer or selection are affected, the percentage of affected pixels is determined by the Randomization (%) option.

6.6.2. Activate the filter

You can find this filter through FiltersNoiseSlur.

6.6.3. Options

Figure 16.133. Slur filter options

Slur filter options

Random seed

It controls randomness of slurring. 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.

Randomization (%)

This slider represents the percentage of pixels of the active layer or selection which will be slurred. The higher value, the more pixels are slurred, but because of the way the filter works, its effect is most noticeable if this slider is set to a medium value, somewhere around 50. Experiment with it and try for yourself!


This slider represents the number of times the filter will be applied. Higher values result in more slurring, moving the color over a longer distance.