User Guide

GNU Image Manipulation Program
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15.4.4 Pick
15.4.4.1 Overview
Figure 15.70: Example of applying the ‘Pick’ filter
(a) Original image (b) Filter Pick applied
You can find this filter through Filters → Noise → Pick.
The Pick filter replaces each affected pixel by a pixel value randomly chosen from its eight neighbours and itself (from a 3×3
square the pixel is center of). All or only some pixels in an active layer or selection are affected, the percentage of affected pixels
is determined by the Randomization (%) option.
15.4.4.2 Options
Figure 15.71: ‘Pick’ filter options
Random Seed Random Seed controls randomness of picking. 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 (%) The Randomization slider represents the percentage of pixels of the active layer or selection which will be
picked. The higher value, the more pixels are picked.
Repeat The Repeat slider represents the number of times the filter will be applied. Higher values result in more picking, pixel
values being transfered farther away.