GIMP tools - BDA

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3. Set the following parameters:
Use the slider of the Luminosity threshold scale to select the luminosity
threshold of the sparkling elements. The higher the value, the more sparkling
the elements will be;
Use the slider of the Flare intensity scale to set the intensity of the flare. To
increase the flare intensity, increase the value;
Use the slider of the Spike length scale to specify the spike length; the higher
the value, the longer the spikes;
Use the slider of the Spike point scale to select the number of the sparkle spike
points;
Use the slider of the Spike angle (1: random) scale to select the sparkle spike
angle by simultaneously changing the spike direction angle. When the value is
set to (-1), the inclination angle will be selected by the program;
Use the slider of the Spike density scale to select the number of sparkles. The
higher the value, the more sparkles there will be;
Use the slider of the Transparency scale to specify whether sparkling will be
transparent, half-transparent, white, etc.;
Use the Random hue slider to change the sparkle colour randomly;
Use the Random saturation slider to change the sparkle saturation at random;
There are three checkboxes:
• If the Preserve luminosity checkbox is checked, luminosity is preserved;
• If the Inverse checkbox is checked, black pixels in the image become
sparkling (in black);
• If the Add border checkbox is checked, a border is added to the image;
There are three radio buttons for choosing the sparkle colour: