a large number of pixels and find out where on the brightness/darkness scale those pixels are. • Std Dev (Standard Deviation) is how homogeneous the pixel spike height is in a certain range. It tells can’t control the fractals as you can with the Ifs Compose filter, but you can steer the random generator in a certain direction, and choose from varia- tions of a theme you like. MAIN INTERFACE In the Us e r’s Man u al 5 9 5 C h a p ter 3 9 FRACTAL EXPLORER We will try to explain this fractal generator in a non-mathematical way, so that people who are unfamiliar with advanced mathematics will understand

restricted to the selected range: • Mean : the mean value of the interval in the selected channel. • Std Dev : Standard deviation. Gives an idea about how homogeneous the distribution of values in the interval background color, font size... and background gradient. The ”CSS Save” plugin is a CSS3 linear gradient generator that allows you to save a CSS3 code snippet, containing the gradient data for a given GIMP gradient Preview, Split view These options are common to GEGL-based filters. Please refer to Section 17.2. Std. Dev. Increasing this Standard Deviation lowers the filter threshold and more image details are taken

sides. The option accepts 1 side (!), not 2. Random seed and Randomize • Random Seed: The random generator will use this value as a seed to generate random numbers. You can use the same value to repeat the Randomize: When you click on this button, you produce a random seed that will be used by the random generator. It is each time different. GNU Image Manipulation Program 490 / 653 15.9.4 Lighting Effects can’t control the fractals as you can with the Ifs Compose filter, but you can steer the random generator in a certain direction, and choose from variations of a theme you like. In the main window, you

can't control the fractals as you can with the Ifs Compose filter, but you can steer the random generator in a certain direction, and choose from variations of a theme you like. In the main window, you