GIMP tools - BDA

GIMP 182
What makes this filter interesting is that the blur effect is limited to conditionally
monotonous areas rather than a full image. Only the pixels that belong to the groups of
the same colour are blurred. If the image contains a single more pronounced element, a
relatively monotonous background rather than this element will become blurred. This
filter is applied when a single element of the image needs to be highlighted.
How to use this filter?
Open the image that contains a single more pronounced object in the
monotonous background;
Select FiltersBlurSelective Gaussian Blur command. It opens the Selective
Gaussian Blur dialog box
Note!
Set the following parameters:
• Blur radius – control blur intensity. The higher the radius value, the stronger
the blur effect;
• Max. delta – determine filter sensitivity level in respect of the differences in
pixel colours. Reduce the value of the this parameter in case the edges of
the main element are excessively pronounced and significantly differ from
the background colour; slightly increase it in case the difference is marginal.
Press OK.
After applying the filter, the image background gets blurred and the objects in the
foreground as if separate from it, thus rendering the depth effect.
Pixelize
This filter approximates the low resolution effect, i.e. by increasing pixels the image gets
blurred. We know that each image is composed of tiny pixels. This filter, otherwise
known by the name of Abraham Lincoln, essentially enlarges the pixels of the image,
thus creating the blur effect.
How to use this filter?
1. Open an image or a photograph.