Color Extraction filter

This filter retains the colors with hue, luminosity and saturation close to specified ones, while all other colors are replaced with the user selected color.

Configuration of this filter is similar to Color Dropping filter configuration.

You can use the eyedropper tool for selecting desired color right from the preview window.

Preview windows controls

Option Description
Auto preview If this check box is selected, preview image will be recalculated every time you make a change in the dialog settings. If this box is unchecked, all changes you made will be calculated after you click the Preview button.
Quick view If you are performing filter configuration on a large image file it is advised to check this box to speed up image processing calculation. The program will choose the optimal processing algorithm.