Controls

Select:

Sample Color

Selects a color to base the selection upon.

Tolerance (0 – 511)

Relaxes the standards on which colors will be included in the selection by their relationship to the Blur Color. The highest value will select the entire image, regardless of what color is selected

Edge Softness (0 – 255)

Includes gray values in the selection, this is similar to increasing Tolerance, but similar colors are represented by a shade of gray equal to their proximity to the Blur Color. Often, increasing Edge Softness means the Tolerance setting can be reduced to maintain a selected area.

Invert

Reverses the selection.

Modify Selection:

Blur Selection (0 – 150)

Blurs the selection.

Threshold (0 – 255)

Applies a threshold operation to the selection. If the selection has been blurred, thresholding can grow or shrink the selection by darkening or lightening gray values.

Steps (0 – 255)

Values of posterization between black and white while thresholding. See Joe’s Threshold and Posterize for more on thresholding and posterization.

Apply:

Use (Color, Image)

This determines whether the filter will fill the selection with the selected color, or with a copy of the original image.

Fill Color

The color which will fill the selected area when Use: Color is selected.

Blur (0 – 255)

This blurs both the mask and the fill, prior to compositing.

Mode and Opacity

Compositing controls to apply the masked element back to the original image.