"Effect: Outline" dialog box

Used to detect the outline of an image. This effect works by detecting those areas in an image where the brightness changes greatly. This is recognized as being the outline of the subject of the image. The outline is drawn in RGB colors.

[Direction] field

You can specify the direction of the incident light with an integer between 0 and 7. The direction is specified by dragging the mark, provided in the dialog preview display.

[Color] button

When this option is selected, RGB colors are used to draw the outline. When this option is not selected, the outline is drawn using monochrome colors. The default is off.