Outlining areas based on color value
With the Trace Contour filter, you can outline image areas that bor-
der a particular color. This filter makes color outlines if you are
working with a color image, and black outlines if you are working
with a Grayscale mode image.
To use the Trace Contour filter
1
Select one or more paint objects to adjust all the images. You
can select an area in one image in edit mode to adjust the selected
area only. If you dont make a selection, the entire image in edit
mode is affected. This command doesnt work with paint objects in
Black & White mode, and Indexed mode.
2
Choose Image > Filter > Stylize > Trace Contour.
3
Enter a Level value from 0 to 255. The Trace Contour filter
uses this color brightness value to determine the areas to trace.
4
Select Upper or Lower in the Edge area. To outline areas with
higher brightness levels than the one specified, choose Upper.
Choose Lower to outline areas with lower brightness levels.
5
To see the effect of the settings, turn on Preview. When the set-
tings are correct, click OK.
Original
Solarized
Original
Level =169
Edge = Lower
Level =169
Edge = Upper