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 don’t make a selection, the entire image in edit mode is affected. This command doesn’t 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
Canvas 8 Help: Image filters and effects (4 of 20)                                                  Page #710