How to work with Trace Contour

84) How to work with Trace Contour.

Finds the transitions of major brightness areas and thinly outlines them for each color channel for an effect similar to the lines in a contour map.

Step 1

Select the area to work with Trace Contour filter.

Step 2

Choose an Edge option to outline areas in the selection: Lower outlines where the color values of pixels fall below the specified level; Upper outlines where the color values fall above. Enter a threshold (Level) for evaluating color values (tonal level), from 0 to 255. Experiment to see what values bring out the best detail in the image.

Step 3

After applying with the Trace Contour filter.