The Extract line icon is another icon under the Effect options in the Layer Property palette. This option is especially useful for incorporating 3D objects into your art.
In the following screenshot, I have taken a photo of a horse and used the Extract line effect on it. The settings used are shown in the Layer Property palette, and also in the following screenshot:
Using this option turns the photo into a line drawing. By adjusting the options in the Layer Property palette, we get a real-time preview of the line drawing. Using this layer effect does not change the source photo permanently, as the effect can be turned off at any ...
