You can use the Edge Detect effect to create a highlighted outline of your image. After creating a black image, the effect uses colored lines to outline the detail of an image where significant color differences exist. Greater differences between colors in the original image produce brighter outline colors. (The Sobel effect is similar to the Edge Detect effect, but produces sharper and brighter outlines.)
To use the Edge Detect effect:
- In Edit mode, in the Add group, click Special Effect.
- Click Edge Detect.
- Do one of the following:
- Click Done to accept your changes and close the pane.
- Click Cancel to discard your changes and close the pane.