ArcScan allows you to preview the vectorization prior to generating features. This functionality provides a way for you to test the vectorization settings and view the results without having to create features, which can help save you time.
When the Show Preview command is checked, preview features continue to display after you zoom or pan. You can change the preview symbology on the Vectorization Options dialog box.
- Click the Vectorization menu on the ArcScan toolbar.
- Click Show Preview.
A check mark indicates that the Show Preview command is active.