FAQ - Aperture
Shape Masking Tool
Multi-Polygon Tools for Masking
The Shape, or Polygon tool as it is called, is used to clean up the AI Mask when the machine learning did not get it quite right. There are three polygon modes: Fill, Erase, and Cut out. Fill and Erase apply inside the selected polygon and leaves the area outside as is. Cut Out leave the inside of the polygon as is and erases outside of it. Users can draw more than one polygon at a time while cleaning up masks. This makes it easier and faster to clean up masks on items with cutouts. In draw mode use control/command + click to start a new polygon.