This week’s session covered CornerPin 2D use. A moving image can have a picture replaced using the CornerPin 2D node. Its goal is to translate an image sequence’s four corners to a position determined by tracking data, or from that point to the picture sequence. In fact, you may substitute any four-corner feature with a different image sequence using this node. It might be used, for instance, to display a picture on a television.The tracker node can be used to generate four tracks on the feature that has to be replaced, one for each corner, for the picture to be replaced. After that, CornerPin 2D receives the data from the tracker nodes and connects it to the material that is being changed.