Turn Policy: Vectorize: Trace

Turn Policy denotes the decision making process used to calculate Paths when converting an Image into a Vector format.

Paths are calculated by moving along the edges between the image's pixels.

Each time a corner is encountered, the Path either goes straight, turns left or turns right, depending upon the colors of the surrounding pixels. 

Turn Policy is used to decide between Left or Right Turns.

Changing the turn policy may help improve the outcome if modifying the other adjustments aren't giving the desired result.

Select the desired Turn Policy from the dropdown control.

• Minority: Minority prefers to connect the color (black or white) that occurs least frequently within the surrounding area of the current position.

• Majority: Majority prefers to connect the color that occurs most frequently.

• Right: Right always takes a right turn.

• Black: Black prefers to connect black components.

• White: White prefers to connect white components.

The default turn policy is Minority.

The Black and White policies also look at the original pixel colors, which may have been inverted, to determine the direction of the turn.

After all of the Paths have been drawn and have been completed into closed paths, then the algorithm can then move onto the next step of Tracing the design.