Characterization of Visual Scanning Patterns in Air Traffic Control

Procedure 2

Identifying circular scanpaths.

INPUT Fundamental IGS

OUTPUT Circular scanpath

Let the center of the screen be the origin.

Let 0° be assigned in reference to the first eye fixated target ().

Let be an indicator for sequential eye fixations where .

Let be a counter variable where .

Step  1. Assign each subsequent eye fixated target a degree value (, where ) in reference to the clockwise direction

from .

Step  2. Increment for each sequential increase in (where ), then go to Step  4.

Step  3. Increment if the next value is , then continue to increment for each sequential decrease in (where ), then

go to Step  4.

Step  4. If , then the pattern is labeled circular.