“…Hence, the relationship between the rectangles given by ( P
x 0 , P
y 0 ), ( P
x 1 , P
y 1 ), ( P
x 2 , P
y 2 ), and ( P
x 3 , P
y 3 ) and ( O
x 0 , O
y 0 ), ( O
x 1 , O
y 1 ), ( O
x 2 , O
y 2 ), and ( O
x 3 , O
y 3 ) can be given by a geometric transform matrix, as shown in (1). The final gaze position can be calculated using this matrix and the detected pupil and corneal SR centers, as given by (2) [14, 30, 31]. …”