Sequence for Band 1 ---------------------- Dilation SE8 Dilation SE8 Dilation SE2 Dilation SE5 Erosion SE8 Erosion SE8 Erosion SE2 Erosion SE5 Sequence for Band 2 ---------------------- Dilation SE7 Dilation SE3 Dilation SE7 Dilation SE1 Erosion SE7 Erosion SE3 Erosion SE7 Erosion SE1 Sequence for Band 3 ---------------------- Dilation SE3 Dilation SE7 Dilation SE6 Dilation SE6 Erosion SE3 Erosion SE7 Erosion SE6 Erosion SE6 Color Change Rule ------------------ [[0, 0, 0, 0], [0, 0, 1, 2], [0, 1, 0, 2], [0, 1, 1, 3], [1, 0, 0, 3], [1, 0, 1, 3], [1, 1, 0, 1], [1, 1, 1, 2]]