Sequence for Band 1 ---------------------- Dilation SE6 Dilation SE6 Dilation SE8 Dilation SE2 Erosion SE6 Erosion SE6 Erosion SE8 Erosion SE2 Sequence for Band 2 ---------------------- Dilation SE4 Dilation SE8 Dilation SE5 Dilation SE1 Erosion SE4 Erosion SE8 Erosion SE5 Erosion SE1 Sequence for Band 3 ---------------------- Dilation SE1 Dilation SE4 Dilation SE6 Dilation SE3 Erosion SE1 Erosion SE4 Erosion SE6 Erosion SE3 Color Change Rule ------------------ [[0, 0, 0, 0], [0, 0, 1, 2], [0, 1, 0, 1], [0, 1, 1, 3], [1, 0, 0, 2], [1, 0, 1, 3], [1, 1, 0, 2], [1, 1, 1, 2]]