why GetNeighboringLabels find far neighbor

[tbscer]

hi

in the function IEnumerable GetNeighboringLabels(Pixel pix)

for (int i = pix.Position.Y - 1; i <= pix.Position.Y + 2 && i < _height - 1; i++)

I am not sure why you used this 2 instead of 1, can you pls explain, and I tried with 1, it works too