-purpose "Erode a binary image to decompose into different labels, keeping a record of the eroded regions (erosion padding value). Dilate all labels of a label image separately, only dilating the marked regions (erosion padding value)."
+purpose "Decompose through erosion, and reconstruct through dilation. Erode a binary image to decompose into different labels, keeping a record of the eroded regions (=erosion padding value). Dilate all labels of a label image separately, only dilating the marked regions (erosion padding value)."