Fig. 5

In a and b, red curves represent the contracted border. a The curve set shows that the LSP can obtain quantitatively accurate results. b The curve set shows the DS still suffers from high curvatures and cannot offer constant distance from the original curve. c shows that the DS yields a deficient data collection along the layer where the abruptness is searched. Yellow brushes indicate that not equal amount of territory considered for feature extraction in spanning windows. Note that, these regions are masked using polygon intersection operations prior to feature extraction. d shows that the constant velocity LSP imbues equalization of data amount during feature extraction