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International Journal of Interdisciplinary Research

Table 2 Definition of reference lines

From: Automation of 3D average human body shape modeling using Rhino and Grasshopper Algorithm

  Primary reference line Secondary reference lines Landmarks to create reference lines
Horizontal lines W1: Waist line   Waist point (waist height measurement available in the SizeUSA data)
W2 The bisecting point between W1 and A1
A1: Abdomen line   Abdomen point (abdomen height measurement available in the SizeUSA data)
A2, A3, A4 Points dividing the space between A1 and H1 into four
H1: Hip line   The most protruding point of the lower body on the back (automatically detected by the algorithm that was designed in this study)
H2, H3 Points dividing the space between H1 and T1 into three
T1: Thigh line   The point 1 inch below the crotch (calculated using crotch height measurement available in the SizeUSA data)
T2, T3, T4 Points dividing the space between T1 and K1 into four
K1: Knee line   Knee point (knee height measurement available in the SizeUSA data)
K2, K3, K4 Points dividing the space between K1 and N1 into four
N1: Ankle line   The point of the thinnest circumference of the leg (automatically detected by the algorithm that was designed in this study)
Vertical lines F1: Center front line   The front bisection point of the waist width
F2, F3 Points dividing the space between F1 and FC1 into three
FC1: Front crease line   The front bisecting point between I1 and S1 at the thigh position
FC2, FC3 Points dividing the space between FC1 and S1 into three
S1: Outseam line   The bisection point of the waist depth, and the bisection point of the ankle depth on the outer side of the leg
  BC2, BC3 Points dividing the space between BC1 and S1 into three
BC1: Back crease line   The back bisecting point between I1 and S1 at the thigh position
B2, B3 Points dividing the space between B1 and BC1 into three
B1: Center back line   The back bisecting point of the waist width
I2, I3 Points dividing the space between I1 and B1 into three
I1: Inseam line   The crotch point and the bisection point of the ankle depth on the inner side of the leg