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Table 2 Curvature subsets

From: Skin injury model classification based on shape vector analysis

Subset

Description

Mean curvature (mc)

S f

Flat

0.17<mc≤0.17

S 0

Strongly convex

mc>0.8

S 1

Highly convex

0.6<mc≤0.8

S 2

Very convex

0.5<mc≤0.6

S 3

Convex

0.4<mc≤0.5

S 4

Slightly convex

0.25<mc≤0.4

S 5

Little convex

0.17<mc≤0.25

S 6

Strongly concave

mc<−0.8

S 7

Highly concave

−0.8≤mc<−0.6

S 8

Very concave

−0.6≤mc<−0.5

S 9

Concave

−0.5≤mc<−0.4

S 10

Slightly concave

−0.4≤mc<−0.25

S 11

Little concave

−0.25≤mc<−0.17

  1. Range of curvature values used for partitioning vertices of our 3D mesh objects into 12 subsets. These are divided in two groups: the first group, S 0,…,S 5, contains sets of convex spots of similar magnitude decreasing along the indices, whereas S 6,…,S 11analogously encompass regions of increasingly concave nature. Vertices pertaining to subset S f of relatively flat regions containing a mean curvature magnitude of |mc|≤0.17 are excluded from further analysis.
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BMC Medical Imaging

ISSN: 1471-2342

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