Edge extraction and bottom flattening of shoe last
Hu Anduo · Jiguang zazhi · 2008
This paper discusses the method of shoe last bottom edge extraction based on 3-D surface discrete data and the flattening of bottom surface.Compute the tangent slope of the surface curve using the discrete data,and then find the inflexion by judging the maximum of tangent of the angle of the intersect tangent at every point,finally get the bottom profile.Using the beeline linked two nearby test points to replace the actual curve according the length to compute the curve distance from every inflexion to the middle line which is taken as the linear distance in 2-D plane realizes the flattening of the shoe last bottom profile from 3-D to 2-D.All of results fit the actual shoe last well.