Method and system for foot characteristic parameter to drive standard shoe tree to deform

Abstract

The invention relates to a method and a system for foot characteristic parameters to drive a standard shoe tree to deform. The method comprises the following steps: generating a final shoe tree control line; generating a shoe tree surface according to the generated shoe tree control line, and boundary lines and a circumference line in the tree surface region forming the surface of each part; connecting the surfaces based on continuity and smoothness of the surfaces, so that the boundary lines of the adjacent surfaces have the same number of points and orders, and that the adjacent surfaces satisfy second-order continuity on the boundary, and singular points or superfluous inflection points do not exist, and curvature changes between the surfaces being small; meanwhile, joining the surfaceswith each other, stitching the smoothly connected surfaces with a bottom surface of the tree and the mouth surface to form a solid closed integrated body. Thus, a shoe tree model based on the foot picture reconstruction model is obtained, and for the adjusted shoe tree standard model, corresponding adjustment can be made on the reconstructed shoe tree model according to parameter correspondence among different types of standard shoe trees according to different selected footwears, shoe types, and heel heights.

Description

technical field [0001] The invention relates to shoe last model construction technology, in particular to a standard shoe last deformation method and system driven by foot characteristic parameters. Background technique [0002] The human foot is prone to deformation and difficult to be in a static state. If the point cloud data of the foot is obtained using a contact measuring device, the probe of the measuring device will squeeze the instep during the measurement process, deforming the shape of the human foot. When the human foot is damaged, it also causes some errors in the measured human foot point cloud. Moreover, the use of contact measurement equipment requires the human foot to be in a specific position all the time, and the device needs to be used to fix it on the workbench. When measuring, the human foot also needs to move with the workbench. It is difficult for the human foot to achieve these requirements. As a result, many foot feature parameters and some comple...

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing shoe last model reverse reconstruction file formats are point cloud models and NURBS surface models generated by the boundary blending method or facet feature method. Multiple redundant points, large storage space, difficult data management and analysis, which is not conducive to real-time processing of models

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