Innovative method for creating fitted brassiere wire prototype based on transformation matrix algorithm

Abstract It has been difficult to obtain the fitted bra wire shape for women’s breasts, since the under breast root shape extracted from 3D bodyscan breast images is three dimensional. A detailed matrix algorithm for the geometric relation is firstly introduced and presented for transferring the 3D bra wire shape to one that is 2D to create a fitted bra underwire shape prototype. In this paper, the under breast root shape was extracted from a medium average avatar, then the curve line was exported as a point format. Points were taken as research subject, then the transformation matrix algorithm was applied to the spatial coordinates of the points to fulfill the transformation. Thereby a detailed program was operated in MATLAB for obtaining the coordinates of points to create the contour for the 2D wire shape. The matrix algorithm method was a useful, simple and straightforward method to implement. In addition, it works well for various kinds of breast shapes.

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