BS ISO 20947-2:2020 pdf download

BS ISO 20947-2:2020 pdf download

BS ISO 20947-2:2020 pdf download.Performance evaluation protocol for digital fitting systems — Part 2: Virtual garment
1 Scope
This document specifies a method for describing the functions and the method for evaluating the performance of the virtual garment pattern cutting and clothing simulation modules of digital fitting systems. This document is applicable to fashion designers and pattern technologists (makers) for generating virtual garment patterns, and testing them on a virtual fit mannequin (fit form).
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1 General
3.1.1 digital fitting system
simulation of a virtual garment pattern or virtual garment over a virtual fit mannequin (fit form) (3.1.2) providing qualitative and/or quantitative evaluation of the fit through analysis of the distribution of,among other things, surface strain, gap between body and garment, tension map, cross section, surface wrinkles, garment balance
3.1.2 virtual fit mannequin (fit form)
model used for draping and examining silhouette and fit of a garment in a virtual space used for digital fitting
3.1.3 virtual garment
three-dimensional clothing in digital form that exists in virtual space
3.1.4 virtual garment pattern
shapes consisting of straight lines and closed curves that mark the area of a digitized pattern used on the virtual garment (3.1.3)
Note 1 to entry: Each pattern consists of a contoured and multiple internal lines, which are used to express seams, internal openings, fold lines, and other garment characteristics.
3.1.5 clothing simulation
creation and drape simulation of a virtual garment on the virtual human body using a virtual garment pattern (3.1.4), virtual sewing and bounding volume
3.1.6 material properties
physical properties of material, including tensile modulus, bending rigidity, shear resistance,thickness, weight
Note 1 to entry: These can be simulated for virtual fabrics using cloth simulation models.
Note 2 to entry: See Annex C.
3.1.7 sewing information
information necessary to construct a virtual garment from virtual garment patterns, including seam lines, specific points on a virtual garment pattern such as positions of snaps, hooks, and buttons, notch marks, grain line, and layer information
3.2 Lines on virtual pattern and their lengths
3.2.1 Upper pattern hem line
line at the hem of front bodice or back bodice
Note 1 to entry: See Figure 1. Length of the front hem line, length of back hem line, and total length are measured.