Scan-to-Pattern Clothing Systems: A Systematic Approach

Abstract

Sizing systems for commercial off-the-rack clothing have historically been based on a mix of tradition, trade secrets and anthropometric data.More recently, large quantities of information from 3D body scanners have become available, creating a new source of data from which off-the-rack clothing can be sized and designed.[We note that some scanning systems are used for made-to-measure or custom garments, and those processes are not the subject of this paper.This paper will also not deal with the direct use of the 3-D image to create patterns without the extraction of dimensions.]With these new, large, datasets available it is worthwhile to review the whole process of how to go from a scanner-produced anthropometric dataset to finished patterns. Validating the scanner and its extraction softwareThe scanner itself should be validated for this particular application.Research has shown that scanners vary in the quality of the scan image, and the amount of missing data (as well as the software tools to estimate the missing data) (Bradtmiller and Gross, 1999, 2003;Chang, 2007; Daanen, 1997a; 1997b; 1997c; Kouchi and Mochimaru, 2006a, 2006b, 2008;2011;Paquette et al., 2000;van Stralen et al., 2003;Suikerbuik et al., 2004).Systems also vary considerably in the algorithms they use to extract the anthropometric dimensions.Leaving aside whether the extracted dimensions are "right" or "wrong", it is important to know whether they are providing the dimensions that the user expects.Ideally, this validation should be done by an independent agency, but at minimum should not be done by the system manufacturer.

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