Shape Adaptive Cut Lines Matteo Colaianni 1 , Christian Siegl 1 , Jochen Süßmuth 2 , Franz Rott 2 and Günther Greiner 1 1 Computer Graphics Group - University of Erlangen-Nuremberg 2 Adidas Group Figure 1: A template garment is attached to a statistical shape model. Deforming the Avatar along the first two principal directions leads to adapted cloth patches. Abstract We present a novel method to express base layer and compression garments directly coupled to a human body geometry. Our system enables the transfer of a previously defined patch configuration from a virtual template avatar to arbitrary input bodies. A complete pipeline for the virtual development of second skin garments is presented. The system’s strength is the transparent usage for two important scenarios in the apparel industry. On the one hand grading for a population is presented using body shape statistics without using any measurements and on the other hand an approach for custom garment creation in a made- to-shape fashion is proposed. Categories and Subject Descriptors (according to ACM CCS): I.3.3 [Computer Graphics]: Line and curve generation—I.3.5 [Computer Graphics]: Curve, surface, solid, and object representation— 1. Introduction With the increasing availability of CAD software for apparel de- velopment and new fabrication methods, virtual prototyping and design becomes increasingly important. Reduced time frames and costs are the result of a virtual work environment. A variety of pro- cess steps in apparel design and development are well covered by existing virtualization solutions. There exist technologies for body shape acquisition, analysis, the virtual assembly of color ways and even the construction of garments. In contrast, the process of pat- tern grading is still manual work that requires lots of expertise and empirical knowledge. Grading represents the process of adapting a garment to various body sizes. This involves the statistical analysis of a target population and the development of measurement transi- tion tables. To tackle the complex process of describing a human body’s shape, its definition usually is reduced to a set of 1D mea- surements. This can be seen as a heavy under sampling, leading to a significant loss of shape information. In addition, rules regarding ratios have to be taken into account. Developing a pattern based on measurements will always imply interpolation and may lead to approximation errors and – as a consequence – garments that do not fit. Using the surface as body shape description leads to an uni- fied representation without the mentioned loss of information. Al- though, the acquisition of the body surface is not as accessible as taking measurements with a tape, a shape based garment grading is shown to be superior to a measurement based approach. To inte- grate the shape based paradigm back into the traditional work flow, c  2016 The Author(s) Eurographics Proceedings c  2016 The Eurographics Association. Eurographics Workshop on Graphics for Digital Fabrication (2016) A. Medeiros e Sá, N. Pietroni, and K. Rodriguez Echavarria (Editors) DOI: 10.2312/gdf.20161078