基于草绘的服装衣片设计

Sketch-based garment pattern design

草图设计一直是服装设计师的主要表达方式,寥寥几笔便可将清新飘逸的服装跃然纸上,方便设计师捕捉稍纵即逝的设计灵感。将传统的草绘设计与计算机辅助技术结合起来,采用笔式交互方式得到二维服装衣片的轮廓线,然后对草绘衣片轮廓线进行自动分段识别与处理,获得衣片轮廓的点、边和衣片结构信息。在此基础上采用插值方法生成衣片轮廓上和轮廓内的点,并采用改进的Delaunay三角化方法对服装衣片进行三角剖分,最后通过纹理映射方法添加布料纹理,以增进服装衣片的真实感效果。研究结果表明,所提出的算法简单高效,能够提高服装衣片表达的效率,并且为进一步的衣片虚拟缝合和穿着展示奠定了基础。

Sketching is the initial design tool for garment design. The designer can rapidly express his （or her） design ideas by sketching some strokes of garments on paper. In this paper the conventional sketch-based design method by paper and pencil and the modern computer aided design method are combined. A sketch-based garment pattern design system, dubbed ClothDesign, is developed. Firstly, the contour of the garment pattern is sketched by pen-based interaction mode. Secondly, the sketching contour is segmented and reconstructed automatically. Some key information, such as vertexes data, edges data and pattern structure information of the sketching garment pattern, is obtained. The interpolation points on the contour of the sketching garment pattern and inside the contour are generated by using the interpolation method. Thirdly, the triangular meshes are generated by using the improved Delaunay triangulation algorithm. Finally, the texture is added on the triangular meshes of the garment pattern in order to improve the reality of the garment pattern. Some examples verified the high efficiency of the proposed algorithms. The sketching design garment pattern can be directly used in the next virtual stitching and garment show stages.