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Abstract: random needle embroidery (RNE) is a graceful art enrolled in the world intangible cultural heritage. In this paper, we study the stitch layout problem and propose a controllable stitch layout strategy for RNE. Using our method, a user can easily change the layout styles by adjusting several high-level layout parameters. This approach has three main features: firstly, a stitch layout rule containing low-level stitch attributes and high-level layout parameters is designed; secondly, a stitch neighborhood graph is built for each region to model the spatial relationship among stitches; thirdly, different stitch attributes (orientations, lengths, and colors) are controlled using different reaction-diffusion processes based on a stitch neighborhood graph. Moreover, our method supports the user in changing the stitch orientation layout by drawing guide curves interactively. The experimental results show its capability for reflecting various stitch layout styles and flexibility for user interaction.

一种可控的乱针绣针法排布策略

研究目的：乱针绣（random needle embroidery）是列入世界非物质文化遗产的艺术，它融西方绘画技巧与中国刺绣技艺于一体，针法灵活多变，风格独特。采用计算机技术模拟乱针绣风格，对其传承和发展具有重要意义。如何设计有效、可控的针法排布机制是表现乱针绣针法特色以及乱针绣风格模拟的基础。
创新要点：提出一种参数驱动的针法排布策略，通过高层排布参数及反应扩散过程有效实现对绣线方向、长短、颜色的控制。用户通过调整高层参数或绘制简单的草图笔画即可方便地调整针法排布风格。
方法提亮：设计了包含绣线低层属性及高层排布参数的针法排布模型；建立邻域图表示相邻绣线之间的拓扑关系；提出基于邻域拓扑关系及反应扩散过程的针法排布控制策略；给出基于纹理映射及亮度衰减的绣线仿真算法。
重要结论：根据本文提出的针法排布策略，用户只需调整若干高层参数或绘制简单的笔画即可改变针法排布风格。实验结果表现了两方面特性：针法风格表现的多样性及用户交互的便利性。
乱针绣；针法风格；针法排布；针迹邻域图；反应扩散

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