纤维尺度下数码纱仿真方法

Digital yarn simulation under fiber scale

为解决因配色复杂多变,数码纱外观难以直观预测的问题,提出基于纤维单元的模拟方法,用于实现数码纱外观的仿真。依据纤维原料颜色数值,构建纤维级别的纹理模型;根据纺纱工艺参数计算数码纱上的区域色块参数,构建色块排列模型;利用不同组分纤维间渐变规律,同时结合光照模型仿真亮度信息构建颜色渐变模型;采集真实数码纱的直径数据,仿真纱线的直径形态。实验中分别保持颜色和组分不变,模拟出不同组分和颜色的数码纱。结果证明所提出的纱线仿真方法可较快地模拟出数码纱的外观,并且与实际数码纱的外观视觉十分接近,为数码纱的设计开发以及织物仿真奠定了基础。

In order to solve the problem on difficult prediction of digital yarn appearance caused by the complicated color matching of yarn,a simulation method based on fiber unit was presented to complete the simulation of digital yarn. First of all,the texture model of fiber was constructed based on the raw material color values of digital fiber. Secondly,digital yarn appearance area color piece based on the spinning process parameters were calculated. Thirdly,the gradient model was built by using the principle of gradual changes between different components and combining with lighting model simulation luminance information. Finally,the real digital yarn diameter and profile were collected. It can simulate the different components and color of digital yarn keeping the color and composition unchanged. The results show that the proposed yarn simulation method can simulate the appearance of the digital yarn quickly,and the appearance of the vision is very close to the actual digital yarn,laying a solid foundation for the development of digital yarn and fabric simulation.