云纹纱纬编针织物外观模拟
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摘要
云纹纱颜色渐变,对应的布面颜色难以直观预测,需要通过打小样来预测布面效果,但这种方式耗时、费力、增加成本。为解决此问题,文章提出一种应用真实云纹纱图像的针织物外观模拟方法,可以快速、直观、准确地预测云纹纱织物的布面颜色。首先利用图像分割、形态学开运算和闭运算等图像处理技术对采集到的云纹纱图像进行处理,得到原始纱线图像主体部分;然后利用改进的Peirce线圈模型,将真实云纹纱线纹理映射至线圈的几何模型上;最后调整线圈的串套关系,完成织物外观的模拟。模拟结果显示,模拟的织物与实际织物扫描图像颜色纹理相近,外观效果逼真。
Cloud yarn is of gradient color. It is difficult to predict cloth color intuitively,and it is needed to predict the effect of cloth by means of making samples. But this approach is time-consuming,laborious and costly. In order to solve this problem, a method of appearance simulation of knitted fabric based on real cloud yarn image information,with which fabric color of cloud yarn fabrics can be predicted quickly,intuitively and accurately. The procedure is as below. Firstly,collected cloud yarn images are processed with image processing techniques such as image segmentation,morphological opening and closing operations to obtain the main part of original yarn image;secondly,real cloud yarn texture is mapped to geometric model of loop with improved Peirce loop model; thirdly,the string relationship of loop is adjusted to complete appearance simulation of fabric. Simulation result shows that the simulated fabric is similar to scanned image of real fabric in respect of color and texture,and the appearance effect is realistic.
Cloud yarn is of gradient color. It is difficult to predict cloth color intuitively,and it is needed to predict the effect of cloth by means of making samples. But this approach is time-consuming,laborious and costly. In order to solve this problem, a method of appearance simulation of knitted fabric based on real cloud yarn image information,with which fabric color of cloud yarn fabrics can be predicted quickly,intuitively and accurately. The procedure is as below. Firstly,collected cloud yarn images are processed with image processing techniques such as image segmentation,morphological opening and closing operations to obtain the main part of original yarn image;secondly,real cloud yarn texture is mapped to geometric model of loop with improved Peirce loop model; thirdly,the string relationship of loop is adjusted to complete appearance simulation of fabric. Simulation result shows that the simulated fabric is similar to scanned image of real fabric in respect of color and texture,and the appearance effect is realistic.
引文
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[2]高娜,李强,徐伯俊,等.云纹花色纱的纺制及性能分析[J].丝绸,2017,54(5):24-28.GAO Na,LI Qiang,XU Bojun,et al.Moire fancy yarn spinning and its performance analysis[J].Journal of Silk,2017,54(5):24-28.
[3]祝成炎.计算机模拟织物外观的一种方法研究[J].丝绸,1996(6):41-43.ZHU Chengyan.A research on the computer simulation of fabric appearance[J].Journal of Silk,1996(6):41-43.
[4]沙莎,蒋高明.纬编针织物三维模拟技术的研究现状与发展趋势[J].纺织学报,2016,37(11):166-172.SHA Sha,JIANG Gaoming.Research status and development trend of 3D simulation technology for weft knitted fabric[J].Journal of Textile Research,2016,37(11):166-172.
[5]于斌成,李柏岩,刘晓强,等.一种增强模拟纬编针织物外观真实感的方法[J].东华大学学报(自然科学版),2013,39(5):644-649.YU Bincheng,LI Baiyan,LIU Xiaoqiang,et al.A method to improve the sense of reality of simulated weft knitted fabric appearance[J].Journal of Donghua University(Natural Science),2013,39(5):644-649.
[6]张继东,薛元,张杰,等.应用混色纱纹理信息的纬编针织物模拟[J].纺织学报,2017,38(7):148-154.ZHANG Jidong,XUE Yuan,ZHANG Jie,et al.Weft knitted fabric simulation using mixed color yarn texture information[J].Journal of Textile Research,2017,38(7):148-154.
[7]李忠健,潘如如,高卫东.应用纱线序列图像的电子织物构建[J].纺织学报,2016,37(3):35-40.LI Zhongjian,PAN Ruru,GAO Weidong.Automatic construction of digital woven fabric using sequence yarn images[J].Journal of Textile Research,2016,37(3):35-40.
[8]张宁,李忠健,潘如如,等.采用色纺纱图像的真实感色织物模拟[J].纺织学报,2017,38(5):37-42.ZHANG Ning,LI Zhongjian,PAN Ruru,et al.Simulation of realistic yarn-dyed fabric using colored spun yarn images[J].Journal of Textile Research,2017,38(5):37-42.
[9]吴周镜,宋晖,李柏岩,等.纬编针织物在计算机中的三维仿真[J].东华大学学报(自然科学版),2011,37(2):210-214.WU Zhoujing,SONG Hui,LI Boyan,et al.3D simulation of weft knitted fabric in computer[J].Journal of Donghua University(Natural Science),2011,37(2):210-214.
[10]王辉,方园,潘优华.纬编针织物线圈模型的分析与研究[J].浙江理工大学学报,2008,25(5):521-525.WANG Hui,FANG Yuan,PAN Youhua.Analysis and research on the weft knitted fabrics’loop model[J].Journal of Zhejiang Sci-Tech University,2008,25(5):521-525.
[11]居婷婷.毛衫织物线圈结构建模与仿真研究[D].杭州:浙江理工大学,2012:30-35.JU Tingting.Structure Modeling and Simulation of Sweater Fabric Loop[D].Hangzhou:Zhejiang Sci-Tech University,2012:30-35.
[12]KALDOR J M,JAMES D L,MARSCHNER S.Simulating knitted cloth at the yarn level[J].ACM Transactions on Graphics,2008,27(3):1-9.