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基于纱线的布料模拟

Efficient Yarn-based Cloth Simulations | Two Minute Papers #166

亲爱的学霸们大家好 这是由Károly Zsolnai-Fehér为大家带来的两分钟论文
Dear Fellow Scholars, this is Two Minute Papers with Károly Zsolnai-Fehér.
这篇论文是有关 基于纱线的联系来创造令人惊叹的布料模拟
This paper is about creating stunning cloth simulations that are rich in yarn-to-yarn contact.
通常来说 这是一个具有挑战性的问题 因为发现和模拟成千上万
Normally, this is a challenging problem because finding and simulating all the possible contacts
相互连接的几何体之间所有可能发生的联系 是一个极其漫长的过程
between tens of thousands of interlinked pieces of geometry is a prohibitively long process.
同时 由于许多不同种类的可能的环路构造 这些联系
Also, due to the many different kinds of possible loop configurations, these contacts can take
需要考虑大量不同的形状
an awful lot of different shapes, which all need to be taken into consideration.
由于在生活中 我们习惯于看到这些布料的摆动
Since we are so used to see these garments moving about in real life, if someone writes
所以 即使编写的模拟器有一点点偏差 我们也会立刻发现它的不同
a simulator that is off just by a tiny bit, we’ll immediately spot the difference.
我想这显而易见是一个非常具有挑战性的问题
I think it is now easy to see why this is a highly challenging problem.
这种技术对模拟过程进行了优化 它仅仅只是计算了纱线相互拉动中
This technique optimizes this process by only computing some of the forces that emerge from
体现出的部分作用力 以及仅仅模拟近似静止状态
these yarns pulling each other, and only trying to approximate the rest.
好消息是 这种近似法利用时间相干性算出
The good news is that this approximation is carried out with temporal coherence.
这意味着这些联系的模型是一直被保留下来的 只有在绝对必要的时候
This means that these contact models are retained through time and are only rebuilt when it
才会被重建
is absolutely necessary.
在这些模拟中被标记为红色的部分 显示发生了显著变形
The regions marked with red in these simulations show the domains that are found to be undergoing
因此我们着重重建这部分的
significant deformation, therefore we need to focus most of our efforts in rebuilding
仿真模型
the simulation model for these regions.
看看这些结果 简直令人难以置信
Look at these results, this is unbelievable.
在这些模拟中会有如此多的细节
There is so much detail in these simulations.
并且这些都在七年前就完成了
And all this was done seven years ago.
在研究和技术中 这就是永恒
In research and technology, this is an eternity.
这让我深受影响
This just blows my mind.
我们也将结果和耗费昂贵的参考技术作比较
The results are also compared against the expensive reference technique as well.
你可以看到差异及其细微 但最新研究对技术进行了改进
And you can see that the differences are minuscule, but the new, improved technique offers a 4
将速度加快了4到5倍
to 5-time speedup over that.
对于我的研究项目 我也亲自运行了许多模拟
For my research project, I also run many of these simulations myself, and many of these
许多任务需要花费几个通宵来完成
tasks take several all nighters to compute.
如果有人说 我的每次通宵现在算作5 我会非常高兴的
If someone would say that each of my all-nighters would now count as 5, I’d be absolutely delighted.
如果您尚未订阅本系列 还请确保这样做
If you haven’t subscribed to the series, please make sure to do so and please also click the
点击铃声图标以免您错过某一集内容
bell icon to never miss an episode.
接下来的几集中我们会为您呈现更多精彩的论文
We have tons of awesome papers to come in the next few episodes.
期待再次与您相约这里!
Looking forward to seeing you there!
感谢您的收看和大力支持 我们下期再见!
Thanks for watching and for your generous support, and I’ll see you next time!

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视频概述

基于纱线的联系,仿真模拟出布料的摆动,掉落等等。

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视频来源

https://www.youtube.com/watch?v=oltKUPTBz9Q

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