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针织服装建模方法 – 译学馆
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针织服装建模方法

Modeling Knitted Clothing | Two Minute Papers

亲爱的学霸们大家好 这里是由Károly Zsolnai-Fehér带来的两分钟论文
Dear Fellow Scholars, this is Two Minute Papers with Károly Zsolnai-Fehér.
不久之前 我们刚刚介绍过一种可以让我们实时呈现
Not so long ago, we talked about a technique that enabled us to render stunningly high
超高质量的布料模型的技术
quality cloth models in real-time.
它支持细节层次 自阴影 和很多其他的特性
It supported level of detail, self shadowing, and lots of other goodies that make computer
这使得电脑游戏玩家 当然 还有我 都非常高兴
game developers, and of course, my humble self super happy.
今天 为了我们的数字化人物 我们将介绍一种 为这种高细节布料
And today, we’re going to talk about a technique that is able to create these highly detailed
创建出几何形状的技术
cloth geometries for our digital characters.
几年前 我去瑞士参加了奥斯卡获奖者 史蒂夫·马瑟纳 关于这篇论文的讲座
I have really fond memories of attending to the talk of the Oscar award winner Steve Marschner
那是一次非常愉快的经历 我记得当时我听得如痴如醉
on this paper a few years ago in Switzerland, and I remember being so spellbound by it that
那是我永远也不会忘记的一天
I knew this was a day I will never forget.
我相信你也会喜欢它的
I am sure you’ll love it too.
这篇论文的工作 是创建出一个数字化的服装模型 使其在细节上
In this piece of work, the goal is to create a digital garment model that is as detailed
尽可能的接近现实
and realistic as possible.
首先 我们输入一个三维几何形状 让其呈现出大概的模特外形
We start out with an input 3D geometry that shows the rough shape of the model, then,
接着 我们选择一种针织图案
we pick a knitting pattern of our choice.
然后 移动针织图案上的节点 让它们刚好贴合
After that, the points of this knitting pattern are moved so that they correctly fit this
之前建好的三维几何形状
3D geometry that we specified.
接下来就是最酷的部分了!
And now comes the coolest part!
到目前为止 我们所建立的的都是一种特定模型 它看起来和表现起来
What we created so far is an ad-hoc model that doesn’t really look and behave like a
都和真实布料并不像
real piece of cloth.
为了弥补这一点 我们对这个特定模型 做了一个基于物理的模拟
To remedy this, a physics-based simulation is run that takes this ad-hoc model and the
模拟结果将会使这些纺线曲线 呈现出现实中的静止形状
output of this process will be a realistic rest shape for these yarn curves.
而且在这里 你能见证到模拟力是如何将整件衣服连接在一起的
And here you can witness how the simulated forces pull the entire piece of garment together.
我们从希望完成一片布料的几何形状开始着手 通过模拟
We start out with dreaming up a piece of cloth geometry, and this simulator gradually transforms
慢慢地使它接近现实世界里的样子
it into a real-world version of that.
这一步 我们称之为纺线层的松弛
This is a step that we call yarn-level relaxation.

Wow.
最终的结果 不仅仅从外观上看起来棒极了 而且在物理模拟中 它们的行为表现
These final results not only look magnificent, but in a physical simulation, they also behave
也和真实的衣服很像
like real garments.
这样的结果实在是让人开心
It’s such a joy to look at results like this.
太喜欢了
Loving it.
重申一次 我要强调我们要讨论的并不是衣物的视觉化
Again, I would like to note that we’re not talking about the visualization of the garment,
而是创造一件真实的衣物
but creating a realistic piece of geometry.
这个技术最明显的缺点就是计算时间 –
The most obvious drawback of this technique is its computation time – it was run on a
哪怕在很昂贵的系统上模拟 仍然需要几个小时的计算才能完成
very expensive system and still took several hours of number crunching to get this done.
然而 我还没有看到任何人在显卡上实现这个模拟 所以
However, I haven’t seen an implementation of this on the graphics card yet, so if someone
假如 有人能提出一个高效的办法去实现它 那么在理想的情况下 我们也许只需要
can come up with an efficient way to do it, in an ideal case, we may be able to do this
几分钟就能完成所有的计算
in several minutes.
我还必须强调的一点是 如果你不去看一下我这里所说的这篇论文
I also have to notify you about the fact that it is considered a crime not having a look
那一定会让你抱憾终身
at the paper in the video description.
仅仅说这篇论文写得很好是远远不够的 它的表述是如此精彩
It does not suffice to say that it is well written, it is so brilliantly presented, it’s
它真的是一件每个人都应该要看看的作品
truly a one of kind work that everyone has to see.
假如你喜欢这一集 记住订阅”两分钟论文”
If you enjoyed this episode, make sure to subscribe to Two Minute Papers, we’d be happy
我们非常高兴有你加入我们这个正在成长中的学霸俱乐部
to have you in our growing club of Fellow Scholars.
谢谢观看和支持 下次再见!
Thanks for watching and for your generous support, and I’ll see you next time!

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视频概述

本视频介绍了史蒂夫•马瑟纳的一篇论文,讲述了如何模拟出一件真实的衣服。

听录译者

收集自网络

翻译译者

豆子

审核员

知易行难

视频来源

https://www.youtube.com/watch?v=UEPbzj-ekAI

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