打印

转：the making of beanpod blooming

congcong009

Forum Administrator

Rank: 24

小p孩

绘画(Arts)二星会员

1^# 大中小发表于 2007-7-5 20:17 只看该作者

转：the making of beanpod blooming

'Project Overview'

'Beanpod Blooming'
by Wang Xiaoyu
译：congcong009

Hello everyone, my name is Wang Xiaoyu, and I am a student in China. I am pleased to talk to you about my new work, 'Beenpod Blooming'.
大家好，我叫wangxiaoyu，还是一个学生，很高兴能在这里为大家介绍一下我的作品“beenpod blooming”

Making the pose:

In China, there’s an ancient saying “a woman looks prettier when she looks back back over her shoulder with a smile. So, I chose this pose for this still.
在中国人们常说，“回眸一笑百媚生”，所以我选择这个姿势作为我的作品基本造型。

I imaged that the girl was dancing when she looked back to the camera and smile. This is the pose that I imagined.
我在脑海中构思的姑娘正在偏偏起舞，偶然回头面对镜头淡雅一笑。

Modelling tips:

There should be lots of detail in the eyelid and the eyelashes. Eastern girls always have soft eyelashes, especially the lower eyelashes. So, I chose transparency map for the eyelashes below, because transparency map ‘faking fur’ looks more soft. I chose the hairfx for the top eyelashes because the lashes should look harder.
这里需要有很多的细节,特别是眼睑和睫毛. 东方女孩的睫毛较为柔软,尤其是下面的睫毛. 所以,我选择了使用透明贴图制作下边的睫毛,因为透明贴图的感觉较为柔软.同时我选择了hairfx来制作顶部的睫毛,它们需要看上去更硬朗一点.

You can see below, the upper eyelashes look harder, and the lower lashes look more soft, that’s the distinguishing feature between transparency map and hairfx for eyelashes.
上图可见，顶部睫毛较硬，下面的偏软，这就是透明贴图和hairfx的效果区别。

For the model of the eyeball I prefer the double-deck model. You can see the difference between double-deck model and only one model with textures for eyeballs.
模特的眼球我倾向制作成2层，你可以看到一层和两层的明显区别所在。

Texturing tips:

Then I started to add textures to the girl.
添加部分材质。

Textures are the most important factor to the final realistic girl. There are many high resolution human photos and textures on this website www.3d.sk - I selected a photo from here for my girl’s skin.
材质对最后的真实渲染影响重大，所以我在www.3d.sk上下载了许多高清晰度的人体照片和材质。

These are the textures that I have composed in Photoshop from the photos.
在photoshop里对所有的图片进行合成。

Shading tips:

I use ‘mental ray fast skin sss’ to shade the girl’s skin. The shading network is shown below. I used almost the default setting of ‘fast skin sss’, but I still created some delicate effects with it, such as colourmap will turn to grey on the edge. Also, the bump value will turn to a high value on the part facing the strong light. Facing ratio can also create a fake ‘fuzz’ effect.
我用mental ray的sss面板渲染了姑娘的皮肤，图层结果如上图，我用的都是sss面版里的默认选项，但我仍然添加了一些细节，例如照亮了灰度层次的边缘，同时，用强光分离出面部的凹凸层次，同时，面部放射还可以造成一种绒毛的效果。

Hair Style:

Hair is also important to a realistic character. I chose this hair style for the girl
毛法依然很重要，我选择了下面的这个发型。

To create this hair style you can read the following tutorial by Mike Fudge <<Maya Hair : hair with history>>. This is the hair style that I created in maya:
毛法教程请参考mike fudge的<<Maya Hair : hair with history>>.

Lighting:

Now, I’ll show you the lighting used on this girl:
下面是灯光的一些设置。

Rendering tips:

Next, I’ll render them all. I encountered a very difficult problem: ‘out of memory’ (because hair rendering for mental ray has a really tremendous workload!). My memory is 1G, which is too low to endure this. By all appearances I should divide them to passes.
To pick up the shadow of the hair without displaying the hair, here’s a useful method; convert hairfx to a low poly, then assign a full transparent lambert to it and connect a mib_shadow_transparency mode to the mental ray shadow slot of Shading Engine.
下面是渲染，我碰上了一个最为麻烦的问题，那就是内存的溢出问题，因为图像量较大的毛法在mental ray下渲染是件很痛苦的事情，我的内存是1G，但是依然无法承受，为此我不得不分层渲染。
下面这个方法是在分离掉毛法却保留阴影的一个常用方法，将毛法低模化，然后付与一个光的垂直传递，让她在mental ray的渲染中采用低模化生成一个简单的阴影。（正在学maya，不知道这样翻对不对??

）

Here we’ll get only the image rendered, without the hair displayed.
这样我们得到了一张没有毛法的渲染结果

Compositing:

Now everything is prepared, let’s compose the final image in Photoshop…
现在，万事俱备，利用photoshop合成??万事大吉。

That’s all! Unfortunately, I’m a little unhappy with the final image because my “bean” looks just a bit older than what I had originally imagined, but I hope that you still like her and my tutorial!
Thank you all here and thanks to the “www.3d.sk” for giving me such great girls’ textures!
好了，但是我有点不满意，那就是最后的渲染中姑娘好像比我想象中的要偏老，不过还是希望你们能喜欢她，也喜欢我的这个教程。
同时感谢www.3d.sk提供了这么多姑娘的材质资源。

[ 本帖最后由 congcong009 于 2007-7-5 21:22 编辑 ]