来自专筑编辑刘庆新的报道。我们在作图时用过几次这种风格，我很喜欢它。它操作起来也很简单。这个想法是通过应用遮罩整个渲染图，来打破边缘，从而获得一个拼贴风格。这种技术的优点就是，当你获得一个不那么正式的拼贴风格时，渲染图仍然有其所有信息、细节和分辨率。

在我的码头设计中，我选择了两张新图来展示它是怎样工作的。遮罩最适合用在最后，这意味着需要一整张渲染图。如果遮罩不够用，起不了大的作用，可以将其移除，而对整张图没有影响。

下图是遮罩之前的整个框架渲染（减小饱和度是为了展示遮罩）

We have used this style a couple of times in the office and I am a big fan of it. It is also really simple to implement. The idea is to apply a mask over a full resolution illustration to break up the edges giving the illustration a collage-like feel. The great thing about this technique is that while you are getting a less formal collage style, the image still has all of its information, detail, and resolution where it counts.
I have chosen two new views of my wharf design to show how it works. The mask is best applied at the very end which means a full illustration edge to edge is still necessary. This also means if the mask isn’t working, it is no big deal and can be removed without any harm to the illustration.
Below is the full frame base rendering before masking (desaturated to better show the masking).

图中蓝色代表我需要遮挡的部分。我创建一个图层来进行遮罩，将其移到其它图层的顶部。然后选择“多边形工具”开始选择我需要遮罩区域。一旦选定区域，将该区域用白色填充。经过多次重复后，我测试出哪个区域需要被遮罩，哪些地方最合适。我尝试软化边缘、降低饱和度，但是，最后，我喜欢有波纹的边缘，也喜欢白色区域和渲染区域形成强烈的对比。

The blue represents what I masked off. The mask was made by creating a new layer and moving it to the top of the other layers. I then selected the “Polygonal Tool” and began selecting areas that I wanted to mask. Once the selection was made, I filled in the selection with a white paint. I went through many of iterations testing out what areas should be masked and what works best compositionally. I experimented with softening the edges or lowering the opacity, however, I ultimately preferred the crisp edges and the sharp contrast between the white and rendered areas.

这只是个简单操作，但一旦完成，会改变整个图象的基调。

It is a simple move, but one that completely changes the tone of the image.

最后一张图是用V-Ray渲染的，分辨率是4500px X 2500px。然后我改变颜色、纹理，并在Photoshop里加了一些人。最后，我跳转到Topaz Labs PS plugin插件里来突出细节。

The final illustrations were rendered with V-Ray at a resolution of 4500px X 2500px. I then tweaked colors, textures, and added people in Photoshop. Finally, I jumped into my Topaz Labs PS plugin to punch up the detail.

出处：本文译自visualizingarchitecture.com，转载请注明出处。