Adding Depth Via Fog

由专筑网，刘庆新编译

我觉得我从Bob Ross那学来一些东西。他总是擅长通过调整饱和度和变暗离画面最近的元素方式在他的画里创建景深，从而将远处的丘陵和山峰变淡，使得它们显得更遥远。用这种方式就创造出了近景和背景对象之间的鲜明对比。添加雾气的效果可以直接体现在建筑渲染图当中。我不断尝试将这个网站的技巧都展示出来，因为它们都很有用，很高效。在渲染图中增加雾气是其中的技巧之一，虽然添加雾气只需要几秒钟就可以完成，但是却可以彻底改变场景的感觉。在鸟瞰图中，增加雾气也可以帮助将地平面和天空衔接起来。在制作作品集或展板时，也提供了一个混合其他图或者背景的机会。

I thought I would pull another move from the Bob Ross play book. He was always great at creating depth in his paintings by saturating and darkening the elements that were closest to the viewer and then lightening the hills and mountains further off in the distance. This move created a clear contrast between the foreground and background objects. Adding this atmospheric haze can be directly translated into architectural illustrations. I’m constantly trying to show tips on this site that have a high return on investment, and adding fog to illustrations is one of those tips. Fog only takes seconds to add but can can completely change the feel of the scene. Often with birds eye views, adding fog can also help transition from the ground to the sky at the horizon and also offers opportunities for blending into other images or backgrounds when working on portfolios and presentation boards.

这么多年来，我见识过很多增加雾气的方法。SketchUp 有添加和输出雾气的能力。大多数渲染程序也都可以渲染雾气。但是我选择走很简单的路线。我只是用Photoshop画出来。它可能不是最精确的技术，但它是简单、快速、可控。

Over the years, I have seen many different techniques to add fog. Sketchup has the ability to add and export fog. Most rendering programs can render fog as well. I go the really simple route. I just paint it in using Photoshop. It may not be the most accurate technique, but it is fast and very easy to tweak and adjust.

为了增加雾气效果，首先，我创建了一个新图层，把它移至图层面板的顶端。然后，我选择“笔刷”工具里的白色笔刷，在顶端选择软刷头，然后将不透明度调低到大约10%左右。到这一步时，我简单地在高密度建筑的天际线位置画了雾气，然后把离画面最近的位置微微的进行褪色处理。你也可以看我之前的视频教程。

To add fog, I first create a new layer and move it to the top of the layers palette. I then select the “Brush Tool”, choose a white paint color, select a soft brush at the top, and lower the opacity to somewhere around 10%. From there, I simply paint in fog with a higher density in the horizon fading away as it gets closer to the viewer. You can also see this done in one of my older videos HERE.

下面这些图来自于我之前的关于渲染的论文中，展示了处理前和处理后的对比。

Below, I have uploaded some before and after shots of my old thesis renderings.

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