The other albedo map contains finer details, but in return, is incomplete.

一张无光颜色贴图能显示出更微小的细节，却并不完整。

This albedo map means a texture, a colored pattern that describes how our skin reflects and absorbs light.

无光颜色贴图的实质就是纹理，一种有颜色的图案，它描述的是我们的皮肤是如何反射和吸收光线的。

So we redid the way we light our characters in our menus and this is what's called a cube map.

所以我们重新设计在菜单中点亮角色的方式，这就是所谓的立方体贴图。

While there was hardly room for company, this bunk came with a pinup girl.

虽然几乎没有地方陪伴， 这个铺位有一个贴图女郎。

Of course, it would clearly be an extremely laborious task to digitize the 3D geometry and the albedo map of our face.

当然，实现3D影像以及数字化面部无光颜色贴图是一项艰巨的任务。

Furthermore, when it comes to video game graphics, there are advanced topics such as Shadows, Reflections, UVs, Normal Maps and more.

此外，当谈到视频游戏图形时，还有诸如阴影、反射、UV、法线贴图等高级主题。

The key insight is that we can also do something akin to that here as well — we take this incomplete albedo map, and try to synthesize the missing details.

关键是，我们还可以举一反三，将这个不完整的无光颜色贴图尝试合成出缺少的细节部分。

To figure it out, we use ray tracing with this simplified screen space 3D representation and  bounce the rays off of the lake's pixels using the normal map.

为这个问题，我们使用光线追踪和这个简化的屏幕空间 3D 表示，并使用法线贴图将光线从湖面像素上反射回来。

After taking a photograph, this technique creates two of these albedo maps: one is a complete, low frequency map, which records the entirety of the face, but only contains the rough details.

拍摄照片后，这种技术会创造出这样两张无光颜色贴图：一张是完整的低频地图，能记录整个脸部，只能包括一些粗略的细节。

Wrinkles, engravings, grain on a wooden table are excellent examples of details that we can add to our models, and computer graphics people like to collectively call these things displacement maps.

比如木桌上的皱纹、雕刻、颗粒感等等就是我们想要加到模型上的细节的很好的实例，计算机图形学研究者们喜欢把他们统称为“置换贴图(displacement maps)”。

The only constraint I'll ask is that you do this continuously, which you can think of as meaning you never cut the sphere or tear it in any way during the mapping.

我要问的唯一限制是你要连续执行此操作，你可以认为这意味着你在贴图过程中永远不会以任何方式切割球体或撕裂它。

And with this new technique called Deep Opacity Maps, these layers are chosen more wisely, and this way, we can achieve higher quality results with only using 3 layers, and it runs easily in real time.

这项新技术就是深度不透明贴图，能将这些分层的选择更加优化，这样一来，你只需要用3层就能获得更高品质的结果，并且这种技术运算相当快。