Maintain the selection, hit Ctrl + J to make a layer via Copy and apply following Surface Blur Settings to this layer.

仍然保持选区所在，点击Ctrl + j来复制选区到一个新图层，然后在新的图层中设置表面模糊(滤镜模糊表面模糊)，参数如下。

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As you can see the background of the photo studio was kind of dirty, so in order to remove the stains I applied some Surface Blur.

就像你看到的，照片工作室的地面有点脏，所以为了移除污渍，我使用了一些表面模糊。

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For the false contour problem of the surface rendering, an anisotropic diffusion smoothing algorithm is presented for surface blur.

同时针对表面重建的伪影问题，提出了一种基于各向异性的平滑算法，使得内窥效果更加逼真；

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Microsoft even has its own line of Surface tablets that blur the line between PC and laptop thanks to a clever snap-on keyboard cover.

CNN: How Samsung is out-innovating Apple