网络摄像头背景模糊效果
我以前见过这种效果，除了镜头中最前面的物体之外，所有东西都变得模糊。它可能是与视频和快照实时配合的闪光或弯曲效果。任何人都可以阐明这种效应的名称或指出一些资源吗？ 谢谢！
更新：所以这是内置了这种效果的 microsoft lifecam show，可以在 2:11 标记处看到： http://www.youtube.com/watch?v=u6ujUJU4Wqw
不像我记得，但这就是我正在寻找的。有什么想法可以在自定义应用程序中实现这一点吗？
I've seen this effect before, where everything is blurred except the front most object in the shot. it was possibly a flash or flex effect which worked in realtime with video and snapshots. can anybody shed some light as to what this effect was called or point to some resources?
thanks!
UPDATE: So it was the microsoft lifecam show which had this effect built in and can be seen here at the 2:11 mark:
http://www.youtube.com/watch?v=u6ujUJU4Wqw
not as clean as i recall, but that's what i'm looking for. Any ideas how this can be achieved in a custom app?
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苹果公司推出了一款名为 Photo Booth 的产品。它要求您在对背景进行采样时退出镜头。您可以应用过滤背景，甚至视频背景。当您回到画面中时，背景会实时出现在您身后。它似乎是通过对背景颜色进行采样并在您后退到镜头中时使用这些颜色为您应用蒙版来做到这一点的。这是一个非常漂亮的效果。查看http://www.apple.com/macosx/什么是macosx/photo-booth.html。
Apple makes a product like this called Photo Booth. It asks you to step out of the shot while it samples the background. You can apply filtered backdrops, or even video backdrops. When you step back into the picture, the backdrop appears behind you in realtime. It seems to do this by sampling the background color and using those colors to apply a mask to you when you step back in the shot. It's a pretty neat effect. Check it out http://www.apple.com/macosx/what-is-macosx/photo-booth.html.
有一个面部检测库。 您可以处理每个视频帧，使除面部之外的所有帧都模糊。
There is an face-detection lib. You can handle each video frame blurring all except the face.