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How to remove the background of the idolm@ster videos?

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Gordon1564:
I just saw this video yesterday:
 http://www.youtube.com/watch?v=mgl-d-UsAD8

So I wonder how could they key out the background and add another background with some great efftects, anyone knows how to do that? I really want to make a video like that.

Accoun:
I assume it's done by hand, using masks in f.ex. After Effects or Photoshop...

Cael K.:
We had this discussion quite a while ago, actually.

http://forum.project-imas.com/index.php/topic,1487.0.html

I don't know if anything new's popped up since then, but it should give you an idea of how it's done. In this case, I think I remember it looking like some sort of edge detection algorithm at the heart of it all.

animagic4u:

--- Quote from: Gordon1564 on December 01, 2012, 05:51:43 pm ---I just saw this video yesterday:
 http://www.youtube.com/watch?v=mgl-d-UsAD8

So I wonder how could they key out the background and add another background with some great efftects, anyone knows how to do that? I really want to make a video like that.

--- End quote ---

Umm actually in some of the videos it's built into L4U or you can use a blue background in SP.
Then use a bluescreen app in the editor of your choice.

Gordon1564:
Uhm... After watch that video you provide me, I figure out how to do that. They use an effect called different matte, you will need 3 videos with your characters have the same costume so the only different between 3 videos is the background so the effect will remove the background and keep your idols. But it's seems difficult for me because I don't own any PS3 or Xbox360 to have enough videos and do that effect. Really hope someone wants to cooperation with me... Anyways, thanks you guys a lot.

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