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Can Visionlab matte an object without bluescreen?

Posted: Sat, 9th May 2009, 9:30pm

Post 1 of 6

ChromeHeart

Force: 1950 | Joined: 30th Jan 2006 | Posts: 117

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It seems like I have a question every other day.. sorry lol. Anyways, I need someone to tell me whether I can achieve this effect using Visionlab or if I need a program like photoshop. I found a pic of a jet but I want to get rid of the background which is sky but is not blue or a constant color. In other words, I can't use the sky as a bluescreen. I want to cut the jet out of the sky and be able to place it over top my first layer (film). Can I do this?
Posted: Sat, 9th May 2009, 9:44pm

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Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

You can use masks to remove everything but the plane, yes. And with an object like a plane it should be relatively easy, since it is a fixed geometric shape. It'll still take a lot of work, mind you, especially if the plane is banking or rolling at all, but its easier than roto'ing loose clothing or something.
Posted: Sat, 9th May 2009, 9:48pm

Post 3 of 6

ChromeHeart

Force: 1950 | Joined: 30th Jan 2006 | Posts: 117

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but Photoshop would make this a lot easier right? I'm not sure if the mask is able to lock on the object... but I've tried and it doesn't look like it so do I need to draw or move a mask for every frame?
Posted: Sat, 9th May 2009, 11:46pm

Post 4 of 6

spydurhank

Force: 1956 | Joined: 24th Jun 2008 | Posts: 1357

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Try using a garbage matte instead of a mask on the plane. Garbage matte's stay in the same place on the video or pic that you placed it on if you decide to animate the quade, while regular masks always stay in the same place on the canvas. That way you won't have to animate the mask frame by frame. Try it out it works.
Posted: Sun, 10th May 2009, 2:13am

Post 5 of 6

ChromeHeart

Force: 1950 | Joined: 30th Jan 2006 | Posts: 117

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Awesome, thanks man. That was exactly what I was looking for. I never fully understood the garbage matte before but it makes sense now. Just made a test and it's looking fairly decent.
Posted: Sun, 10th May 2009, 5:32am

Post 6 of 6

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

Ah, I missed the bit where the jet was a pic and not video. I was thinking the jet would be moving, in which case a mask would be what you want, but if its a still pic to be animated later, then yes, a garbage matte is the way to go. Just like spydurhank said.