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Unclean green removal.

Posted: Tue, 14th Dec 2010, 2:11am

Post 1 of 9

FXhomer67795

Force: 400 | Joined: 11th Dec 2010 | Posts: 4

PhotoKey 3 Plug-in User

Gold Member

When I remove the green with PhotoKey3 Plug-In, then superimpose that on a white background, there are flecs of grey everywhere on the white.
Posted: Tue, 14th Dec 2010, 3:34am

Post 2 of 9

Axeman

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

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

Sounds like you need to adjust your Key settings to remove them.
Posted: Tue, 14th Dec 2010, 9:35am

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Simon K Jones

Force: 27955 | Joined: 1st Jan 2002 | Posts: 11683

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FXhome Team Member

Yeah, try lowering the Detail slider.

If you upload the original image we should be to give more specific advice.
Posted: Tue, 14th Dec 2010, 9:40am

Post 4 of 9

FXhomer67795

Force: 400 | Joined: 11th Dec 2010 | Posts: 4

PhotoKey 3 Plug-in User

Gold Member

Lowering the detail slider made it worse. How do I upload the image? Thanks!
Posted: Tue, 14th Dec 2010, 9:43am

Post 5 of 9

Simon K Jones

Force: 27955 | Joined: 1st Jan 2002 | Posts: 11683

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FXhome Team Member

If you don't have your own hosting or a dropbox you could use a file sharing service such as YouSendIt or ImageShack.
Posted: Tue, 14th Dec 2010, 9:48am

Post 6 of 9

FXhomer67795

Force: 400 | Joined: 11th Dec 2010 | Posts: 4

PhotoKey 3 Plug-in User

Gold Member

That's pretty slick. Thanks for the tip. Here's the link http://yfrog.com/jm142examplej
Posted: Tue, 14th Dec 2010, 9:52am

Post 7 of 9

Simon K Jones

Force: 27955 | Joined: 1st Jan 2002 | Posts: 11683

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FXhome Team Member

Could you upload the original green screen image so that we can test it? Thanks.
Posted: Tue, 14th Dec 2010, 10:15am

Post 8 of 9

FXhomer67795

Force: 400 | Joined: 11th Dec 2010 | Posts: 4

PhotoKey 3 Plug-in User

Gold Member

Okay. Here ya' go. http://yfrog.com/5m142exampleoriginalj
Posted: Tue, 14th Dec 2010, 10:40am

Post 9 of 9

Simon K Jones

Force: 27955 | Joined: 1st Jan 2002 | Posts: 11683

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker Windows User

FXhome Team Member

Thanks!

The problems here are arising from a slightly underlit green screen, I think. Particularly around the edges and top it gets noticeably darker, which is where you're having remnants of the screen remaining.

In PhotoKey 4 there are new tools for dealing with this. Using the new 'Alpha levels' tool and adjusting the black point to 21% alters the contrast of the key and removes the problem areas.

I note that you're using the PhotoKey Plug-in, so you won't have access to this tool in the plug-in itself. I'm not a Photoshop expert myself, but I would assume that you can adjust the levels of the keyed layer's alpha channel? If you can do that then you should be able to get good results.

Here's a quick example composite I did: http://tarn.fxhome.com/forumimages/dog.jpg