Keying a fairly desaturated green screen?

[hgelpke]

I could use some advice. I'm trying to key an image for class with provided footage and the green screen is a horrible desaturated green color and the footage has some noise on it. I could use some pointers as to what to do with it to help gain some separation from the foreground to get a better key.

[scrimski]

Denoise/degrain the footage, shuffle out the blue channel(which has usually the most noise in my experience), add a saturation node and crank it up.

[sathees]

Hope this thread will help you....

http://www.vfxtalk.com/threads/34412...ghlight=keying

[hgelpke]

I think the thread was helpful but I can't seem to locate the sample files that start your scripts off so it's a tad difficult to trace them through and see what they are doing.

[sathees]

ok, Have look at it...
http://satheeshnuketutorials.blogspo...e-in-nuke.html

[hgelpke]

I'll take a look at it. Fantastic blog by the way.Keep up the good work.

[hgelpke]

Are you using your expression node to filter out the green and then copying an alpha channel back in before premultiplying this image?