Green Screen and Blue Screen Backdrops!!!

Hi,
I am looking at doing some portrait photography. However, the client wants me to change the backgrounds for almost all of the pictures.
I know the lengthy process using photoshop.
I am wondering if anyone knows of a quicker software which will process the images and remove the backgrounds for me?
Also is there a specific type of backdrop colour I'll need?
Many thanks.

> Linda,
> Some of them I can knock out, pun intended, in less than an hour, but some can take 4-5, hence the average. If it's a whole person to knock out, I will often draw a path around everything but leave the hair and any out of focus areas loose. The path will serve as the selection to knock out most of the person. From there I'll make a copy of the file and crop it to just the head or even just the frizzy part of the hair and then run KnockOut, which lets me save out a .psd grayscale mask, which I then load into the original document, align it with the proper layer and use it as the basis for the selection in a Layer Mask. The KnockOut selection is almost never perfect, but it is always better around frizzy out of focus hair than any method built into Photoshop. After loading the selection into the layer mask, I make a copy of that layer, apply the layer mask and then run Photoshop's Matting filter at the bottom of the Layer menu. It's usually Matting>Remove White Matte. That sometimes needs to be backed off somewhat, depending on the color of the hair and what background it's ultimately going against. Of course, it's one thing to lay out all the steps here and another to make it all happen at billboard size.
> My sympathies are with you regarding billable time. Hopefully you can make it up later one on something that takes you less time than you thought. If you come across an image that is giving you trouble, feel free to call me. If I have time, you can upload a file and I'll take a crack at it.
Peter,
Thanks very much for the offer. Great to know if I find myself going in circles over the same problem again. The same photographer is now in Peru and plans to do another exhibit when he gets back. He usually calls me as a last resort due to trying to keep his cost down.
I also appreciate you elaborating on your methods. I work in a similar way as far as starting with a clipping path around all the main areas, then make a larger selection around the hair. I haven't try using defringe though. Nor have I tried Corel's Knockout.
I've experimented every-which-way with MaskPro, Extract, and various channel experiments, all not to my satisfaction though. On the last project I resorted to painting in hair with a small brush, even a custom brush I tried to come up with that mimicked hair around the edges, and also the clone tool.
The next time I do this I thought I might try to develop a better method for painting or brushing hair back in to where it has the appearance of a natural edge.
Again, it is encouraging to know that even someone as talented as yourself, and others here, still struggle with masking hair. I seem to remember a few years back, either Phil or Ashley had a thread going about this topic. I believe the image was a model with long blond hair that was being blown by a fan. The final image was amazing and stuck in my mind as being one of the best masking jobs I had seen.

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Green Screen and Blue Screen Backdrops!!!

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