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Chroma Key
Posted: Tue Feb 10, 2009 6:06 pm
by zap
Hi
Most of you use white or black turntable colors and edit in photoshop or else.
Why not use chroma key cholor?
Any hint = welcome
Re: Chroma Key
Posted: Tue Feb 10, 2009 7:57 pm
by 360Texas
If you are using a chroma key for background removal, I found a few ideas you might take into consideration.
IF your object is white... or any variation white, make your back ground and table the opposite color BLACK.
Using a background color opposite color of colors in your object makes it easy to REMOVE or replace that color.
Issues:
background cloth should be smooth flat and with NO folds that will cast shadows.
Look closely at the various colors in your object then select a background/table the opposite color.
I used 3 or more soft lamps: left, right and top to avoid shadows.
All light bulbs should be the same type to avoid White balance issues.
Use an 18% gray card in first test image (like a WhiBal card
http://www.whibal.com )