Green screen compositing has expanded its reach to include computer and video imaging. There are numerous mysteries attached to the execution of successfully.
Good Stuff Happens in 1:1 Meetings: Why you need them and how to do them well
Green screen imaging
1. Green Screen Imaging
Green screen compositing has expanded its reach to include computer and video imaging. There
are numerous mysteries attached to the execution of green screen imaging successfully.
What is it all about?
Earlier it had been termed as ‘blue screen’ compositing but with time it has shifted to ‘green
screen’. The broader terminology that had been opted is the ‘traveling matte composite’, but not
many seemed to have given nod to it. So to refer it, green screen technique is what could be
spoken of here. The process initiates with photography of a subject standing in front of well-lit
backdrop that is all in green color. The process of compositing, no matter photo-chemical or
digital, is able to replace all the space in green with an image or background picture with the one
wants to be used and this is known as background plate. Green screen composites could be
created optically for movies or still photographs with the help of hardware for live videos and
also by making use of digital programs so as to composite in-motion and motionless images. Till
the duration of 1990s, a majority of green screen movies would be composited optically and so
was done for television. Although next to green is the color blue which could be used but there
are rest as well. Green is the most common of all and at times even red is utilized for some
special occasions. The term Chroma Key is as well used for the similar procedure.
Work process- It is based on the luminance key and it is one where everything in the image, its
brightness levels are set in keys along with other color generators. This process works pretty well
with titles. There could be troubles with clothing of a subject as there are many luminance tones.
Shoes, hair and shadow regions could be very dark whilst skin, eyes and shirt collars could turn
out to be 100% white. The technology creates keys on a single color channel. The color green
which is used has many benefits to offer. The reflection level in green color is better which is
why converting it into matt becomes easy.