Chromakey is the process of using green screen or blue screen as a background
by Sushil S. seo servicesChroma key is an editing technique in which two images are
composited together to create a single, finished image. This editing technique
is sometimes referred to as blue or green screen referencing the backdrop used
to film the subject of an image which will be subjected to the chroma key
process. Since digital cameras became mainstream with pros, there's been an
increasing interest in chromakey photography and then removing that background
in software. Green screen software is the foundation of chroma key photography. They are
the ones that make it possible for you to replace the existing background with
something of your choice. Green screen technology is the basis of the effects
seen in everything from the latest Hollywood blockbusters to the weather
forecast. With green screen it's simple to superimpose anything or anyone in to
any shot. You can make a presentation along with all the relevant facts and
figures. Green is currently used as a backdrop more than any other colour
because image sensors in digital video cameras are most sensitive to green, due
to the Bayer pattern allocating more pixels to the green channels, mimicking
the human eye's increased sensitivity to green light. Therefore the green
camera channel contains the least noise and can produce the cleanest
key/matte/masks. Additionally, less light is needed to illuminate green, again
because of the higher sensitivity to green in image sensors. Green screen
backdrop is generally associated with photography/ movies & effect shots.
Green screen backdrops are very useful because the ordinary human skin does not
have green components in it. This helps in easy background replacement without
hindering the general view of the subject who is acting or posting against the
green screen. Using green screen backdrops has some benefits. The green screen
technique is fairly easy to use and is very cost effective. Sometimes the technique
is used to create special effects like invisibility with the actor wearing
garments and makeup which approximate the tone of the background so that he or
she will disappear in the finished image. Chroma key can be used to make it
look like actors are in dangerous, crowded or fantastical situations with a
greatly reduced cost to the producers and with less stress for cast and crew.
There are many chroma key software programs which can be employed to apply green
screen effects. However the best of the software programs will be simple to use
and produce great shots. To buy a suitable software program, check whether it
integrates the following features into it-If you are an accustomed to green
screen technique and photography you will want the software to be simple to
use. Another feature that you should inspect for is how simple it is to
customize the software. If it doesn't allow you to do the settings in an easy
way, then you will surely suffer from problems at the end of the day. The updates
to chroma key software come every now and then and you need to ensure that you
buy the foremost current version of the software. The green screen software is
not available free of charge and therefore you need to inspect the real worth
of it as you purchase.
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Created on Dec 31st 1969 18:00. Viewed 0 times.