Green screen or Chroma key technology is a technique for compositing pictures or various frames into one where a tiny color from one image is removed to enhance the other. This happens when the object in front is made transparent so that the object behind it can be clearly seen.
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Green screen works as best backdrop
1. Green Screen Works as Best Backdrop
Green screen or Chroma key technology is a technique for compositing pictures or various
frames into one where a tiny color from one image is removed to enhance the other. This
happens when the object in front is made transparent so that the object behind it can be clearly
seen. The technique is as well recognized as âcolor separation overlayâ. Some although do make
use of blue color too but green is the best hue since it is sensitive to the sensors of camera which
is able to capture elements that are essential to get a striking result in pictures and videos. One of
the most common examples to be referred to here is the weather broadcasting where we see the
meteorologist standing in front of map however in reality it is a plain backdrop and later that
backdrop is substituted with world or national map.
How the process works?
The principal subject is pictured or filmed by making him stand in front of a single color
backdrop, especially green, which is thought to be furthest away from skin tone. The portions of
the video, if particularly spoken about using the technique in films, matching with pre-selected
hues are replaced by another alternate video or image. In todayâs time, green is the color that is
mostly used in backdrops. The green channel contains the least noise and has the capability to
produce possibly the cleanest mask. Also, another benefit that you get by using this color in the
backdrop is that there does not arise a need to have too much of lighting because of its high
sensitivity to sensors. The most important part comes when the foreground has to be separated
from the background and until now blue was the color that was brought into use. Along with
green screen backdrops in the kit, there are other tools and a body suit that is worn by the subject
given that the person needs to be overshadowed by other objects in the video or picture. There
are a lot of blockbuster movies which have as well enjoyed the benefits of this technique.