TV Production and Green Screen

Posted on December 17, 2009
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The advent of satellite T. V has seen the virtual explosion of TV channels, broadcasters, production houses and content producers. This is because cable tv and direct to home platforms have indeed pushed the frontiers of television broadcasting beyond all conceivable boundaries and onto a world scale. It is no wonder that television networks across the world utilize the use of a Green screen.

One of the common techniques that are employed in TV program production is that of using a Green screen in the background of the studio where a specific program is being shot. This is a part of the strategy of chroma key which deals specifically with the removal of certain photographs in the background of the shot and superimposing this with another image, which is better for the production. As an example, one can employ a screen that’s green in color behind a broadcaster who is reading out the weather stories. When spectators watch the program, the green or blue screen as the case might be is replaced with a weather map or scenes of certain cities or satellite pictures being shown instead.

A Green screen is especially handy for chroma key uses, on account of the incontrovertible fact that the ordinary human skin tone has very little elements of green in it. This provides help in superior quality of image superimposition as well as the replacing of background, without interfering much with the general view of the broadcaster who is standing in the foreground. If there had been any green tint or tone in human skin, parts of the body would have become invisible when using the other colored screen, making the effect quite peculiar and highly indecorous and incongruous.

One of the main advantages of using a Green screen is that it is reasonably simple to effect as well as being inexpensive. If one were to employ a huge plasma or HDTV screen behind the broadcaster, the effect could be brilliant, but the cost would be far bigger than employing a green screen. In nowadays of depression, where cost management is the key, the dice is loaded in favour of using less expensive options.

One can easily make a Green screen that may be utilized in television program production. For this, something as straightforward as a table cloth can be employed. This material has to be uniformly painted, so that there are no smudges or uneven areas that would stand out when the show goes on air. One can also employ a plain wall that’s uniformly painted in green to form the colored background. One of the tips to remember when using such a screen is if the background image is one of trees or forests, green is a more acceptable color to use than blue for the background, while if the image is of the sea or the sky, green wouldn’t be so good. Using a green screen is so a good means of utilising chroma key technique in TV programme production, which is popular due to its simplicity and inexpensiveness.