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A further function g ( r , g , b ) → ( r , g , b) is needed to remove green spill on the foreground objects. A very simple f () function for green screen is A ( r + b) − Bg where A and B are user adjustable constants with a default value of 1.0. A very simple g () is ( r, min ( g, b ), b ).
Image editors may feature a number of algorithms which can add or remove noise in an image. Some JPEG artifacts can be removed; dust and scratches can be removed and an image can be de-speckled. Noise reduction merely estimates the state of the scene without the noise and is not a substitute for obtaining a "cleaner" image.
Foreground detection separates foreground from background based on these changes taking place in the foreground. It is a set of techniques that typically analyze video sequences recorded in real time with a stationary camera.
Background music is commonly played where there is no audience at all, such as empty hallways, restrooms and fitting rooms. It is also used in artificial space, such as music played while on hold during a telephone call, and virtual space, as in the ambient sounds or thematic music in video games .
Cropping is one of the most basic photo manipulation processes, and it is carried out to remove an unwanted object or irrelevant noise from the periphery of a photograph, change its aspect ratio, or improve the overall composition.
Quinceañera - Wikipediawikipedia.org
Removal of non-free images. The ninth item of Wikipedia’s policy for non-free content states that non-free images should only be used in the article namespace (not disambiguation pages), and goes further into the underlying reasons for the policy.
Matte (filmmaking) Mattes are used in photography and special effects filmmaking to combine two or more image elements into a single, final image. Usually, mattes are used to combine a foreground image (e.g. actors on a set) with a background image (e.g. a scenic vista or a starfield with planets). In this case, the matte is the background ...
In astronomy, background noise or cosmic background radiation is electromagnetic radiation from the sky with no discernible source. In information architecture , irrelevant, duplicate or incorrect information may be called background noise.
In 1991, the symbol was changed in order to remove the swastika, out of respect to the victims of the Holocaust, but as of 2007 it has been restored to its original form. Ananda Marga
Redaction or sanitization is the process of removing sensitive information from a document so that it may be distributed to a broader audience. It is intended to allow the selective disclosure of information. Typically, the result is a document that is suitable for publication or for dissemination to others rather than the intended audience of ...