Справочник Пользователя для Barco PFWX-51B & PFWU-51B

PFWX-51B/PFWU-51B  10/02/2014

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7.Image

To balance the three color signals of a particular source there are conditions; in fact we must know the black and the white 
level of the source i.e.:

1.  The source in question must be able to generate a white signal, ideally a 100% white (background) full screen pattern
2.  The source in question must be able to generate a black signal, ideally a 100% black (background) full screen pattern

A

B

White balance : In the projector, we will set the contrast for each color until we get a 100% light output picture when 
projecting a 100% white image (image A)

Black balance : In the projector, we will set the brightness for each color until we get a 0% light output picture when 
projecting a 100% black image (image B).

The changeover from min to max is indicated by the apparition of bright spots also called “digital noise”

An alternative to a full screen White/black pattern is the standard gray scale pattern, the white bar will be 
used for white balance and the black bar for black balance.