About RGB adjustment

The purpose of black level correction is to ensure a uniform black level in multi projector setups. Even when two projectors are of the same type, different projectors will output slightly different colors for black due to minor variations in their optical components. So if the projected image of the projectors overlap, there will be 3 different black levels: one for the zone where only the picture of the left projector (zone 1), one for the Blend zone (zone 2), and one for the zone where there is only the picture of the right projector (zone 3).

The black levels for zone 1 and zone 3 are typically corrected by defining a black level mask, which is applied to the image of each projector. This system is already in place but the applied mask is monochrome.

Using the Basic Black Level menu, you can already specify the area of the mask and its contents. But by using the RGB Black Level menu, you can specify the multiplication factors (gains) for the Red, Green and Blue colors separately.

How to perform

1. Select whether or not to link the Red, Green and Blue colors together. Check the check box in front of LinkRGB.

   

   LinkRGB allows to adjust the gain of the three colors together.

2. Select one of the sliders and move it left or right to modify the gain of the chosen color. The value can be changed between 0.0 and 1.0 .
3. Repeat for every slider until the desired result is achieved on the screen.