R5911443 /02 UDM 978.8.3 Basic black level adjustmentAbout adjusting the black levelThe purpose of the black level adjustment is to align the black levels in the overlapped regions with the blacklevels in the other regions.This is needed because the black levels will be brighter in the blend zones, since multiple projectors willproject on the same screen area.The size of the black level area is calculated automatically from the blend zones. This is done by using thestart position and size of each edge of the blend and adding an additional size of 8 pixels to reduce the effectknown as "sea of mirrors".You can also specify the offsets manually by turning off the automatic calculation. The black level value isadjusted in a 16–bit resolution from 0 to 65535.The following figure shows how this occurs in a side by side configuration without any correction of the blacklevel.Picture Left Picture RightBlend ZoneImage 8-57How to adjust the black level manually1. In the main menu, select Installation → Blend and Mask → Black Level → Basic Black Level.Image 8-58: Black Level menu — Basic Black LevelThe Basic black level menu is displayed.Image 8-59: Basic Black Level menuGUI – Installation
