Avenview MLT-EDGEPRO-2X2, Руководство по эксплуатации продукта

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3 . 8
Geometry Correction and Edge Blending
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[Gamma] - Color Correction In Edge Blending Area (Cont'd)
• When adjusting black level, [Offset] value will be
applied to complete color range and reduce
image quality. [Offset] gamma adjustment can
avoid this issue and let [Offset] adjustment only
affect black level but not normal image.
[Offset] - Black Level Uplift
If edge blending is performed under dark environment, due to light leakage in projector optical system, user will see gray
area in overlapped area. This gray area can’t be fixed by signal processing. The only way is to uplift the black level in non-
overlapped area to reduce the black level difference. [Offset] function is to balance black level in the display under dark
environment.
• Left picture is to show projector light leakage
under dark environment. In overlapped area, the
offset value is the sum from two projectors. Low
contrast ratio projector will be more serious.
• Three sub-menu under [Offset]:
[Transition]: To set black level color Offset value
in edge blending area. It can’t be reduced
because default value is set at lowest level “0”.
No further adjustment can be done.
[Non-transition]: To set black level Offset value
in non-overlapped area. [Reset]: to reset [Offset]
value to “0”. Normally, user only adjusts [Offset]
compensation in [Non-Transition] area.
User can’t reduce [Transition] area black level.
The default value is set at
“0” already. No adjustment is required.
The starting point for this Offset is based on Edge blend borders.
The projector light leakage area is from the original projecting
area before geometry alignment. Therefore Offset borders may
not be the same as light leakage area. User needs to use
[Corner] menu to align the border lines for Offset adjustment.