Bedienungsanleitung Optoma HQView-500 Series (Seite 27 von 35) (Englisch)

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An offset for the blend region can be set-up as well. The region between the edge and the start of the

blend area is black. The total pixels of blend area and offset region is limited by the same amount of

pixels as for an offset of zero.

Note: Each HQView unit needs to be provided with the exact same value for left and right blend region.

Top and bottom blend region have to be identical as well, but don´t need to have the same value as

left and right. The HQView units do not communicate between each other and thus they have to make

an assumption for auto zoom calculations and that is overlap of the neighbouring (and those beyond)

projectors is identical.

3.9.5. Blend Curve Type

The blend curve type menu allows to set the blending characteristics. For setting up the overlap the

Align Pattern should be used. Align Patter reduces the image intensity of each pixel in the blend area

by half. When the blend region set up through the blend width menu and the physical blend match the

S-Curve characteristics can be switched on. The image intensity is gradually reduced from the start of

the blend to the edge of the respective projector image. The S-Curve Value slider allows to control the

steepness of the S-Curve. For convenience in this Blend Curve menu a duplicate of the Output

Gamma slider can be found to match the grey scale of the images.

When a custom alpha map was loaded into the file system of the unit it is recognized at boot time and

the Custom Alpha Map menu item becomes available. Custom alpha maps can be uploaded through

the web or remote control API interface of HQView. The map can be switched on and off. The map is

combined with the Align or S-curve map internally generated. If that is not wanted Blend Curve Type

has to be set to off.

3.9.6. Black-Level Uplift

This enables the user to provide a black level uplift to compensate for the additional light leakage from

multiple projectors in overlap regions. The black level uplift can be set for the 9 possible regions of the

image. Setting the black level uplift for the middle of an edge also sets the black level uplift for the two

adjacent corners, and if needed the corners can then be set individually. The sliders for all regions

which are not involved in edge blending for a given multiple unit configuration are greyed out, and the

black level uplift for all these regions can be set together using the Non-Blend Region parameter.

3.9.7. Reduce Black-Level Uplift Width

The Black Level Uplift field may need to be adjusted to achieve a perfect result. There may be an area

of light leakage beyond the edge of the active image from the projector. With these controls the edges

of the black uplift region can be moved so they can be aligned with the edges of the area of light

leakage. In the case of projection under non-rectangular conditions the projection fields of adjacent

projectors are not aligned with the blend region. The corners of the non-blend region can be moved to

allow tracking of the edge of the projection field of adjacent projectors.

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