Optoma HQView520 User Manual download pdf (Page 29)

April 2013

3.9.3. Horizontal Pos/Vertical Pos

Settings: 0 to 3 indicating co-ordinates 0,0, to 3.3 for the maximum matrix size of 16

With Auto zoom turned on this provides the HQView unit information of which window portion of the total

image it is assigned to and has to process (cut out and resize).

Note:- This function can be used in conjunction with the item above to select the blend regions to be

provided even when auto zoom is turned off

3.9.4. Blend Width

The blend width menu provides sliders to set up the overlap region for left, right, top and bottom blend

region.

Note With the 5xx models when changing the slider value from within the OSD the blend area is not

updated ‘live’ immediately. An update is forced when pressing the menu/enter button, thus the slider is

replaced by the menu. This is not ideal, but excessive blend area write time suggested this approach.

The overlap is set up in output pixels with a range of up to one third of the output resolution. For a

configuration with two projectors in horizontal direction the overlap can be higher to allow 16:9 images to

fit on two combined projectors with an aspect ratio of 4:3 or 5:4.

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 sets 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 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.

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.

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HQView-500 Series 1
Operating Instructions 1
Contents 3
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Menu Tree 10
HQView-500S Menu Tree 10
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Optoma HQView520 User Manual Page 29

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