FOLSOM Blend PRO BP-2002, Инструкция по установке и эксплуатации

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Manual # 26-0206000-00 / Revision A BlendPRO – Wide Screen Image Processor 35
Figure 2-8: Data Doubling
Aspect Ratio & Overlap
The required output screen configuration can be determined in a number of different ways by interacting with
BlendWizard. For example, consider the case in which a screen is 3 times as wide as its height, a 3 to 1 aspect ratio,
and the projectors to be used are 1024x768 native resolution. The total horizontal number of pixels needed is 3x the
vertical total of 768 which equals 2304. By taking the total number of horizontal pixels available (3x1024) or 3076 and
subtracting the horizontal number of pixels needed, 2304, a maximum overlap of 768 pixels can be calculated. Since
there are three projectors creating two overlap regions, 768
÷
2=384 pixels per overlap region. Note that the total
overlap cannot exceed the number of horizontal pixels of the selected projectors.
The output configuration can also be tailored to match existing source material. Let’s say you have source material
that is 16x9 or 1.777 aspect ratio such as HDTV and that the image is to be input to a ScreenPRO PLUS where it is
processed to drive two 1280x1024 inputs to BlendPRO. The total number of viewable output pixels is determined by
multiplying the vertical number of lines 1024 times the 1.777 aspect ratio-1024x1.777=1820. The maximum overlap
region is determined by summing the horizontal resolution of the projectors 1280+1280=2560 and subtracting 1820 to
yield 740 pixels of overlap. To display a HDTV image in this manner we generally recommend using two 1280x1024