projectorBlend input / output resolution bug

Bugs
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1

Hello, I am trying to use the projectorBlend component from the palette, but I’m struggling to understand how it wants to be used. I have scoured the web for tutorials, but I’m surprised to see that there are none, and unfortunately the user guide is of no help. I’ll explain my setup below, just in case anyone is able to help.

  • I have a 4992 x 1080 canvas
  • The canvas is covered by three Full HD projectors (1920 x 3 = 5760)
  • The projectors have a 384 pixel overlap, thus achieving the desired size (5760 - 768 = 4992)

No matter how I interact with the projectorBlend component, I get a cropped output. If I feed it a 4992 image, I get top and bottom crop. If I feed it a 5760 feed, I get a left and right crop. I think I have set the component correctly, so I suppose I am holding it wrong.

Has anyone encountered a similar issue and / or has anyone used the projectorBlend component enough to lend a hand?

2

Hello, I’m also interested in the answer i have the same struggles !

4

Hi @NiccoG and @cgommard

when blending 3 projectors, the input canvas is being cut into 3 parts where the area that overlaps is repeated as each projector still is using it’s 1920x1080 pixel area.

image
image1631×1400 175 KB

Hence your input should be a full 5760 x 1080 px canvas where the left and right edges (each side 384 pixels) contains no content you want to have on screen. This is basically the area that is being cropped in the end.

image
image1668×916 108 KB

Does this explain it a bit?

cheers
Markus

5

This does clear things up @snaut, thank you! Unfortunately I don’t have a 3-projector array to test it with, but I will next time I do!