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geometry controll

Discussion in 'Desktop & Laptop Computers Forum' started by edd, Oct 8, 2003.

  1. edd

    edd
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    my projector has pretty poor geometry controll, is there some software that will let me controll the image before it even gets to the pj?

    ie trapeizium settings etc.

    edd
     
  2. nathan_silly

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    What PJ have you got? All CRT PJ's (LCD's too a lesser degree as only one lens) have a extensive array of adjustments- and can be corrected.

    Why can't you sort out the PJ?

    You will want to get the PJ geometry sorted, and not the source corrected.
     
  3. owain_thomas

    owain_thomas
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    interesting point though, my crt tv has a slight problem with geometry which means that I'll never get it "just right". Is there some sort of software which would allow manipulation of the vga output to accommodate things like this, I can imagine that correcting it in windows with a mouse and on screen grid would be easier than using the arcane and cumbersome service menu on my TV.

    owain
     
  4. edd

    edd
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    my pj geometry controlls seem to be broken to be honest, and since its only a stop gap for 6 months or so (its a barco data 600) i wasnt that bothered about it being perfect. but haveing a giant trapeziod image is certainly ditracting.

    edd
     
  5. Mr.D

    Mr.D
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    Putting video res frames through some sort of mesh based warper and expecting it all to happen on the fly with no softening or artifacting is asking a bit much even from a fairly hispec PC.
     
  6. edd

    edd
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    mmm didnt think of it that way, i though maybe the grapics card had some hidden geometry controlls, like you can move things up and down. didnt know hence i asked :)

    edd
     
  7. Mr.D

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    Whole pixel offsetting is easy : its not really rendering as such more a question of just varying the draw parameters.

    Actually warping the image is way more intensive. Warping is one of the most processor intensive 2d processes you can do. If I need to benchmark a machine or new bit of software I normally run a nasty hi res blur or warp through it. Sometimes you are looking at hours per frame for film res. Video res not as long but still nowhere near real time: 10s of seconds at best.
     
  8. edd

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    I understand the, but all i wanted to do was transform this \ / into | | this, or vice versa, i wasnt sure whether this would require a full warp mask type thing or just an equivelent of varying the draw perameters as you say.

    edd
     
  9. Mr.D

    Mr.D
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    Nope thats a subpixel warp.
     
  10. edd

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    ahhh pitty, will have to get me pj fixed :)

    edd
     
  11. cskates

    cskates
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  12. edd

    edd
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    pitty i have a radeon

    edd
     
  13. Mr.D

    Mr.D
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    And I bet it softens the image like billy oh.
     

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