Pixelated image when jit.window in fullscreen mode

Apr 7, 2008 at 3:46pm

Pixelated image when jit.window in fullscreen mode

I’m projecting a video file onto a large blank wall and need the image to be clear, at the moment when i put the jit.window into fullscreen mode the image is really pixelated, even if i do it on my computer screen. Is this a scaling issue, i.e, do i need to put more arguments in the jit.window object, or is it more complicate.
Suggestions please

Apr 8, 2008 at 3:31am

could be a resolution issue.
Sounds like you may need higher resolution source footage and/or a bigger jitter matrix if you’re generating effects and imagery procedurally.

You should runs some tests once you figure out how to display larger images/matrices for framerate vs. resolution.

Apr 8, 2008 at 9:00am

i don’t think it’s the footage because i made it myself at the highest quality possible.
Could you please explain what you mean by bigger matrix and framate test? I’m inexperienced with video and do not understand some of the terms

Apr 8, 2008 at 3:40pm

What are arguments in jit.window ?

Apr 8, 2008 at 5:33pm

try these

jit.qt.movie @adapt 1 @highquality 1
jit.window your_window_name your_movie_width your_movie_height

Apr 9, 2008 at 1:28pm

it doesn’t seem to like the argument highquality, when you say video hight and width do you mean the original footage or the size of the jit.pwindow?

Apr 9, 2008 at 2:18pm

post a patch !

Apr 9, 2008 at 9:11pm

If this is the same patch as the cv.jit.track one I suspect it is
because you are using a size of 160×120. You could try jit.dx.grab
640×480 instead of jit.dx.grab 160 120 and send it to a
jit.gl.videoplane with @transform_reset 2. Look at the help file of
jit.gl.videoplane if you need to.

I liked the patch though I have no idea what it does!


Apr 10, 2008 at 12:18pm

Try [jit.window @interp 1]

That’ll help smooth out any bumps.



Apr 12, 2008 at 2:32pm

Thanks alot for everyones help, it’s starting to work better now
Keep any further suggestions coming.

Apr 15, 2008 at 4:02pm

The advise on this thread has vastly improved my installation!

Thank you! – these forums are a ridculously helpfull source of information!



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