Forums > Jitter

Pixelated image when jit.window in fullscreen mode

April 7, 2008 | 3:46 pm

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

April 8, 2008 | 3:31 am

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.

April 8, 2008 | 9:00 am

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

April 8, 2008 | 3:40 pm

What are arguments in jit.window ?

April 8, 2008 | 5:33 pm

try these @adapt 1 @highquality 1
jit.window your_window_name your_movie_width your_movie_height

April 9, 2008 | 1:28 pm

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?

April 9, 2008 | 2:18 pm

post a patch !

April 9, 2008 | 9:11 pm

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 with @transform_reset 2. Look at the help file of if you need to.

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


April 10, 2008 | 12:18 pm

Try [jit.window @interp 1]

That’ll help smooth out any bumps.



April 12, 2008 | 2:32 pm

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

April 15, 2008 | 4:02 pm

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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Forums > Jitter