Linden

I am doing a slit scan installation where i grab a videostream with an Logitech Hd C615 webcam. The processed images is projected with two beamers (800 * 600 each) which are combined through a Matrox Dualhead.

Cause i am doing a slit scan i use a internal resolution off 800 * 600 and gave the jit window a size of 1600 600.

My problem is that the image is kind of grainy cause it is a low light situation. It seems that the camera automatically adjusts the brightness...

Are there any filters or slab methods i could use to make the image smoother?

And is it ok to scale the output window or would it be better to grab the desired resolution in the first place, scale it down for processing and then again scaling it up?

I am doing a slit scan installation where i grab a videostream with an Logitech Hd C615 webcam. The processed images is  projected with two beamers (800 * 600 each) which are combined through a Matrox Dualhead.
Cause i am doing a slit scan i use a internal resolution off 800 * 600 and gave the jit window a size of 1600 600.

My problem is that the image is kind of grainy cause it is a low light situation. It seems that the camera automatically adjusts the brightness...
Is there a way to turn this off?
Are there any filters or slab methods i could use to make the image smoother?
And is it ok to scale the output window or would it be better to grab the desired resolution in the first place, scale it down for processing and then again scaling it up?


how-to-improve-video-quality-for-an-installation-help-needed

Turn of gamma correction? You wouldnt see anything because there's not enough light. Your camera might have adjustments for it though. Scaling always incurs losses, but in the end if you got crappy footage it wont be noticable. If image data could be fed through avisynth (ie frameserving) you would have a plethora of filtering options available, otherwise your stuck with whatever jitter has to offer.

you can send setting to jit.qt/dx.grab and tweak the settings of camera.

if indeed the light conditions are too low you can use infra red lighting, if your camera doesnt block it :) check also this thread: 

https://cycling74.com/forums/reduce-camera-noise

you can send setting to jit.qt/dx.grab and tweak the settings of camera.
if indeed the light conditions are too low you can use infra red lighting, if your camera doesnt block it :) check also this thread: https://cycling74.com/forums/reduce-camera-noise


how to improve video quality for an installation? help needed!