Im working on a patch where i want to ‘sense’ a room through motion tracking and use the tracking data to control parameters of the patch.
So i have a few questions regarding this:
So far ive managed to utilise the trautner freeframe to analyse movement. Im simply monitoring when there is a change in output values of the trautner and using this onchange to generate random numbers that are mapped to paramters which have an effect on the gfx.
Right now im using a 3chip dv cam in low light levels with slow exposure so i can pick up movement in the dark. When i go to set up the installation in a weeks time im told the room will be very dark and so i will have the use of a cam with nightshot or Infra-red.
Will the traunter still work with a cam with these settings? i will not have a chance to test before so id like to know if you can successfully use the traunter with infra red without any pitfulls.
Also i would like to know if there is a reliable way of tracking specific movement of bodies through a room with VVVV. What i really want to do is to track a room for movement and translate that in a meaningful way. A simple example would be that if a person moves across the camera field from left to right a quad moves from left to right too. Is this kind of operation possible, if so any leads?
i think the contour tracker should be the right one.
it´s a blob tracker which returns the xy position and the boundary size of every tracked object. but it could be hard to adjust with a noisy image, may you have to do some image processing before.
thankx for you reply - you seem to nearly answer all of my questions!
yeah im using version 10 and still it crashes after an hour or so. :(
I have to have this ready in a couple of days for a show, so any help greatly appreciated! :)
basically all im doing is using the cam to sense some change - not to actually track anything in the real sense. With the trautner im sampling one of the output slices to see when it changes from 0 to something and then using a change node to generate some random numbers. very simple.
perhaps there is another way of doing this with a different tracker?, i just cant work out how.
or is there anythihng else i can do to minimise these crashes?
zPH. can you describe the crash? the one i used to have (as mentioned above) popped up an error message and closed vvvv after hitting ok. what is happening with your patch?
also make sure you are using the latest camera-capture drivers and latest graphiccard drivers. what camera is it by the way (usb, firewire, analog-capture card)? what resolution are you caputring at? try lowering the resolution if possible. for sensing motion in areas even 160x120 could suffice.