I am having a problem with my kinect patch. I’m designing a patch whereby i’m using the RGB from the kinect to track the coordinates of two different LEDs, this if fine for the X & Y but i need to track the Z axis. I have no idea how i can do this so any help would be very greatly received.

Cheers Ed

not that i can’t think of some ways, like relating the size of the tracked dots in pixels to distance, although that’s probably not gonna be very accurate at 640×480.

what you probably rather wanna do is combine the RGB and depth images, then do your color tracking and get the depth.

not entirely sure if it will work without more effort to superimpose RGB and depth correctly but you could try getting the Z from the depth map at the same XY coordinate as your dot is in the RGB image.

what are you using to read out the kinect?

I’m using jit.freenect.grab. That makes sense but how do i get a coordinate out of the depth map?

Cheers Ed