For Project 4, I extract data from images using XBox 360 Kinect.
I modified democode from Microsoft's website.
I get color and depth images from the demo program.
The demo doesn't come with a depth key for the gray scale, so I just put Kinect at different distances from the wall measure the gray scale, then plot the points and do a regression, to calibrate scale inches = 153 - 1.3 * luminocity.