3-D Video Processing in MatLab

Hey guys,

I am trying to create a program in Matlab and am just looking for some kind of starting point because I am not very sure where to begin. I had basic MatLab training in school and taught myself some image processing using google a lot, but now I have to create a program for video processing. The idea for the program is to be able to take a video of someone turning their head and to track the point on their face that is right above their nose and between their eyes (a rubber marker will be placed at this position on their face). I have to be able to calculate the distance they have turned their head and also be able to find the angle of the head turn (at any point during the motion). If anybody can suggest any tutorials to read/watch or any functions to become familiar with for this code, it would be a great help!

Thanks!!