Estimate Homography to do 2D to 3D integration (18): Extract known points in pairs automatically

I. Writing codes to draw graphs of (x, y, t) and (X, Y, Z)

    * Here, only shows the results of red color marker
    * In each video type, 1st image shows (x, y, t), 2nd image shows (X, Y, Z) 
            - x, y: coordinates in 2D (... the position located on a Kinect frame)
            - t: frame no.
            - X, Y, Z: coordinates in 3D (... the position located in the World)

    - Zoom:

    - Viewpoint_change:

    - Tilt:

    - Real case 1:

    - Real case 2: