Estimate Homography to do 2D to 3D integration (32): Collecting Testing videos from Webcam (2D_Info)

I. Draft and modify my GUI for manually choosing markers but automatically record their position in 2D:

II. Collect 4 videos from Webcam:

    - These videos include Rotation, Zoom-in-&-Zoom-out, ViewpointChange, Tilt
    - Total are 703 frames
    - Frame size is 640x480

III.Using the tool showing in "I." for manually choosing markers but automatically record their position in 2D in each of these 703 frames:

    - 703 frames are belongs to the sum of the videos in "II."
    - Choose 8 selected points: 4 points to be the corresponding position of 3D selected ones (in green rectangle), and the rest of 4 points to be the testing data (in red circles).
    - The order of selection in each set of 4 points: 4->1->3->2