how to find the distance between two point in a video while playing video?

hi i have a video that there are two points in it that the distance between them changing in video. so i want to find the displacement of these two points while video is playing and their distances change.How can i do it? thank you for your help.

Answer 1

[Takuji Fukumoto]

You can get each frame with the following code. And deal with it as an image.

vidobj = vision.VideoFileReader('filename')
viewer = vision.DeployableVideoPlayer;

for N = 1:numframe
I = step(vidobj); 
% write image processing algorithm here
Iout = *******
step(viewer, Iout)
end

where, numframe is number of frame.

Computer Vision system toolbox is required.