MATLAB: Hello, I have a final project for video processing, but i am stuck. I only could make the video work, and got snapshots, and i am not really sure that works.

Question

The idea is, while the video is on, each 5 frames will take a picture or snapshot and then identify if match with any letter. In sum, is a hand language translator in video streaming. I can realize how to create a data base for the images, i want to use edge detection to this comparing process. I want to know how to save images (like a database) and then when a image that is on the video is equal to one of the data base it will tell which character i am calling. Thanks a lot.

this is what i got (I know that is not much but, i don't have experience with video streaming processing):

vid= videoinput('winvideo',1,'MJPG_1280x720');

set(vid,'FramesPerTrigger',inf);

set(vid,'ReturnedColorSpace','grayscale');

vid.FrameGrabinterval=5;

start(vid);

while(vid.framesAcquired<=100)

data=getsnapshot(vid);

    dif_im2=im2bw(data, graythresh(data));
    dif_im=edge(dif_im2);

Answer 1

I haven't used it (I always use getsnapshot()), but have you looked at getdata(vid, 5) to get 5 frames out of the video stream?