lab_07.asv

video_1 = 'videos/Walk1_CAVIAR.mp4';
v_reader_1 = VideoReader(video_1);
v_player_1 = vision.VideoPlayer('Name', 'Output_Image', 'Position', [750,200,640,360]);
v_player_2 = vision.VideoPlayer('Name', 'Output_Image', 'Position', [100,200,640,360]);
video_1_fps = v_reader_1.FrameRate;
v_input_1 = videoinput('macvideo', 1);
N = 300;
v_input_1.FramesPerTrigger = N+30;
h1 = fspecial('sobel');
h2=h1';

while(v_input_1.FramesAcquired < N)
    frame = getsnapshot(v_input_1);
    frame_grey = rgb2gray(frame);
    sobel_gradient = abs(conv2(h1, frame_grey)) + abs(conv2(h2,frame_grey));
    sobel_max = max(sobel_gradient(:));
    sobel_show = uint8(round(255*sobel_gradient/sobel_max));
    v_player_2(sobel_show);
    v_player_1(frame);
end