load the movie file on matlab (check functions such as videoreader, etc), then extract and save the end-diastolic (ed) and end-systolic (es) frames. in matlab

To load a movie file in Matlab, we can use the VideoReader function. Here's an example:

main.m
vidObj = VideoReader('video_file.mp4');
40 chars
2 lines

This creates a VideoReader object that we can use to read frames from the movie file. To extract the end-diastolic (ED) and end-systolic (ES) frames, we need to do the following:

  1. Find the frame with maximum and minimum average intensity, respectively.
  2. Save the corresponding frames as ED and ES frames.

Here's the code for this:

main.m
vidObj = VideoReader('video_file.mp4');

% Initialize variables
maxAvgIntensity = -1;
minAvgIntensity = Inf;
edFrame = [];
esFrame = [];

% Loop over frames
for i = 1:vidObj.NumFrames
    % Read current frame
    frame = read(vidObj, i);
    
    % Compute average intensity of current frame
    avgIntensity = mean(frame(:));
    
    % Check if this is the ED or ES frame
    if avgIntensity > maxAvgIntensity
        edFrame = frame;
        maxAvgIntensity = avgIntensity;
    end
    
    if avgIntensity < minAvgIntensity
        esFrame = frame;
        minAvgIntensity = avgIntensity;
    end
end

% Save ED and ES frames to files
imwrite(edFrame, 'ed_frame.png');
imwrite(esFrame, 'es_frame.png');
707 chars
32 lines

This code reads each frame of the movie, computes the average intensity of the frame, and checks if it is the maximum or minimum average intensity seen so far. If it is, it saves the corresponding frame as the ED or ES frame. Finally, it saves the ED and ES frames to separate image files (in PNG format).

gistlibby LogSnag