ANPHY JOSE asked . 2023-03-02

MATLAB code for vedio edge detection

hello sir,

I need your help in matlab code for video edge detection .It's very urgent.please send the code.

urgent , Image Processing Toolbox , Object Analysis

Expert Answer

Prashant Kumar answered . 2025-03-23 03:09:36

Here's a simple MATLAB code example for performing edge detection on a video. The code uses the Canny edge detection method to process each frame of the video.

matlab

% Load the video file
videoFile = 'your_video_file.mp4';
videoReader = VideoReader(videoFile);

% Create a video writer to save the output
outputVideo = VideoWriter('output_video.avi');
open(outputVideo);

while hasFrame(videoReader)
    % Read the next frame
    frame = readFrame(videoReader);
    
    % Convert the frame to grayscale
    grayFrame = rgb2gray(frame);
    
    % Perform edge detection using the Canny method
    edgeFrame = edge(grayFrame, 'Canny');
    
    % Convert logical image to uint8 for video writing
    edgeFrame = uint8(edgeFrame) * 255;
    
    % Write the processed frame to the output video
    writeVideo(outputVideo, edgeFrame);
end

% Close the video writer
close(outputVideo);

disp('Edge detection video has been saved as output_video.avi');

Steps Explained:

Load the Video: Use VideoReader to load the input video file.
Process Each Frame: Loop through each frame of the video, convert it to grayscale, and apply the Canny edge detection method using the edge function.
Save the Output: Write each processed frame to a new video file using VideoWriter.

Replace 'your_video_file.mp4' with the path to your video file. This code will process the video and save the edge-detected version as output_video.avi.

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