CODEWITHSUNDEEP
matlabimage-processingvideo-capturevideo-processing
Poppy
Poppy

Reputation: 3

Read video frame by frame and show picture each frame by using Matlab

I am newly working with Matlab. Now, I'm doing a small project about image processing. I want to read a video frame by frame and find intensity of each frame. Help me,please

Read video code :

** It can't use hasFrames ** error : Undefined function 'hasFrame' for input arguments of type 'VideoReader'.

Thank you very much.

Upvotes: 0

Views: 3363

Answers (1)

rayryeng
rayryeng

Reputation: 104464

There is no such thing as hasFrames in MATLAB for the VideoReader class.

There is a function called hasFrame in MATLAB: http://www.mathworks.com/help/matlab/ref/videoreader.hasframe.html, but it only exists as of R2014b. The documentation for R2014b was just released last week, and I prematurely said that there wasn't a function called hasFrame because I have never seen it with the VideoReader class that I am used to. I currently use R2013a. Check out this thread from MathWorks for more details: http://www.mathworks.com/matlabcentral/answers/157477-unable-to-read-and-playback-movie-file

This error is probably happening because you don't have the latest version of MATLAB. If you want to read a frame from the video file using the VideoReader class, use the readFrame function after you read in the video from file: http://www.mathworks.com/help/matlab/ref/videoreader.readframe.html. Don't use hasFrame. You can always check to see if the matrix that is returned from readFrame is empty which could symbolize whether your video has a frame available or not.

Calling readFrame will provide you a video frame where you can do your analysis. You call it each time to grab the next frame in the video.

Good luck!

Upvotes: 3

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