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matlabcell-array

error in storing captured images in a structure

I want to capture 100 images from my webcam and then store them in a structure. I'm trying to do it like this but i'm getting the error, 'subscripted assignment dimensions mismatch'.

The code is this:

sep_images=struct('images',[]);


vid=videoinput('winvideo',1,'YUY2_320x240');

set(vid,'FramesPerTrigger',Inf);
set(vid,'ReturnedColorspace','rgb');

vid.FrameGrabInterval=1;

start(vid)


for num_frames= 1:100

    im=getsnapshot(vid);

   sep_images.images(num_frames)=im;

end

stop(vid);

and it is giving me the error in this statement, sep_images.images(num_frames)=im;. If someone has the idea of how to do it? please let me know.

Solution

  • I think you intended the images field to be a cell.

    Initialize like:

    sep_images=struct('images',{[]})

    Assign like:

    sep_images.images{num_frames}=im;

    Just remember to access it with curly braces too (i.e. I = sep_images.images{iframe}).