using getframe to separate frames from a video...need easy code.

Question

Yagnaseni Roy 2011-10-16

0
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https://ww2.mathworks.cn/matlabcentral/answers/18413-using-getframe-to-separate-frames-from-a-video-need-easy-code

Fractogene is the name of my video....

I tried:

for frame = 1:number
fractogene(frame)= getframe;
end
    fractogene(117)
ans = 
           cdata: [240x320 uint16]
        colormap: [0x3 double]

As you can see, I got a value...Does this mean anything at all?

How can I plot it, as I didn't get a plot...

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Answer 1

Walter Roberson 2011-10-16

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https://ww2.mathworks.cn/matlabcentral/answers/18413-using-getframe-to-separate-frames-from-a-video-need-easy-code#answer_24718

在 MATLAB Online 中打开

image(fractogene(117).cdata)

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Yagnaseni Roy 2011-10-17

I would rather like to view my images as a montage and attach a histogram to each of them to....I am able to make an image into a histogram using imhist function, but the image itself goes away....i want BOTH the image and the histogram to be viewable at the same time and all the frames should be arranged in a montage..

Walter Roberson 2011-10-17

Use subplot() to arrange the images. Note though that if you have a lot of images, the plots are going to come out very small, so you may wish to look in the MATLAB File Exchange to find one of the various contributions that offers a scrollable image area.

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Answer 2

Image Analyst 2011-10-16

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No that doesn't mean anything. You're getting the data in an axes but you haven't loaded anything into the axes, at least not in the code you've shown.