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how to generate random noise and fixed pattern noise in video

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ANUPRIYA NALLUSAMY
ANUPRIYA NALLUSAMY 2015-8-25
评论： Michael Bianchi 2020-11-3
how to add random and fixed pattern noise in video?

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回答（2 个）

Dinesh Iyer
Dinesh Iyer 2015-8-25
Anupriya,
You can use the imnoise function in the Image Processing Toolbox to add noise to an image. You can follow these steps:
  1. Read video into MATLAB one frame at a time using VideoReader.
  2. Apply noise on each frame using imnoise;.
  3. Write out frames into a video file using VideoWriter.
Hope this helps.
Dinesh
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ANUPRIYA NALLUSAMY
ANUPRIYA NALLUSAMY 2015-8-25
In the image processing toolbox,there is no function avaliable for random(3D) and fixed pattern noise(3D) for to add in video...how to add noise in video?.with example code

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Iftikhar Ahmad
Iftikhar Ahmad 2015-12-3
obj = mmreader('xylophone.mpg'); video = read(obj); nFrames = size(video,4);
for i = 1 : nFrames
I(:,:,:,i) = imnoise(video(:,:,:,i),'gaussian');
imshow(I(:,:,:,i));
drawnow;
end

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