manipulating each pixel in an image sequence
2 views (last 30 days)
Show older comments
Hi,
I have an image sequence of about 40 frames. I have some noise and out of plane motion in this sequence. I would like to look at each pixel in the 2D image over these 40 frames . How do I do that? How do I manipulate (reduce noise) and also draw information from each pixel (get FFT of the pixel over 40 frames).
0 Comments
Answers (2)
Walter Roberson
on 16 Mar 2022
k = 3;
dim = 3;
filtered_sequence = movmedian(ImageSequence, k, dim);
fft_of_sequence = fft(ImageSequence, [], dim); %fft over third dimension
0 Comments
yanqi liu
on 17 Mar 2022
yes,sir,may be use loop to process,such as
for i = 1 : 40
im = imread(fullfile(pwd, 'images', sprintf('%02d.jpg')));
for j = 1 : size(im, 3)
im2(:,:,j) = medfilt2(im(:,:,i));
end
im3 = mat2gray(log(abs(fft2(double(im2(:,:,1))))+eps));
figure(i);
subplot(1,3,1); imshow(im, []); title(sprintf('origin image %02d', i));
subplot(1,3,2); imshow(im2, []); title(sprintf('medfilt denoise image %02d', i));
subplot(1,3,3); imshow(im3, []); title(sprintf('fft image %02d', i));
end
0 Comments
See Also
Categories
Find more on Image Processing Toolbox in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!