Apply colormap to a library of iamges

Question

jlouise2022 2022-7-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1755360-apply-colormap-to-a-library-of-iamges

回答： jlouise2022 2022-7-7

采纳的回答： jlouise2022

Is there a way to apply a specific colormap to a set of images?

I have lots of greyscale images (92) in my directory. Have tried lots of things but can't seem to apply one map to the entire set.

I can only achieve it by doing them separately. e.g.:

A = imread("1698_gs_histeq.jpg");
imshow(A)
colormap ("winter")

Thanks!

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Simon Chan 2022-7-7

在 MATLAB Online 中打开

Something like this?

imshow(A,'Colormap',winter)

jlouise2022 2022-7-7

I can only get that to work with a single image, not the entire set. I'm trying to write a function/for loop so that the colormap is applied to all 92 and they are saved in the directory.

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Answer 1

jlouise2022 2022-7-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1755360-apply-colormap-to-a-library-of-iamges#answer_1002375

在 MATLAB Online 中打开

Nevermind, fixed it.

If anyone has the same issue, here is my code:

for k = 1:numel(filenames)
  filename   = filenames(k).name;
  equalHist     = imread(filename);
  [~,name,~] = fileparts(filename);
  gsFilename = sprintf('%s_autumn.jpg', name);
  imwrite(equalHist, colormap(autumn), gsFilename);
end