How to save image in directory in MATLAB

5 次查看（过去 30 天）
Stephen john
Stephen john 2022-3-18
评论： Bjorn Gustavsson 2022-3-18
Hello everyone , i hope you are doing well.
i have the following code in which i create six directory and save images to corresponding directory,
I want to create a directory in which all these directory are subdirectory and save images to corresponding directory
Can anybody help me
for example a directory created name 'Dataset' and all directory ('C1','C2','C3','C4','C5','C6') are in this one directory and save images to corresponding directory
[labelNums,~,labelIdx] = unique(labels,'rows');
labelStrs = {'C1','C2','C3','C4','C5','C6'};
%% make the folders
for ii = 1:numel(labelStrs)
labelStr = labelStrs{ii};
if ~isfolder(labelStr)
mkdir(labelStr);
end
end
[numImages, lenImage] = size(Dataset);
imSz = 1000; % assuming images are 1000x1000
imbg = false(imSz);
imfg = ~imbg(1,1);
imSizeOut=[1000 1000];
for imNum = 1:numImages
imData = round(Dataset1000(imNum,:));
[~,Y] = meshgrid(1:imSz);
% black and white image
BW = imbg;
BW(Y==imData)=imfg;
% resize (from 1000x1000)
BW=imbinarize(imresize(double(BW),imSizeOut));
% convert to uint8 (0 255)
im = im2uint8(BW);
im = flipud(im);
folderName = labelStrs{labelIdx(imNum)};
im_FullFilename = fullfile(folderName,sprintf('im_%06g.png',imNum));
imwrite(im,im_FullFilename);
end

请先登录，再回答此问题。

回答（1 个）

Bjorn Gustavsson
Bjorn Gustavsson 2022-3-18
For this type of folder-related work I typically define a basedir that make it possible to run the script from any directory:
basedir = fullfile('mnt','data','DataSet')
% On Linux/Unix-type filesystems this will make basedir
% '/mnt/data/DataSet'
Then you can generate the full path to the directory by changing either to
folderName = fullfile(basedir,labelStrs{labelIdx(imNum)});
im_FullFilename = fullfile(folderName,sprintf('im_%06g.png',imNum));
or
im_FullFilename = fullfile(basedir,folderName,sprintf('im_%06g.png',imNum));
HTH
  3 个评论
显示 1更早的评论
Bjorn Gustavsson
Bjorn Gustavsson 2022-3-18
OK, then you will have to make a similar enough modification of your first loop, from:
for ii = 1:numel(labelStrs)
labelStr = labelStrs{ii};
if ~isfolder(labelStr)
mkdir(labelStr);
end
end
to something like:
if ~isfolder(basedir)
mkdir(basedir)
end
for ii = 1:numel(labelStrs)
dirname = fullfile(basedir,labelStrs{ii});
if ~isfolder(dirname)
mkdir(dirname);
end
end
To get more relevant help it will help if you include error-messages and other relevant informatinon in addition to the "it doesn't work" that doesn't tell us anything relevant for bug-hunting.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 File Operations 的更多信息

标签

产品


版本

R2021b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by