How can i save images at the end of every iteration?

3 次查看(过去 30 天)
I have a code in which I am taking images from 2 different folders, processing it according to my need and trying to save the output of every iteration in a separate folder. But as I try to save the file with the help of imwrite command, I am getting the following error:
Unable to open file "Img.jpg" for writing. You might not have write permission.
I tried using different formats of images. I also tried fullfile, sprintf but its still giving the same error.
Here's the code:
raw_folder = 'C:\raw';
back_folder = 'C:\background';
raw_filename = dir(fullfile(raw_folder,'*.tif'))
back_filename = dir(fullfile(back_folder,'*.tif'))
total = numel(raw_filename)
for n = 1:total
r = fullfile(raw_folder, raw_filename(n).name);
b = fullfile(back_folder, back_filename(n).name);
R = imread(r);
B = imread(b);
%---------------------------------------------------
% Some code.....
%---------------------------------------------------
figure;imagesc(out,[50 60]);
colormap(jet(255));
fileLoc = 'C:\newcolor';
fname = fullfile(fileLoc, strcat('Image',num2str(n),'.jpg'));
imwrite(out,fname,'jpg');
% path = 'C:\color';
% imwrite(out,fullfile(path,strcat(num2str(i),'.jpg')));
%---------------------------------------------------
end
How should I modify this code? Thank you.
  4 个评论
Rik
Rik 2021-6-10
And the code I posted tries to determine if Matlab can write in that folder at all.

请先登录,再进行评论。

采纳的回答

Image Analyst
Image Analyst 2021-6-12
Try it this way:
% By Image Analyst
clc; % Clear the command window.
clearvars;
close all; % Close all figures (except those of imtool.)
workspace; % Make sure the workspace panel is showing.
fontSize = 20;
format compact;
raw_folder = pwd; %'C:\raw';
back_folder = pwd; %'C:\background';
raw_filename = dir(fullfile(raw_folder,'*.tif'))
back_filename = dir(fullfile(back_folder,'*.tif'))
numRawFiles = numel(raw_filename)
outputFolder = fullfile(raw_folder, 'Output');
if ~isfolder(outputFolder)
fprintf('Creating new folder for output called "%s".\n', outputFolder);
mkdir(outputFolder);
end
for n = 1:numRawFiles
inputFileName = fullfile(raw_folder, raw_filename(n).name);
backgroundFileName = fullfile(back_folder, back_filename(n).name);
R = imread(inputFileName);
B = imread(backgroundFileName);
%---------------------------------------------------
% Some code.....
out = R;
%---------------------------------------------------
hFig = figure;
imagesc(out,[50 60]);
colormap(jet(255));
drawnow;
%---------------------------------------------------
baseFileName = sprintf('Image %2.2d.png', n); % Don't use JPG - use PNG instead.
fullOutputFileName = fullfile(outputFolder, baseFileName);
fprintf('Writing out "%s"\n', fullOutputFileName);
imwrite(out, fullOutputFileName);
% Delete figure
close(hFig);
end
  6 个评论
Image Analyst
Image Analyst 2021-6-13
@Khushi Patni in the code you showed, n was not a vector, but then you did leave out some code where maybe you reassigned n. You should not reassign the loop iterator variable inside a loop. It will use it with your new value but once the loop starts again, it will ignore your change. My code did not have n as a vector. So, if we're done here, could you "Accept this answer"? Thanks in advance.

请先登录,再进行评论。

更多回答(1 个)

Image Analyst
Image Analyst 2021-6-10
Try this:
fileLoc = 'E:\Internship\SAMEER\dataset\CONTROLLED\advanced\newcolor';
if ~isfolder(fileLoc)
fprintf('Creating new folder called "%s".\n', fileLoc);
mkdir(fileLoc);
end
  6 个评论
Rik
Rik 2021-6-12
Why did you change your code so that n is a vector with non-integer values, but didn't say anything about what code you were using?

请先登录,再进行评论。

类别

Help CenterFile Exchange 中查找有关 Get Started with MATLAB 的更多信息

产品


版本

R2021a

Community Treasure Hunt

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

Start Hunting!

Translated by