How can i save images at the end of every iteration?
3 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Khushi Patni
am 10 Jun. 2021
Kommentiert: Khushi Patni
am 13 Jun. 2021
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 Kommentare
Rik
am 10 Jun. 2021
And the code I posted tries to determine if Matlab can write in that folder at all.
Akzeptierte Antwort
Image Analyst
am 12 Jun. 2021
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 Kommentare
Image Analyst
am 13 Jun. 2021
@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.
Weitere Antworten (1)
Image Analyst
am 10 Jun. 2021
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 Kommentare
Rik
am 12 Jun. 2021
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?
Siehe auch
Kategorien
Mehr zu Convert Image Type finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!