how to get image from specific folder and resize each image and save them is a new folder

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i try below code, but it show error at 'thisimage' variable. whats the problem.
clc;
close all;
clear;
OutputFolder = 'D:\Datasets\handwritten-signatures\sample_Signature\edited'; % Set as needed [EDITED]
dinfo = dir('D:\Datasets\handwritten-signatures\sample_Signature\genuine\*.png');% image extension
for K = 1 : length(dinfo)
thisimage = dinfo(K).name;
Img = imread(thisimage);
Y = imshow(Img);
Gray = rgb2gray(Img);
i = imresize(Img, [227, 227], 'bilinear');
imwrite(i, fullfile(OutputFolder, thisimage)); % [EDITED]
end
  2 Comments
Jan
Jan on 27 May 2019
"it show error at 'thisimage' variable" - please post the complete error message. For solving a problem it is important to know, what the problem is.
Awais Khan
Awais Khan on 27 May 2019
Error using imread>get_full_filename (line 516)
File "NFI-00101001.png" does not exist.
Error in imread (line 340)
fullname = get_full_filename(filename);
Error in resizing_dataset_images (line 9)
Img = imread(thisimage);
above error show as a result of above provide code. but in data set file with this name exist.

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Accepted Answer

Murugan C
Murugan C on 27 May 2019
Edited: Rik on 27 May 2019
HI,
Before reading the image (imread), you shoud change directory, where the files are present, as like as below
clc;
close all;
clear;
OutputFolder = 'D:\Datasets\handwritten-signatures\sample_Signature\edited'; % Set as needed [EDITED]
dinfo = dir('D:\Datasets\handwritten-signatures\sample_Signature\genuine\*.png');% image extension
for K = 1 : length(dinfo)
thisimage = dinfo(K).name;
cd 'D:\Datasets\handwritten-signatures\sample_Signature\genuine\'
Img = imread(thisimage);
cd ..
Y = imshow(Img);
Gray = rgb2gray(Img);
i = imresize(Img, [227, 227], 'bilinear');
imwrite(i, fullfile(OutputFolder, thisimage)); % [EDITED]
end
  2 Comments
Rik
Rik on 27 May 2019
You shouldn't be using cd in your functions. imread will accept a full path without requiring the current folder to be changed. Also, why are you using clc,close all,clear? Most of the times that is cargo cult programming. (and you should use the layout tools to make your code more readable)

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More Answers (1)

Rik
Rik on 27 May 2019
This is how you can provide the full path to imread:
for K = 1 : length(dinfo)
thisimage = dinfo(K).name;
Img = imread(fullfile(dinfo(K).folder,thisimage));
Y = imshow(Img);
Gray = rgb2gray(Img);
i = imresize(Img, [227, 227], 'bilinear');
imwrite(i, fullfile(OutputFolder, thisimage));
end

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