How to save resized image with original filename to a folder.

3 次查看（过去 30 天）
Darren Brown
Darren Brown 2020-10-23
评论： Darren Brown 2020-10-29
Hi there,
I am trying to save a resized (smaller) image to a folder. I am doing image classification and having the resized images would be helpful.
I would like to store the resized images into a folder called "resized" or something like that.
Any thoughts? Thank you for any help you can offer.
Code below. Comments are from some of my trying to work it out myself.
clc
clear all
close all
load('Train_AlexNet_Feature')
load('Train_AlexNet_Label')
Test_AlexNet_Feature=[];
BT50=[];
mkdir('New Folder')
ds = imageDatastore('/Users/kimpitman/Documents/MATLAB/Vehicle/Test');
a=ds.Files;
for i=1:length(a)
[I,info] = readimage( ds , i);
g=imresize(I,[227,227]);
imshow(g)
net=alexnet;
net.Layers;
layer='fc7';
F=activations(net,g,layer,'outputAs','rows');
Test_AlexNet_Feature=[Test_AlexNet_Feature;F];
SVMModel=fitcsvm(Train_AlexNet_Feature,Train_AlexNet_Label,'KernelFunction','Linear');
[label,score]=predict(SVMModel,Test_AlexNet_Feature);
label=label;
if label(i,:)=='1'
display('This is BT-50')
BT=info.Filename
BT=string(BT);
BT50=[BT50;BT];
imwrite(g,fName(i),'.png');
%srcFiles = dir('/Users/kimpitman/Documents/MATLAB/Vehicle/Test'); % the folder in which ur images exists
%for i = 1 : length(srcFiles)
%filename = strcat('/Users/kimpitman/Documents/MATLAB/Vehicle/Testcopiedimages',srcFiles(i).name);
%im = imread(filename);
%newfilename=strcat('/Users/kimpitman/Documents/MATLAB/Vehicle/Testcopiedimages',srcFiles(i).name);
%imwrite(k,newfilename,'jpg');
%end
%end
%newfilename=ds.Files('/Users/kimpitman/Documents/MATLAB/Vehicle/Testcopiedimages',srcFiles(i).name);
%imwrite(g,newfilename,'jpg');
%imwrite(g,ds);
else
display('This is not BT-50')
BT=info.Filename
BT=string(BT);
BT50=[BT50;BT];
end
end
save('BT50')
T=table(BT50,label);
fname=sprintf('LinearTestMix159%s.xlsx',datestr(now, 'yyyymmddHHMM'));
writetable(T,fname,'Sheet',1)

请先登录，再回答此问题。

采纳的回答

Image Analyst
Image Analyst 2020-10-23
Try this:
% Define input folder location.
folder = '/Users/kimpitman/Documents/MATLAB/Vehicle/Test';
% Create output folder name.
outputFolder = fullfile(folder, '/resized');
% Make output folder if it exists.
if ~isfolder(outputFolder)
mkdir(outputFolder)
end
ds = imageDatastore(folder)
% Loop over all files.
for k =length(ds.Files)
% Get this filename.
thisFileName = ds.Files{k};
fprintf('Processing %s...\n', thisFileName);
% Read in the input image.
originalImage = imread(thisFileName);
% Display it.
imshow(originalImage);
drawnow;
% Find out just the base filename without the folder.
[thisFolder, baseFileNameNoExt, ext] = fileparts(thisFileName);
% Create output image by resizing....
fprintf(' Resizing %s...\n', baseFileNameNoExt);
resizedImage = imresize(originalImage, [227, 227]);
% Create the output filename which will be in the output folder.
outputFileName = fullfile(outputFolder, [baseFileNameNoExt, ext]);
% Write the image out to the output folder.
fprintf(' Saving %s...\n', outputFileName);
imwrite(resizedImage, outputFileName);
end
message = sprintf('Done processing %d images', length(ds.Files))
uiwait(helpdlg(message));
  3 个评论
显示 1更早的评论
Darren Brown
Darren Brown 2020-10-29
Magic! Thank you Image analyst.
Now I just need to work out how to integrate it into the original code (I am new to coding).
Thank you again for your help! I am grateful how quickly you were able to respond and with a solution!
Darren Brown
Darren Brown 2020-10-29
Oh, I just needed to put a "1:" to get it to work.
Thank you again for your help. Sorry for my late update.
%original code:
for k =length(ds.Files)
end
%changed to:
for k =1:length(ds.Files)

请先登录，再进行评论。

更多回答（0 个）

类别

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

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by