How to extract specific images from a library of images?

I have a folder which has 600 images, the images are named as 10000, 10001, 10002,... I have an excel file which has the information about the image number of interest. For example, I want image number 0,3,8,12,16,224 etc to be extracted from this library. How do I go about executing that? Any help would be appreciated.

Answer 1

[Stephan]

You can construct a string array of the desired file names like follows:

exceldata = [0,3,8,12,16,224];
filenames = string(10000 + exceldata)';
fileending = repelem(".jpg", numel(filenames), 1);
files = join([filenames fileending],"");
folder = repelem("C:\MyData\YourFolderName\", numel(filenames), 1);
fullFileNames = join([folder files],"")

in this exampe the result is:

fullFileNames = 

  6×1 string array

    "C:\MyData\YourFolderName\10000.jpg"
    "C:\MyData\YourFolderName\10003.jpg"
    "C:\MyData\YourFolderName\10008.jpg"
    "C:\MyData\YourFolderName\10012.jpg"
    "C:\MyData\YourFolderName\10016.jpg"
    "C:\MyData\YourFolderName\10224.jpg"

This result can be used to copy or move the files by looping through this string array.

Best regards

Stephan

[oshawcole]

Hello Sir,

Thank you so much for answering this. My images did not get copied in the new folder, I can see the file names, but my new folder is empty. Please help.

[Stephan]

please share the code you use, so that we can see what may be wrong

[oshawcole]

[ImgDir] = uigetdir;
cd(ImgDir)
img_list=dir('*.tif');
t=xlsread('C:\mydata\Desktop\folder\trial.xlsx');
filenames=string(10000+t);
fileending = repelem(".tif", numel(filenames), 1);
files = join([filenames fileending],"");
folder = repelem("C:\mydata\Desktop\NF1\", numel(filenames), 1);
fullFileNames = join([folder files],"");

[Stephan]

This code should give you a correct array of the file names you want - does it? If so you can use:

newfolder = "D:\Test"

for k = 1:numel(fullFileNames)
    copyfile(char(fullFileNames(k)),char(newfolder))
end

which should copy the files into the specified folder.

[oshawcole]

Thank you so much.

[Stephan]

This comment makes me assume it worked for you ;-)