How can i make an array of 100 images ?

I want to perform some feature vector operations on 100 images directly , how can i do that?

Answer 1

[Guillaume]

You didn't give enough information to answer in any detail (for example what is the size of the images, how many channels, how are they stored, etc.), so:

If the images are all the same size concatenate them in a new dimension (dim 3 for single channel, dim 4 for RGB) with cat

If they're all different size, use a for loop.

[Himanshu]

They are of different sizes RGB image .....Below is the code

 image_folder = 'C:\Users\user 1\Desktop\New folder (2)\my code\rear'; %  Enter name of folder from which you want to upload pictures with full path

filenames = dir(fullfile(image_folder, '*.png')); % read all images with specified extention, its jpg in our case total_images = numel(filenames); % count total number of photos present in that folder

 for n = 1:total_images
  full_name= fullfile(image_folder, filenames(n).name);         % it will specify images names with full path and extension
our_images = imread(full_name);                 % Read images  
   figure (n)                           % used tat index n so old figures are not over written by new new figures
    imshow(our_images)                  % Show all images
 end

[Guillaume]

Change your loop to:

files = dir(fullfile(image_folder, '*.png')); %filename as a variable name is not accurate
total_images = numel(filenames)
for n = 1:total_images
    our_images{n} = imread(fullfile(image_folder, file.name));
    feature{n} = your_feature_code(our_images{n});
    %display code if you wish
    %...
end

This assumes your_feature_code returns something else than a scalar. If it returns a scalar you can replace the {} with ()

[amara zafar]

my images arre in tiff format does it work same way

[Walter Roberson]

Yes, you can use imread() with tif images. However, tif can store multiple images in the same file, so in some circumstances you might need to take extra steps.

Answer 2

[Himanshu]

image_folder = 'C:\Users\user 1\Desktop\New folder (2)\my code\rear'; %  Enter name of folder from which you want to upload pictures with full path

filenames = dir(fullfile(image_folder, '*.png')); % read all images with specified extention, its jpg in our case total_images = numel(filenames); % count total number of photos present in that folder

 for n = 1:total_images
  full_name= fullfile(image_folder, filenames(n).name);         % it will specify images names with full path and extension
our_images = imread(full_name);                 % Read images  
   figure (n)                           % used tat index n so old figures are not over written by new new figures
    imshow(our_images)                  % Show all images
 end

Answer 3

[Stalin Samuel]

for example if u have images named as 1.jpg,2.jpg,....n.jpg then

for i = 1:no_of_images currentimage = imread( sprintf('ur_image directory_folder/%d.JPG',i) ); //your feature calculation feature(i)=your calculation end