How process all images in one Time

4 views (last 30 days)
abdullah al-dulaimi
abdullah al-dulaimi on 4 Nov 2022
Commented: DGM on 4 Nov 2022
I have this code for only one image, How can i change code to process all images in one time.
clear all;
clc;
%% Getting the input images
% disp('Provide the main image...')
[img_file1, img_path1] = uigetfile({'*.png'});
img1 = imread([img_path1,img_file1]);
% disp('Provide the image to be concealed...')
[img_file2, img_path2] = uigetfile({'*.png'});
img2 = imread([img_path2,img_file2]);
%% Conditioning of images
%checking for coloured images
if length(size(img1))==3
img1 = rgb2gray(img1);
end
if length(size(img2))==3
img2 = rgb2gray(img2);
end
%checking for unequal sizes of both images
[r1,c1] = size(img1);
[r2,c2] = size(img2);
r = min(r1,r2);
c = min(c1,c2);
img1 = imresize(img1,[r c]);
img2 = imresize(img2,[r c]);
%% Performing steganography
disp('Performing steganography')
final_img = img1;
for i=1:r
for j=1:c
num1 = bitand(img1(i,j),248);
num2 = bitshift(img2(i,j),-5);
final_img(i,j) = bitor(num1,num2);
end
end
%% Recovering the concealed image
disp('Recovering the concealed image')
recovered_img = final_img;
for i=1:r
for j=1:c
recovered_img(i,j) = bitshift(final_img(i,j),5);
end
end

Answers (1)

Walter Roberson
Walter Roberson on 4 Nov 2022
You cannot process all of the images at the same time. imread() is not able to read more than one file at a time.
You can read the files one at a time. If you make the files all the same size, you can potentially combine the contents into a single array and process the array.
if length(size(img1))==3
img1 = rgb2gray(img1);
I would remind you of the hint I gave at the end of my answer to your previous question,
in particular the bit about how augmented image data store can automatically resize files and automatically convert to color or gray.

Categories

Find more on Convert Image Type in Help Center and File Exchange

Products

Community Treasure Hunt

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

Start Hunting!