How process all images in one Time

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abdullah al-dulaimi
评论： DGM 2022-11-4
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

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回答（1 个）

Walter Roberson
Walter Roberson 2022-11-4
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,
https://www.mathworks.com/matlabcentral/answers/1843178-ho-can-i-imread-all-images-in-the-path#answer_1090983
in particular the bit about how augmented image data store can automatically resize files and automatically convert to color or gray.

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