Reading and displaying images from a Directory.

Hi, I have to read images from a directory and then according to whether the number of images are even or odd, I need to display some from of them. If even images then I need to display color and gray version. If odd I need to display to gray and histogram version. I have my code, but when I run it all it does is show the m-file name. PLEASE HELP!!!! Here's the code:

jpgImages = dir('Pictures.jpg');
numImages = length(jpgImages);
if mod(numImages, 2) == 0
    for i = 1:numImages
        filename = strcat('Pictures',jpgImages(i).name);
        A = imread(filename);
        B = rgb2gray(A);
        subplot(1,2,1), imshow(A)
        subplot(1,2,2), imshow(B)
    end
else
    for i = 1:numImages
        figure
        subplot(1,3,1), imshow(B)
        subplot(1,3,2), imhist(B)
    end
end

THANKS!

Answer 1

[Walter Roberson]

Your code does not load any images or define "B" when the number of images is odd.

dir('Pictures.jpg') is going to only find (at most) one file "Pictures.jpg", unless "Pictures.jpg" happens to be the name of a directory. If it is the name of a directory then (A) that is confusing; and (B) remember to eliminate "." and ".." from the list.

Your line

filename = strcat('Pictures',jpgImages(i).name);

does not appear to account for the directory separator. Consider using fullfile()