MATLAB: Check filename of the input image

check filename of input image

I wanna make sure the filename of input image is same as what I want. I need it to get into if-else statement.

For example(some sort like this):

a = imread('img.jpg');

if(image_wanted == img.jpg) for(k =1:5) x(k) = k; end end

Best Answer

use strcmpi:

if strcmpi(image_wanted, 'img.jpg')
    % Name matches
else
    % Name does not match.
end

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MATLAB: What changes are to be made in the following code to convert all the images in grayscale

Code: Call the all image in the folder on by one, convert to grayscale and save it one by one in the mentioned path destination(im1,im2,im3,im4......)

path_directory='folder_name_here'; % 'Folder name'
original_files=dir([path_directory '/*.jpg']); %Note on Image Format
for k=1:length(original_files)
    filename=[path_directory '/' original_files(k).name];
    image_ogi=imread(filename);
    gray=rgb2gray(image_ogi);
    destination='D:\folder_name_destinatiomn\im';  %Complete path of the folder
    imwrite(gray,[destination,num2str(k),'.png']); %Change the image formta as per desired image format
end

MATLAB: Problem in writing files

The problem is likely caused by the fact that your images are actually written to a different directory than you think.

I strongly recommend using fullfile rather than trying to concatenate paths and filenames.

Start with something like this:

D = 'E:\phd\zahra taati\extract only heart\crop100-112\';
S = dir(fullfile(D,'*.jpg'));
for k = 1:numel(S)
    F = fullfile(D,S(k).name);
    I = imread(F);
    J = ... do whatever you want with image I
    G = fullfile(D,['cropped',S(k).name]); % you forgot the path here!
    imwrite(J,G);
end

If you want to change the file extension then use fileparts to get the filename, then simply append the desired extension to the name.

Best Answer

Related Solutions

MATLAB: What changes are to be made in the following code to convert all the images in grayscale

MATLAB: Problem in writing files

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