How to save the proceesed image in the same size as input image

Hi,

I need to save the proceesed image in the same size (width and height) as the input image. I tried below script, but it still saves teh image in the smaller size than the input same.

width=2472;
height=2062;
set(gcf,'position',[x0,y0,width,height])

[Cris LaPierre]

There is no save command in your code.

See this page: https://www.mathworks.com/help/matlab/creating_plots/save-figure-at-specific-size-and-resolution.html

[MechenG]

I just pasted only the part of my code which is dealing the image size.

[MechenG]

And I need to save my image without any axis. For this I am using axis off command

Answer 1

[Matt J]

outputImage=imresize(outputImage,OutputSize=size(inputImage));

imwrite(outputImage , filename);

[MechenG]

This works perfectly in terms of preserving teh size. However my image looks completely different if I use imagesc () instead of imshow ()

Below is my complete code

II= imread("Input Image.jpeg");
II = rgb2gray(II);
II = imgradient(II);
figure ()
imshow(Gmag);

Unrecognized function or variable 'Gmag'.

colormap("gray");
axis off
outputImage=imresize(Gmag,OutputSize=size(II));
imshow(outputImage)
axis off
imwrite(outputImage , 'output.png');

[Matt J]

Your code produces an error, as shown in the Run output above.

[MechenG]

Ah, sorry.. Below is teh corrected done

II= imread("Input Image.jpeg");
II = rgb2gray(II);
[Gmag,Gdir] = imgradient(II);
figure ()
imshow(Gmag);
colormap("gray");
axis off
outputImage=imresize(Gmag,OutputSize=size(II));
imshow(outputImage)
axis off
imwrite(outputImage , 'output.png');

[MechenG]

The below command solved the issue! Now, I am getting teh desired result.

imwrite( ind2rgb(im2uint8(mat2gray(Gmag)), gray(256)), 'output.png')

[Image Analyst]

You could do it more simply like this:

outputImage = mat2gray(GMag); % Convert to gray scale image in the range 0-1.
imwrite(outputImage, 'output.png'); % Will save as PNG in the range 0-255.

No need for calling im2uint8(), and ind2rgb(), and gray(), unless for some reason you wanted your grayscale image to be a true color RGB image (but still appearing as grayscale).

[MechenG]

This is good!. Thanks