MATLAB: Quality for Image in matlab gui

guiimageplot imagequalityshow image

Hi, I am trying to load with imread a .png image and after to plot it (i.e show it) with imshow. However, even if my image has a good quality, when I plot it (show it) it has lower quality! Do you know an solution for this? Or why this is happening in order to fix it? Do I need another image format? I tried jpeg and the same problem takes place! Thank you in advance!

Best Answer

If you display a large image in a smaller area, or if you display a small image in a larger area, then the quality will not be high.
If you have a small image and you are using image() or imagesc() to display it, then use
axis image
to tell MATLAB to use one pixel per array element. That could end up showing a small image, but the quality will be preserved.