How does the imreisze function works?

Hello everyone. I was trying out the built-in hallway photo in MATLAB. I resized it by 1.5 times and 2 times than the original image. But somehow the 1.5 times version looks bigger to the naked eye? For low-res images, 1.5 times and 2 times resized images look their size though.

I was wondering if one could explain how the resize function is working here. Thanks!

Answer 1

[Image Analyst]

If the image cannot fit fully on the screen, it will reduce the axes control until it will fit comfortably. Maybe the 1.5 just barely fit but the 2 would not and it resized the 2 to be smaller than the 1.5. You can always turn on the tick marks to see the actual pixel count:

axis('on', 'image');

Also, see attached zooming example.

[John Doe]

Thanks for the neat explanation.

If MATLAB resized the 2 to fit the window, then will it still be the double in size and greater than 1.5 if I save it?