Detail lost showing images

Hi folks,

I'm working in MATLAB to generate some images. Let's say, I have an images A and B, both with dimensions of 900x900. After I have loaded both images into MATLAB with imread(), I try to display both images simultaneously using imshow([A,B],[]).

My problem is in the displayed window, I can see clearly that some details of each image (especially the edge part) are lost. This is very confusing since I'm pretty sure that the concatenated image doesn't exceed the maximum resolution of screen I have, which means MATLAB should display my images w/o downscaling. Any input? Thank you.

Regards,

Feng

Answer 1

[Thorsten]

900 x 1800 is pretty large.

You can check the screen size using

get(0,'ScreenSize')

If your image fits on the screen you have to keep in mind that you have to maximise that figure window to full size, and that then you have to subtract some pixels for the decoration of the window and the amount of gray background between the image and the border of the window.

If you want that every image pixel should be represented by a monitor pixel, you have to use

iptsetpref('ImshowInitialMagnification', 100)

If then after imshow your image does not fit on the screen, you get a

Warning: Image is too big to fit on screen; displaying at 67% 
> In images.internal.initSize (line 71)
  In imshow (line 309)

[FENG XU]

Hi Thorsten. Thank you for your response.

I did check all the command you mention, and I can confirm that the image fits on my screen with no warning. BTW, my screen resolution is 1920*1080.

[Thorsten]

Could you post the images A and B?

[FENG XU]

For sure! The original images are in format .tiff, so I put them into a .zip file. Sorry for any inconvenience and thank you for you kind help.

[Thorsten]

Hi FENG XU,

thank you for providing the images. To me everything looks fine:

[FENG XU]

Thorsten,

Sorry to accept late! I've figured it out. You are correct, the problem is solved after I switch to another computer with a higher resolution. I guess the decorations of the window really matter even there seems to be enough pixels left for them. Anyway, thank you so much for helping.

Feng