MATLAB: How could I make the figure window show the actual size of a picture

figureimageImage Processing Toolboxsuppress warnings

I want to use the imshow command to show a picture in a figure window, but the picture is too big, and the command window shows that Warning: Image is too big to fit on screen; displaying at 33%. Actually, the picture is designed to cover all the screen of the computer. Thank you very much for your help.

Best Answer

It will show the whole picture, scaled to fit the axes. To turn off warnings, see my attached utility.

To zoom pixel-for-pixel, see my attached zoom demo.

Related Solutions

MATLAB: Detail lost showing images

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)

MATLAB: Open a transparent png and a jpg background together on a single graphical window

bgimage = imread('e8b66924592e1115398fe4a53bd6415c.jpg');
imshow(bgimage);
hold on;     %so the second image is displayed on top of the first
[fgimage, ~, alpha]  = imread('Abstract-Circular-Design.png');
hfg = imshow(fgimage);
hfg.AlphaData = alpha;    %set transparency
hfg.XData = [100 500];   %change position and size as appropriate
hfg.YData = [100 500];

Best Answer

Related Solutions

MATLAB: Detail lost showing images

MATLAB: Open a transparent png and a jpg background together on a single graphical window

Related Question