get the position of image ploted with imshow

hello, I am using matlab GUI for a simple annotator. everytime i need to show some images, for which i am using imshow. now, images are of different sizes and aspect ratios. I want to find the exact position of displayed image on the screen. how to do it?

I have use axes in GUIDE to plot images. imshow(img,'parent',handles.axes1) displays the image in the given axis but also with different positions. get(handles.axes1,'position') gives constant position which i set in GUIDE. but i want a image position after imshow is used.

Thanks in advance