Hi Nirit, you can use the WindwoButtonMotionFunction of the Figure, your image 1 is in. Here is a quick example:
function m_easy_mouse_handling_example()
%example data
a = [1,1,1;2,2,2;3,3,3];
b = [10,12,14;16,18,20; 22 24 26];
%show the two figures
h_fig1 = figure()
h_ax1 = axes('Parent',h_fig1);
h_im1 = imagesc(a,'Parent',h_ax1);
h_fig2 = figure()
h_ax2 = axes('Parent',h_fig2);
h_im2 = imagesc(b,'Parent',h_ax2);
%set function which is used when mouse is over figure 1 (h_fig1)
set(h_fig1,'WindowButtonMotionFcn', @MouseMoveFcn)
function MouseMoveFcn(varargin)
try
mouse_pos = get(h_ax1, 'CurrentPoint');
ii = round(mouse_pos(1,1));
jj = round(mouse_pos(1,2));
%show value of image 2 in command line
disp(num2str(b(jj,ii))) %please check, if order of dimensions is correct
catch
%catch error, if you are outside the image (to do)
end
end
