How to convert a point in image imrotated with loose option to a point in image imrotated with crop option in Matlab? -


how find relation between image imrotated loose option image 1 , image imrotated crop option image 2 ? angle of rotation not necessary -45° ...

i = imread('cameraman.tif'); im1 = imrotate(i,-45);       % bbox option sets 'loose' default im2 = imrotate(i,-45,'nearest','crop'); % bbox option sets 'crop' figure(1); subplot(2,1,1), imagesc(im1), axis image; subplot(2,1,2), imagesc(im2), axis image;

enter image description here

i mean if choose point (x1,y1) im1 equation of relation (x2,y2) in im2 ?? looking loose2crop() equation ?

i found solution , please feel free check fun :) 

i = imread('cameraman.tif'); im1 = imrotate(i,-45); % image imrotated loose option im2 = imrotate(i,-45,'nearest','crop');% image imrotated crop option  % draw image 1 loose figure(1); subplot(2,1,1), imagesc(im1), axis image; drawnow;   %%get point title('select point'); hold on;  [p1] = ginput;  plot (p1(1),p1(2),'k*'); drawnow;  % convert loose p1 crop image  p2 = loose2crop(im1,im2,p1)  % draw image 2 cropped subplot(2,1,2), imagesc(im2), axis image, hold on; plot (p2(1),p2(2),'r*'); drawnow;  function p2 = loose2crop(im1, im2, p1)  [h1,w1] = size(im1); [h2,w2] = size(im2);  shift_h = (h1 - h2)/2 ; shift_w = (w1 - w2)/2 ;  p2(1) = p1(1) - shift_h ; p2(2) = p1(2) - shift_w ;

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