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Image Projection for oriented images

Asked by Chandra Shekhar on 20 Feb 2013
I have input image and expected image in below link..
Please any one tell me how to achieve this projection and if input image having other type of orientation.
Thanks in advance.

  1 Comment

actually i tried like this
I = imread('img.jpg');
udata = [0 1];
vdata = [0 1]; % input coordinate system
tform = maketform('projective',[ 0 0; 1 0; 1 1; 0 1],...
[-4 2; -8 -3; -3 -5; 6 3]);
[B,xdata,ydata] = imtransform(I,tform,'bicubic','udata',udata,...
'vdata',vdata,...
'size',size(I),...
'fill',128);
imshow(I,'XData',udata,'YData',vdata), axis on
figure, imshow(B,'XData',xdata,'YData',ydata), axis on
this gives reverse operation what i am expecting. but i don't know how to choose the rows of projective in 'maketform', in order to reconstruct original image back.
This is just example,for different image how to choose the projective row in 'maketform'.

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