[panotools-cvs] SF.net SVN: panotools:[994] branches/libpano_gsoc2009_mosaic/matlab/ mosaic_v6.m

[<dk...@us...>]

Revision: 994
          http://panotools.svn.sourceforge.net/panotools/?rev=994&view=rev
Author:   dkg5
Date:     2009-06-16 22:41:43 +0000 (Tue, 16 Jun 2009)

Log Message:
-----------
Added MATLAB script

Added Paths:
-----------
    branches/libpano_gsoc2009_mosaic/matlab/mosaic_v6.m

Added: branches/libpano_gsoc2009_mosaic/matlab/mosaic_v6.m
===================================================================
--- branches/libpano_gsoc2009_mosaic/matlab/mosaic_v6.m	                        (rev 0)
+++ branches/libpano_gsoc2009_mosaic/matlab/mosaic_v6.m	2009-06-16 22:41:43 UTC (rev 994)
@@ -0,0 +1,42 @@
+clear all; 
+%close all;
+
+% make synthetic image of a square
+im = zeros(200,200);
+pixsel = 50:150;
+
+im(pixsel,50:51) = 255;
+im(50:51,pixsel) = 255;
+im(pixsel,150:151) = 255;
+im(150:151,pixsel) = 255;
+
+% projective transformation for slant
+udata = [-1 1];  vdata = [-1 1];  % input coordinate system
+
+Corig = [-1 -1;   -1   1;  1 -1; 1 1];
+Cnew = [-1 -1; -0.5 1;  1 -1; 0.5 1];
+% Uses MATLAB's transform generator to create transform stucture
+tform = maketform('projective',Corig,Cnew);
+
+% Use my slant function to create a slant matrix
+M = slant([0 0]', 30);
+
+% [v, M] = rot([1 1 1]', 15, 'y');
+% [v, M] = trans([1 1 1]', [0 0]');
+
+% Replace the matrices in the transform created by MATLAB with my
+% transformation matrices
+tform.tdata.T = M;
+tform.tdata.Tinv = inv(M);
+
+[B,xdata,ydata] = imtransform(im, tform, 'bicubic', ...
+                              'udata', udata,...
+                              'vdata', vdata,...
+                              'size', size(im),...
+                              'fill', 128);
+figure(2), subplot(1,2,1), 
+imagesc(udata,vdata,im), axis on, axis image, colormap(gray)
+
+subplot(1,2,2), 
+imagesc(xdata,ydata,B), axis on, axis image, colormap(gray),
+title('Tilt')
\ No newline at end of file


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