From f618466c25d43f3bae9e40920273bf77de1e1149 Mon Sep 17 00:00:00 2001
From: leochanj105 <leochanj@live.unc.edu>
Date: Mon, 19 Oct 2020 23:09:30 -0400
Subject: initial sd-vbs

initial sd-vbs

add sd-vbs

sd-vbs
---
 SD-VBS/benchmarks/mser/src/matlab/mser_demo3.m | 117 +++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100755 SD-VBS/benchmarks/mser/src/matlab/mser_demo3.m

(limited to 'SD-VBS/benchmarks/mser/src/matlab/mser_demo3.m')

diff --git a/SD-VBS/benchmarks/mser/src/matlab/mser_demo3.m b/SD-VBS/benchmarks/mser/src/matlab/mser_demo3.m
new file mode 100755
index 0000000..4669437
--- /dev/null
+++ b/SD-VBS/benchmarks/mser/src/matlab/mser_demo3.m
@@ -0,0 +1,117 @@
+% MSER_DEMO3  Demonstrates MSER on a volumetric image
+
+% AUTORIGHTS
+% Copyright (C) 2006 Regents of the University of California
+% All rights reserved
+% 
+% Written by Andrea Vedaldi (UCLA VisionLab).
+% 
+% Redistribution and use in source and binary forms, with or without
+% modification, are permitted provided that the following conditions are met
+% 
+%     * Redistributions of source code must retain the above copyright
+%       notice, this list of conditions and the following disclaimer.
+%     * Redistributions in binary form must reproduce the above copyright
+%       notice, this list of conditions and the following disclaimer in the
+%       documentation and/or other materials provided with the distribution.
+%     * Neither the name of the University of California, Berkeley nor the
+%       names of its contributors may be used to endorse or promote products
+%       derived from this software without specific prior written permission.
+% 
+% THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+% EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+% WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+% DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
+% DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+% (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+% LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+% ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+% (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+% SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+% --------------------------------------------------------------------
+%                                                          Create data
+% --------------------------------------------------------------------
+
+% volumetric coordinate (x,y,z)
+x       = linspace(-1,1,50) ;
+[x,y,z] = meshgrid(x,x,x) ;
+
+% create funny volumetric image
+I   = sin(4*x).*cos(4*y).*sin(z) ;
+I   = I-min(I(:)) ;
+I   = I/max(I(:)) ;
+
+% quantize the image in 10 levels
+lev = 10 ;
+I   = lev*I ;
+Ir  = round(I) ;
+
+% --------------------------------------------------------------------
+%                                                      Compute regions
+% --------------------------------------------------------------------
+[idx,ell,p] = mser(uint8(Ir),1);
+
+% --------------------------------------------------------------------
+%                                                                Plots
+% --------------------------------------------------------------------
+
+% The image is quantized; store in LEV its range.
+lev = unique(Ir(idx)) ;
+
+figure(100); clf;
+K=min(length(lev),4) ;
+
+r=.99 ;
+
+% one level per time
+for k=1:K
+  tightsubplot(K,k) ;
+  [i,j,m] = ind2sub(size(I), idx(Ir(idx)==lev(k)) ) ;
+  
+  % compute level set of level LEV(k)
+  Is = double(Ir<=lev(k)) ;
+    
+  p1 = patch(isosurface(Is,r), ...
+             'FaceColor','blue','EdgeColor','none') ;
+  p2 = patch(isocaps(Is,r),...
+             'FaceColor','interp','EdgeColor','none') ;  
+  isonormals(I,p1)
+  hold on ;
+  
+  view(3); axis vis3d tight
+  camlight; lighting phong ;
+  
+  % find regions that have this level
+  sel = find( Ir(idx) == lev(k) ) ;
+  
+  % plot fitted ellipsoid
+  for r=sel'
+    E = ell(:,r) ;
+    c = E(1:3) ;
+    A = zeros(3) ;
+    A(1,1) = E(4) ;
+    A(1,2) = E(5) ;
+    A(2,2) = E(6) ;
+    A(1,3) = E(7) ;
+    A(2,3) = E(8) ;
+    A(3,3) = E(9) ;
+    
+    A = A + A' - diag(diag(A)) ;
+
+    % correct var. order
+    perm = [0 1 0 ; 1 0 0 ; 0 0 1] ;
+    A = perm*A*perm ;
+    
+    [V,D] = eig(A) ;
+    A = 2.5*V*sqrt(D) ;
+    
+    [x,y,z]=sphere ;
+    [P,Q]=size(x) ;    
+    X=A*[x(:)';y(:)';z(:)'] ;
+    x=reshape(X(1,:),P,Q)+c(2) ;
+    y=reshape(X(2,:),P,Q)+c(1) ;
+    z=reshape(X(3,:),P,Q)+c(3) ;
+    surf(x,y,z,'FaceAlpha',.5) ;        
+  end
+end
-- 
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