% These are commands you can use in order to test the different region
% based segmentation algorithms.  Paste them in the Matlab command window
% and things should work.

% Test the merging algorithm

% Clear everything

clear all
close all

% Go to your image catalog and read your image (exchange with your own
% catalog)

cd 'C:\Documents and Settings\aurdal\My Courses\UIO\INF3300'
i=double(imread('apple1.tif'));
%i=double(rgb2gray(imread('mm3.tif')));

% Take a look at the image

figure
imshow(i,[min(min(i)) max(max(i))])

% Make initial suggestion for segmented image

tmp_seg=reshape(1:prod(size(i)),size(i));

% Test elementary region growing on this image.  Try changing the value
% for the criterion and the connectivity.  And obviously, try different
% images.

[seg,seg_arr,reg]=region_grow1(i,tmp_seg,25,8);

% Take a look at the result

map=rand(max(max(seg)),3);
figure
imshow(seg,[])
colormap(map)





% Test the splitting algorithm

% Clear everything

clear all
close all

% Go to your image catalog and read your image (exchange with your own
% catalog)

cd 'C:\Documents and Settings\aurdal\My Courses\UIO\INF3300'
i=double(imread('apple1.tif'));

% Take a look at the image

figure
imshow(i,[min(min(i)) max(max(i))])

% Test elementary region splitting on this image.  Try changing the value
% for the criterion.  And obviously, try different
% images.

[seg,dummy,c_lab]=region_split1(i,10,1,[]);

% Take a look at the result

map=rand(max(max(seg)),3);
figure
imshow(seg,[])
colormap(map)





% Test the split and merge algorithm

% Clear everything

clear all
close all

% Go to your image catalog and read your image (exchange with your own
% catalog)

cd 'C:\Documents and Settings\aurdal\My Courses\UIO\INF3300'
i=double(imread('apple1.tif'));

% Take a look at the image

figure
imshow(i,[min(min(i)) max(max(i))])

% Run elementary region splitting on this image

[seg,seg_val,c_lab]=region_split1(i,10,1,[]);

% Take a look at the result

map=rand(max(max(seg)),3);
figure
imshow(seg,[])
colormap(map)

% Run elementary region growing on the image seg_val with the split
% segmentation as initial segmentation

[seg2,seg_arr,reg]=region_grow1(i,seg,5,8);

% Take a look at the result

map=rand(max(max(seg2)),3);
figure
imshow(seg2,[])
colormap(map)





% Test if the order of region merging is unimportant using the merging algorithm

% Clear everything

clear all
close all

% Go to your image catalog and read your image (exchange with your own
% catalog)

cd 'C:\Documents and Settings\aurdal\My Courses\UIO\INF3300'
i=double(imread('apple1.tif'));
%i=double(rgb2gray(imread('mm3.tif')));

% Take a look at the image

figure
imshow(i,[min(min(i)) max(max(i))])

% Make an initial suggestion for the segmented image

tmp_seg=reshape(1:prod(size(i)),size(i));

% Test elementary region growing on this image and on its trnspose.  Try changing the value
% for the criterion and the connectivity.  And obviously, try different
% images.

[seg1,seg_arr,reg]=region_grow1(i,tmp_seg,25,8);
[seg2,seg_arr,reg]=region_grow1(flipud(i),tmp_seg,25,8);

% Take a look at the result

map=rand(max(max(seg1)),3);
figure
imshow(seg1,[])
colormap(map)

map=rand(max(max(seg2')),3);
figure
imshow(flipud(seg2),[])
colormap(map)