how to saving image of quadtree from axes
2 views (last 30 days)
Show older comments
Dear all,
I have a problem in saving quadtree image from gui axes.
I've written this code to calculate quadtree decomposition
qt = qtdecomp(im,t);
blocks = repmat(uint8(0),size(qt));
for dim = [512 256 128 64 32 16 8 4 2 1];
numblocks = length(find(qt==dim));
if (numblocks > 0)
values = repmat(uint8(1),[dim dim numblocks]);
values(2:dim,2:dim,:) = 0;
blocks = qtsetblk(blocks,qt,dim,values);
end
end
blocks(end,1:end) = 1;
blocks(1:end,end) = 1;
hold on;
axes(handles.quadtree); % axes for displaying quadtree image in gui Matlab
imshow(blocks,[]);
Then, i wanna save the image by calling this function
function save_Callback(hObject, eventdata, handles)
% hObject handle to simpan (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
ImQuadtree = getimage(handles.quadtree);% getting image from quadtree axes
[nm_file,nm_dir] = uiputfile({'*.jpg';'*.bmp';'*.png';'*.tif';'*.*'},'Saving Quadtree Image');
if isequal(nm_file,[])
msgbox('The Image is not Stored!','Warning','warn');
elseif isequal(ImQuadtree,[])
msgbox('There is no image to stored!','Warning','warn');
else
imwrite(ImQuadtree,strcat(nm_dir,nm_file));
msgbox('Quadtree Image Successfully Stored','Save','help');
end
The problem is when the image is successfully saved, the image result is a black image. There is no block on these image. So, how i can save the image block??
0 Comments
Accepted Answer
Chandra Kurniawan
on 29 Feb 2012
Hi, Elsya
please try to add this line
ImQuadtree = 255*ImQuadtree;
after line :
ImQuadtree = getimage(handles.quadtree);% getting image from quadtree axes
in your 'save_Callback'
I hope this works
More Answers (0)
See Also
Categories
Find more on Computer Vision with Simulink in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!