i have plotted a contour on image and got a segmented image. .I use the following code to plot contour
imagesc(Img,[0 255]);colormap(gray)
hold on;contour(im,[0 0],'b');
I want to add this contour on the image so that i can apply any algorithm for segmentation
only save figure you have plotted.
you can save this figure, in any format(.jpg,.png, .bmp,....).
You can aproximated the values of your curve obtained with contour, to the image values. One example of this you can found next:
[X,Y,Z] = peaks;
figure,
imshow(Z,[])
hold on
[C,h]=contour(Z,[0 0],'b');
[row, col, val] = find(C==0);
% length(row) show the number of curves found in the contour in this case
% show 3 curves
C1=[round(C(1,1+1:col(2)-1));round(C(2,1+1:col(2)-1))]'; % aproximate the data tu pixels values
C2=[round(C(1,col(2)+1:col(3)-1));round(C(2,col(2)+1:col(3)-1))]';% aproximate the data tu pixels values
C3=[round(C(1,col(3)+1:end-1));round(C(2,col(3)+1:end-1))]';% aproximate the data tu pixels values
plot(C1(:,1),C1(:,2),'r');
plot(C2(:,1),C2(:,2),'g');
plot(C3(:,1),C3(:,2),'c');
hold off
The next step is replace the image values in this C1,2 or 3 curves.
Regards
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