To assign different color in boundary.
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Jhilam Mukherjee
le 22 Déc 2013
Commenté : Image Analyst
le 9 Nov 2021
I want to outline the boundary of the segment image using bwperim() and get the resultant image i.e boundary.jpg, but my aim is to get an output image which outline the region of segment.jpg with different colors link red or green. How it is possible
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/153983/image.jpeg)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/153984/image.jpeg)
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Image Analyst
le 22 Déc 2013
You can use bwboundaries() and plot() to do that:
hold on;
boundaries = bwboundaries(binaryImage);
numberOfBoundaries = size(boundaries, 1);
for k = 1 : numberOfBoundaries
thisBoundary = boundaries{k};
plot(thisBoundary(:,2), thisBoundary(:,1), 'g', 'LineWidth', 2);
end
hold off;
3 commentaires
Alex Perrakis
le 9 Nov 2021
pic01=imread("1.tiff");
pic1=im2gray(pic01);
i=1;
boundaries=[];
for i=3:7:69;
pic050=im2gray( imread(i+".tiff") );
%pic50=im2gray(pic050);
newpicture=imsubtract(pic01,pic050);
%imshow(newpicture)
level = graythresh(newpicture);
level = 0.1405;
newbinpic = imbinarize(newpicture,level);
%imshowpair(newpicture,newbinpic,'montage')
newbinpic2=bwpropfilt(newbinpic,'perimeter',1);
% imshowpair(newbinpic2,newpicture,'montage');
boundariesi = bwboundaries(newbinpic2);
boundaries=[boundaries; boundariesi];
binaryImage = 0.6< newbinpic2 & newbinpic2<1;
end
figure; imshow(pic01);
hold on
for k=1:length(boundaries)
thisBoundary = boundaries{k};
x = thisBoundary(:,2);
y = thisBoundary(:,1);
plot(x,y,'r-','Linewidth',2);
end
grid off
This is my code until now
Image Analyst
le 9 Nov 2021
Yeah, you could call getdata() or getsnapshot() to get a frame and then analyze it to get the boundaries. Not sure how "real time" it would be -- how many frames per second -- but you could certainly try it.
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