Introducing a border/outline to objects in an image.

51 次查看（过去 30 天）
Sid
Sid 2012-1-27
Hi everyone,
I have a question about how to introduce an outline to a mask. Please check the original source image at: http://i39.tinypic.com/ap78s9.jpg. I would like the borders of the various objects in the mask to be outlined and each object identified as shown in: http://i39.tinypic.com/e839yt.jpg, both with an outline and an index number (so that the index number could be used to identify, and cross-refer the results generated by regionprops). This specific example was generated using ImageJ.
Any help would be much appreciated.
Thanks and have a good weekend.

请先登录，再回答此问题。

采纳的回答

Chandra Kurniawan
Chandra Kurniawan 2012-1-27
Irgb = imread('ap78s9.jpg');
Igray = rgb2gray(Irgb);
Ibw = im2bw(Igray,graythresh(Igray));
Ifill = imfill(Ibw,'holes');
B = bwboundaries(Ifill);
stat = regionprops(Ifill,'Centroid');
imshow(~Ibw); hold on
for k = 1 : length(B)
b = B{k};
c = stat(k).Centroid;
plot(b(:,2),b(:,1),'g','linewidth',2);
text(c(1),c(2),num2str(k),'backgroundcolor','g');
end

更多回答（1 个）

Sean de Wolski
Sean de Wolski 2012-1-27
I would guess one of these will be your friend:
doc bwperim
doc bwboundaries
doc bwtraceboundary

类别

在 Help Center 和 File Exchange 中查找有关 Object Analysis 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by