centroid of an image

I want to find the centroid of an image.How to proceed?

[Dipti S]

Something like

stats1=regionprops(BW,'MajorAxisLength','MinorAxisLength','Centroid','Orientation','Area','EquivDiameter')

centers = stats1.Centroid;

Answer 1

[Chandra Kurniawan]

Hi,

did you mean 'find centroid of objects in an image'??

use regionprops with property : centroid

Eg : stat = regionprops(Ilabel,'centroid');

I = imread('coins.png');
Ibw = im2bw(I);
Ibw = imfill(Ibw,'holes');

Ilabel = bwlabel(Ibw);
stat = regionprops(Ilabel,'centroid');
imshow(I); hold on;
for x = 1: numel(stat)
    plot(stat(x).Centroid(1),stat(x).Centroid(2),'ro');
end

[J Shaw]

Hi,

If I use this code, I get a centroid array that has 255 elements. What is the meaning for each element? Thanks!

Answer 2

[Sean Lawson]

Broad question, if the image is your input, simply find the center of the image. But I assume you are asking a more complicated question: like find the centroid of a specific object in an image? if so, need to segment the object out of the image, then find the center point.

[Dhrubajyoti Das]

I want to find the centroid of a face but the face is not in the center of the image... How to find the centroid. Can you please give an answer

[Image Analyst]

Start your own new discussion. And be sure to attach your image.

[Dhrubajyoti Das]

http://www.mathworks.com/matlabcentral/answers/104175-find-centroid-of-an-image this is the link. can you please help

[Biswas Lohani V K]

HEllo everyone, What is the syntax for this bb = stats(object).BoundingBox; bc = stats(object).Centroid;

could you please define how this code works

Thank you