MATLAB: Is there a way to get the centroid of a pixel in an image

centroidcomputer visionimage processingImage Processing Toolbox

I have a set of pixels from an image that I'd like to find out the centroid for, without user input. Is there such a way to do this?

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See my Image Processing Tutorial http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862 It goes through all that. It finds centroid of regions and gray level weighted centroids of regions, and a bunch of other stuff too. It has been very instructive for thousands of people.

Related Solutions

MATLAB: Calculating centroids

Here's the demo:

http://www.mathworks.com/products/demos/image/color_seg_k/ipexhistology.html

After that, if you need spatial centroids (x,y,z locations) in addition to color centroids (the RGB values of the color clusters' centroids), it's a simple matter to find centroids using bwlabel() and regionprops(), like in my BlobsDemo ( http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862 ).

MATLAB: Triangle centroid

Just average all the coordinates. For example, if you have a vector containing x coordinates and a vector containing y coordinates, you can find it in the following manner.

x = rand(3,1); % x-coordinate
y = rand(3,1); % y-coordinate
x_centroid = mean(x);
y_centroid = mean(y);

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Related Solutions

MATLAB: Calculating centroids

MATLAB: Triangle centroid

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