connected_components

Syntax:

components=connected_components(image,threshold,number_of_components)

Description:

Finds the number_of_components of connected component in a thresholded image. Can take either a 2D slice or a 3D volume image. image - (matrix, 2D or 3D) threshold - a value that separates noise and objects (float) number_of_components - number of components to search components - (cell array of boolean matrices, the same dimension as image)

Example:

bkg = zeros(200,200); [X,Y] = meshgrid(1:200,1:200); bkg((X-100).^2 + (Y-100).^2 < 10^2) = 1; bkg((X-150).^2 + (Y-150).^2 < 30^2) = 1; bkg((X-50).^2 + (Y-100).^2 < 20^2) = 1; figure; subplot(1,2,1); imagesc(bkg, [0,1]); axis image % Find the largest component component = connected_components(bkg, 0.5, 1); subplot(1,2,2); imagesc(component{1}, [0,1]); axis image

Legend: EPR-IT functions; MATLAB functions; comments.