Retaining the largest blob in an image

'bwlargestblob' reads in a 2-d binary image and outputs a binary image, retaining only the largest b

'bwlargestblob' reads in a 2-d binary image and outputs a binary image, retaining only the largest blob.

Usage: [outim] = bwlargestblob(im,connectivity)

im - 2-d binary image
conenctivity - Accepts 4/8 connectivity
outim - Output binary image (with 1s and 0s)

Example:

im = imread('text.png');
outim = bwlargestblob(im,8);
figure;
subplot(1,2,1); imshow(im);
subplot(1,2,2); imshow(255*outim);