How to remove thin lines which are connected to bigger objects

So far i got this binary image:

-

Now i would like to remove the thin lines which are connected to the bigger "round" objects. To get something like this:

How is this possible?

thanks

Answer 1

[Image Analyst]

You could try imopen() - a morphological opening. It may change the boundary of the round blobs slightly though.

[matlab3000]

Thanks for your answer. I'm proccesing the images from an webcam stream with this code so far:

if true
  cam = webcam(1);
while(1)
  img = snapshot(cam);
  img = rgb2gray(img);
  background = imopen(img,strel('disk',20));
  diff_im = imsubtract(img,background);
  diff_im = medfilt2(diff_im, [3 3]);
  diff_im = im2bw(diff_im,0.20);
  bw = bwlabel(diff_im);
end
end

i've tried now with bwmorph(img,'open'); and bwmorph(img,'thin'); but that doesn't work (think i can't do it with imopen() when i get the image directly form the wecam). Or isn't that what you meant?

[Image Analyst]

No. I was talking about the binary image which you showed first, not doing it on a gray level image and subtracting and doing a median filter and then thresholding. Maybe you can upload the original gray level image.