How can I remove the small blobs in ‘Blobs.jpg’? is it using filtering right? i got confused with the step to remove the blob on that image.

Answer 1

[DGM]

Something like this:

% read an image
inpict = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/148990/image.jpeg');

% binarize the image somehow
mask = imbinarize(inpict); % pick a method
imshow(mask)

% remove blobs that are smaller than a particular area
mask = bwareaopen(mask,100); % pick a size
imshow(mask)