I want save each each white nodules as an image from the below binary image?

[KALYAN ACHARJYA]

Question is not clear?

[Ibrahim Ullah]

i am a doing a project on lung nodule detection, i want to take GLCM features of all those white objects separately whose area is less than 250

Answer 1

[Image Analyst]

You can use regionprops() to get the bounding box of each blob, then crop it and use imwrite() to write it out as its own image. Something like this untested code:

props = regionprops(binaryImage, 'BoundingBox');
for k = 1 : length(props)
    croppedImage = imcrop(binaryImage, props(k).BoundingBox);
    fileName = sprintf('Blob %2.2d', k);
    imwrite(croppedImage, filename);
end

This just does what your subject line asked - how to save each blob as an image. It does not compute the GLCM of each blob. If you want, you can call glcm() on each cropped image and save the results in a .mat file using save().