title: Emgu CV blob detection in gray image
body: <p>I am a newbie in image processing. Could anyone teach me how to do blob detection in gray image? A sample code would be really appreciated. I would then have to count the number of blobs present. By the way the input would be from web camera. And also how to determine the size of the blob? Like to compare if the size is almost the same size as a head? Actually I'm doing a head counter where I have to count the number of people passing through the door.</p>