1. A method for identifying marker associated points in an image, the method executed by an imaging system including a scanner, a computer with an electronic processing unit, and a memory module storing a marker point identification module executable by the electronic processing unit, the method comprising: obtaining, at the computer, an image based on image data generated by the scanner; applying, with the electronic processing unit, a high-pass filter to the image to suppress background and, thereby, create a background suppressed image; and extracting, with the electronic processing unit, marker associated points from the background suppressed image.