T.R. Savarimuthu and A.S. Sorensen (Denmark)
Blood Vessels, Vein, Infrared Imaging, Skin Optics, Skin
Tissue, Matched Filtering.
This paper presents the use of 2D matched filtering
methods to detect veins in the human forearms, based on
images from near infrared CCD cameras. The method is
able to highlight veins to a degree that enables automatic
detection of the major veins in the forearms of the test
The images used in this work are obtained under
realistic clinical conditions, and are therefore rather noisy,
with a low contrast between the blood vessels and the
surrounding tissue. Even so, the developed matched
filtering methods, is able to reduce noise and increase
contrast enough so that traditional image filters - e.g. blob
detection - can distinguish the major veins.