Vein speed of operation is also very high.

Vein pattern recognition has been emerging technique in the field of
biometric. Vein pattern recognition technique has it’s positives against other technologies. It can
successfully use in various other applications like field of forensic, human
recognition & medical applications such as bruises & burns, intravenous
injection, among children, blood transfusions, geriatrics, enter medications or
fluids in body. The
upcoming biometric techniques include vein detection pattern, DNA and body odor
recognition. Vein recognition also known as vascular biometrics and sub dermal
nature of vein, vascular biometric are consider to be highly secure modality,
whereas other types of biometrics had proven vulnerable to prevention of
attacks, but vein patterns are virtually unspoofable.

 

The technique of vein detection is based on identification of the
subcutaneous vein patterns in individuals. For doctors or nurses, the process
of finding the location of vein vessels is very important to help the patients.
Generally it is easier to find veins in young generation persons, but in
elderly persons it if difficult to find the veins only in visible light. The advantage
of identifying vein is that it does not require the direct contact with the device
and speed of operation is also very high. Vein detection is very important for person
identification, matching, recognition, in medical applications it is mandatory,
and it plays very important role in medical field. The appropriate
location or identification of vein vessels is mandatory for needle infusion in
the patients.

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Sometimes it is very complicated to insert needle
in the first experiment because many of doctors or nurses find difficult to
locate vein vessels. For patients who suffer from heart disease it is important
to detect veins to provide them intravenous drugs immediately so that it will
help to dissolve clot. Number of trials for needle infusion cause wasting of
time and also it is uncomfortable for patients. For humans it is extremely
important to determine the accurate location of the various vein vessels
because if injecting a needle went wrong then person may suffer badly. While
injecting needle if any errors occurs then it may affects badly on patients
health. Therefor it is need to develop system which will give accuracy in
detecting the veins which contributes for curing patients.

 

Vein pattern recognition gives competition to most of the traditional
methods. It has several advantages corresponds to unique, portable, and
inherent properties compared to other biometrics features, like fingerprint,
retina, voice and face. Fingerprint scanner requires contact with the scanner
and it may possible that pattern can be weak because of other problems like
person age, dryness, disease etc. Retinal scanner is not popular because of its
intrusive nature also it is difficult for installation. Facial recognition has
a disadvantage that it cannot capture without persons knowledge, consent.
Disadvantage of voice recognition is voice changes with different moods,
illness and weakness so, it may cause problem while authentication. To ignore
all above problems we can go with the vein recognition because of its unique
properties those are – high anti counterfeit performance, high recognition
performance, easy acceptability.

 

In medical field to deal with the problems of
needle infusion, a single tool for identifying the veins are required which
will clearly shows the veins. In proposed system for vein detection   infrared lights is used because vein patterns
are not easily observable in visible light. Infrared lights will emit to the
body of patients. The reason why near infrared light is used is because the
light is absorb more strongly by human blood than the surrounding tissues. The
advantageous features of near infrared imaging are it can easily penetrate up
to 3mm into the tissue. When the light emits on the body, camera is set on the
part of the body where we want to detect the veins of that patient. These
results to veins will look darker than the other tissues. The aim is to detect
the veins only not arteries and infrared light absorption in blood vessels
depends on the oxidized level, that is deoxygenated blood absorb more light
than oxygenated blood.