The appropriate location or detection of vein vessels giveslarge contribution in biometrics like human identification, matching, in thefield of forensic and in medical applications. Other biometrics features havingseveral disadvantages which will not bother if we go for vein detection whichhaving its unique features. The appropriate location of veins plays veryimportant role in medical application for needle infusion for the purpose ofdrug or medications delivery in patients. The biometric gives a normalized,efficient and discriminating representation of feature. There are various typesof biometric recognition. Fingerprint recognitionPattern of finger print areunique to each person.
Even twins also have different finger print patterns.This technique has some disadvantage also. Disadvantages of this system are ageof user, dryness and wetness of finger, temporary or permanent cuts on figurecan affect the performance of system because all this above things effect onpattern hence give a poor pattern for recognition. User may go through the difficultiesin authentication process. FacerecognitionThere are various types of facialscan those are by capturing an image of face by using cameras or by usinginfrared patterns of facial heat emission.
Facial recognition generally usedfor identification instead of verification. It includes eyes, nose, lips, andso on. The advantage of this technique is that it does not require touch of anydevice. The disadvantage of this technique is that the quality of capture imagedepends on lightening, background, and angle of camera. And anotherdisadvantage is appearance of person changes time by time.
Iris RecognitionThe iris is a color portion ofeye which surrounds the pupil and this portion of eye is used for recognition.The iris pattern can be obtained through the video based images. Thistechnology can be used for identification and verification both. Advantage ofthis recognition system is iris pattern does not change throughout the life andit has smallest acceptance rate. But the position head and eye is veryimportant to get accurate results. And people should not move their head duringdata acquisition.
It requires a very high resolution of captured images becauseiris is very small portion of eye. Voice RecognitionThis recognition uses different features of acoustics whichare different in individuals. There are various vocal qualities like frequency,short time spectrum of dialogue and spectrograms and these are used for voicerecognition. In these type of system user selects the expression and repeat itduring identification and verification. This reduces the risk of guessing thesame phrase and entering into system.
But noise and echoes can reduce the quality and accuracy of system.Another disadvantage of this system is voice changes illness or in differentmoods and it can cause authentication problem. Insertion ofintravenous catheters plays an important role in any surgery. Physicians facethe major problem for accessing vein for IV drug delivery or taking bloodsample for test. It is important for children’s, adults, and critical patients.Because of poor visibilities it may possible that unnecessary puncturing ofvein can be happen. And this may results in bruise and permanently damage ofveins. This system give an approach for IR vein detection system and it helpsin identifying veins on the back side of hand.
IR LED ring is used for infraredradiation. Smartphone camera is used to capture the image and its preprocessingcan be done by using MATLAB. Noise removal filter and adaptive histogramequalization technique is used to enhance the image. This system onlyimplements the acquisition and segmentation of image 3. Vein detection considered as one of latest biomedicaltechniques.
Different difficulties found in design and implementation of deviceregarding to image processing algorithms and lighting system at low price. Specialistsconfront the issue while distinguishing veins for intra-venous medicationconveyance. A few issues can be happens those are wounds, rashes, blood clump.Therefor framework needs to create which will distinguish non-obtrusivesubcutaneous veins. So modified webcam is utilized for catching vein picturesand PC vision is utilized for processing. This framework can be utilized fortreatment of varicose veins, profound vein thrombosis and vascular sicknesses. Thissystem can be used for treatment of varicose veins, deep vein thrombosis andvascular ailments. This system has only worked on acquisition and segmentationand it does not belong to IR imaging which is stationary it encounters a lot ofartifacts 6.
Utilizing infrared radiation forbiometric applications is new and energizing idea that convey top of the lineapplications in various fields including security and medication. While acouple of devices have just been actualized, there is a solid requirement oflow cost sensing device. This exploration has been centered around a simple toutilize, cost effective vein design recognition framework that utilizationsnear infrared radiation yet thecalculations and the equipment lighting and detecting head can effectively beutilized as a part of different applications in the field of legal sciences,human acknowledgment or in medicinal applications 3-9 Forintravenous medication and withdrawal of blood the intravenous access andsurgical perforation are invasive procedure in medical field every day. Thenumbers of process which corresponds to vein detection are blood draws,peripheral catheter insertion, intravenous therapies, etc. For intravenous drugdelivery and other medical situation doctor suffers from difficulty. Therefordevice which can clearly show vein is needed to develop. The system relate todevelopment of non-invasive subcutaneous vein detection. This system uses a CCDcamera for capturing image and compute software module.
This system works onvideo but under the particular ideal light conditions and therefor it needsexternal adjustment or automatic software calibration. USB cable restricttransfer frame rate. This system is able to visualise and detect veins fromanterior side of forearm 2.
IR radiations for biometrics provide apromising result in the field of security and biometrics applications. The useof vein pattern for person identification is new approach and it uses a veinnetwork present under the skin. The vein pattern is unique feature in eachindividual. The features of veins that is uniqueness and stability can be inbiometrics for identification of person. The method is to detect the veinsusing an IR illumination then different techniques is used for enhancement ofvein image for identification of person. This work consists of IR veindetection and matching of systems for identification of persons.
The novelscheme approach is used which capture image by an infrared illumination. Thissystem is used to detect veins on palm dorsal surface and it is limited to NIRimages and implementation in MATLAB 1.