IRJET- Computerized Attendance System using Face Recognition

International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 06 Issue: 03 | Mar 2019 www.irjet.net p-ISSN: 2395-0072
© 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 3844
Computerized Attendance System Using Face Recognition
Prof. S.D.Jadhav1, Rajratna Nikam2, Suraj Salunke3 , Prathamesh Shevgan4 , Saurabh Utekar5
1Professor, Dept. of EXTC Engineering, Bharati Vidyapeeth College Of Engineering, Maharashtra, India
2 3 4 5Student, Dept. of EXTC Engineering, Bharati Vidyapeeth College Of Engineering, Maharashtra, India
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Abstract - In this paper we have proposed an attendance
system using face recognition for educational
institutions/schools and organizations by making use of
Open Computer Vision(OpenCV) with help of certain Face
Recognition and Face detection algorithms. In the era of
automation, by replacing the traditional/manual way of
attendance marking system the automated attendance
system will take the helm. In this project, face databases will
be created to help the recognizer algorithm. Then, during
the tracking session, faces will be compared against the
database to seek for identity. When an individual is
identified, its attendance will be marked automatically
saving necessary informationintotheexcel file.Ascompared
to the senile attendance marking system whichismuch ofan
arduous task, by means of technology this project will
provide huge convenience to the authority as many
processes are automated here.
KeyWords: Principle Component Analysis (PCA), Haar-
Features, Viola-Jones Algorithm, Eigen Faces.
1. INTRODUCTION
Class attendance is very important aspect for students
studying in any educational institutions. So it is very
important to mark the attendance accuratelyandeffectively.
In the modern era of technology still in many organizations
attendance is marked manually by the faculties which is a
quite tedious task, this senile way of attendance marking by
calling name or roll no. of students is not only time
consuming but also results in inaccuracy, forging and also
lots of resources are wasted. An automated face recognition
attendance system will be quite useful to eradicate all the
problems faced by thetraditional wayofattendancemarking
system. There are other ways like RFID card and fingerprint
scanner for attendance marking which is used by many
institutions although they are automated and way ahead of
traditional method but fails to meet the time constraint. This
project introduces an involuntary attendance system which
does not require any physical interference. Facial
Recognition System is an list intrusive and fastest biometric
technology that can uniquely identify a person based on the
persons facial textures and shape. The recognition process
uses biometrics for mapping of facial features from a video
or photograph. The captured information is compared with
a database of known faces to find a best match and the
resulting result is stored in a spreadsheet with desired
individual information.
2. ALGORITHMS
A. VIOLA JONES FACE DETECTION ALGORITHM
It was the first algorithm used by the computer vision to
detect the objects in real time. However it was mostly used
for the detection of faces. To detect the faces the algorithm
uses four stages.
 Haar feature selection
All human faces have some similar properties such as the
nose region is bright as compared to eyes and also the eye
region is darker as compared to cheeks.
Fig -1: Haar features similar to human face
The value of the rectangular Haar features can be given by,
Value= (sum of pixels in black area)-(sum of pixels in
white area)
 Integral image
An integral image of a given subwindow is created to reduce
the complexities while comparing them with the haar
features to detect whether the given subwindow contains a
face or not.

Fig -1: conversion of input image into an integral image
The integral image of a given sub-window is calculated at
each pixel by adding the values of the pixels at right and
above that pixel.
 Adaboost training
There can be approximately160000+featurevalueswithina
detector of 24X24 image window. Adaboost is a machine
learning algorithm which helps in finding only the best
features among these detected features.
In this step the trainer converts the weak classifiers into a
strong classifier by the linear combination of weak
classifiers.
Where, F(x ) = strong classifier
f1(x), f2(x),…=weak classifiers
This training helps us to detect faces with ease.
 Cascade classifier
In order to reduce the processing time todetectthefacesina
given video frame we make use of cascade classifier. In this
we add some important Haars face features in each of the
classifier. When the image sub windows pass through each
classifier only the sub windows containing faces would be
passed to the next classifier to detect faces in the sub
window. Hence increasing the efficiencyofdetectionoffaces
and reducing the false face detection rate.
Here several classifiers are cascaded as our system will also
work on a low power CPU. The classifiers help us in eradication
of unwanted parts of images. Cascading classifiers are pre
trained for the detection of particular object. For successful
detection of desired object entire frame is scanned and object
is detected. If we take a look at any input image the most part
of it is inefficacious which is nothing but the non-face region.
After completion of adaboost part we have n number of
features so applying this features on the ineffectual part of
image will be time consuming. So a better idea will be to check
if a window contains the face region or not. Here the grouping
of features is done in all different stages of classifer whichhelps
us in eradication of the reduntant parts of image.
B. PRINCIPAL COMPONENT ANALYSIS ALGORITHM
Multivariate Analysis is used for data involving a large
number of correlated variables. Principal Component
Analysis is a dimension-reduction technique used to reduce
a large number of variables to a small number of variables
that still contains most of the information in the large set.
Principal component analysis is a mathematical procedure
that converts a number of correlated variables into number
of uncorrelated variables which are called principal
components. Thefirstprincipal componentcontains asmuch
of the variability in the data as possible, and eachsucceeding
component accounts for as muchoftheremainingvariability
as possible.
 Eigenfaces
Eigenfaces a set of eigenvectors when they are used in the
computer vision problem of human face recognition. Asetof
eigenfaces are created by doing a mathematical process
called principal component analysis on a large number of
images depicting different human faces. Informally,
eigenfaces can be considered a set of "unique face
ingredients", derived from statistical analysis of many
images of faces. Any human face can be considered to be a
combination of these standardized faces. For example,one's
face might be composed of the average face plus 15% from
eigenface 1, 65% from eigenface 2, and even -2% from
eigenface 3.
3. METHODOLOGY
Below is the block diagram of the system for efficient
understanding of our project. The introduced system
comprises of web cam which isusedwhilecapturing images.
For purpose of registration we have to manually enter the
roll number or unique id for that person withperson’s name
this step should be done under the guidance of any faculty
member to avoid any ambiguity. From the camera the input
images are captured and faces in them are detected. We
make use of viola jones algorithm fordetectionoffaces.After

successful detection faces are trained. For training of
detected images we make use of principle component
analysis same as eigen face recognitionalgorithm. Forbetter
results and accuracy we have to capture many images of
same person with different expressions which results in
training efficiency. Further all different images undergoes
same procedure as mentioned above and are stored in a
database. After successful completion of above steps an xml
file is generated which includes set of HAAR features
extracted during thetraining process. Asthetrainingprocess
is completed the system is ready for recognition and
marking of attendance. Now, as soon as an face is detected
the system compares it with the trained faces stored in the
database and if matching results are obtained, attendance is
marked in the spreadsheet for that specific recognized
person with current date and time.
Chart -1: Flow chart
(Attendance updation procedure)
3.1 GUI
Fig -1: Graphical User Interface
3.2 IMAGE ACQUISITION
Fig -2: Image Acquisition
Capturing image as an input through camera as seen in the
above figure complete face is detected.

3.3 DATABASE
Fig -3: Database
In above figure set of trained images from the database are
shown. After detecting a face, it is stored in database.
Database is created for extracting features for face
recognition.
3.4 FACE RECOGNITION
Fig -4: Image Recognition
In above figure the image is detected and recognized as the
ID and Name of person is displayed. It is done by comparing
features of faces from database and current detected face.
Principal Component Analysis algorithm compares features
by determining distance between features of faces.
3.4 UPDATION OF ATTENDANCE
Fig -5: Student Attendance table design view.
The above figure is showing the records of the students
whose attendance is marked successfully. Attendance is
updated automatically in Microsoft excel sheet with his/her
ID number, name, date and time.
4. CONCLUSION
Our proposed system will surely prove out to be a boon in
the modern era of technology and would be preferred over
the superannuated scheme of attendance marking. Many
extra resources and time is saved by making use of this
system. After successful implementation of this system it is
almost impossible to sabotage the system. The system will
not only resolve troubles that exists in the traditional model
but will also provide better accuracy with rapid results.
REFERENCES
[1] R. C. Gonzalez, R. E. Woods, Digital Image Processing,
Prentice Hall, 2008.
[2] A. A. Abin, et al., "Real-time multiple face detection and
tracking," in Computer Conference, 2009. CSICC 2009.
14th International CSI, 2009, pp. 379-384
[3] Tahia Fahrin Karim, Molla Shahadat, Hossain Lipu, Md.
Lushanur Rahman, Faria Sultana, Face Recognition
Using PCA Based Method, 2010.
[4] Abhishek Bansal, Kapil Mehta, Sahil Arora, "Face
Recognition using PCA & LDA algorithm", Second
International Conference on Advanced Computing and
Communication Technologies, 2012.
[5] Y.Q. Wang, "An Analysis of the Viola-Jones Face
Detection Algorithm", Image Processing On Line IPOL,
2014.
[6] N. T. Deshpande, S. Ravishankar, "Face Detection and
Recognition using Viola-Jones algorithm and Fusion of

PCA and ANN", Advances in Computational Sciencesand
Technology, vol. 10, no. 5, pp. 1173-1189, 2017.

IRJET- Computerized Attendance System using Face Recognition

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