Abstract — Advancement in the technology has paved path for a new educational nomenclature, i.e., ‘Virtual Classroom’. Virtual Classroom is a teaching-learning environment like the traditional classrooms but offers a wide range of learning flexibility in the virtual environments when compared to traditional education systems. The main hitch in the existing systems is the lack of proper interaction between the students and the teacher. Therefore, this research work focuses on detecting the students in the classroom, recognizing the face of the student who has raised hand for a doubt, and displaying the details of the student such as student name and student id of that particular student. An High Definition Pan-Tilt-Zoom Camera is used to monitor the students and capture their images. The Virtual Classroom specific system makes use of the popular Viola-Jones algorithm for real time Face Detection, Hand-raise Gesture Detection and face of the hand raised student is extracted using image segmentation and morphological operation, followed by point feature extraction and finally Face Recognition is done using Eigen Faces. Thus, the virtual learning environments through proper Face Recognition with special attention to students’ needs or queries are an important aspect for a better learned society. Keywords - Face Detection, Face Recognition, Hand-raise Gesture Detection, Virtual Classroom

1. Face Recognition Using an HD PTZ
Camera in a Virtual Classroom
Madhavi Vikram
Prof. Balaji Hariharan

2. Introduction
• Face Recognition, a kind of biometric software
is a hotspot in computer vision technology
• It has many real world applications namely
video surveillance, security checks in banks,
airports and many more
• One of its most popular applications is in
virtual classroom
IJCSIS, Vol. 14, No. 1, January 2016
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3. Cont…
• In a virtual classroom environment, where the
interaction of students and teacher is
necessary, face recognition plays an important
role
IJCSIS, Vol. 14, No. 1, January 2016
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4. Proposed System
Face Detection
Hand-raise
Gesture
Detection
Face
Recognition

5. System Architecture
IJCSIS, Vol. 14, No. 1, January 2016
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6. Your logo here
Start
Capture the images
(Detect Faces of
Student in the class)
Check if
any
Student
raises
Hand for
doubt
Stop Face
detection
and focus to
Hand of the
Student
Compare with
stored database
of Faces
Stop
Compare
with
stored
database
of hands
Flow Chart
Turn ON the Camera
No
Yes
Crop
Hand
Crop Face
Face Recognised
Face Recognised

7. Results
Fig.01 Face Detection
Fig.03 Hand-raise Gesture Fig.04 Zooming to the Face of Hand- Fig.05 Face Recognized
Detection raised Student
IJCSIS, Vol. 14, No. 1, January 2016
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Fig.02 Zooming to Hand Raised Student
to Capture Hand

8. Conclusion
• A face recognition system that gives the details of
the student in a virtual classroom is designed
• Whenever the student raises hand for a doubt, the
PTZ Camera which is used to monitor the student
in the classroom is zoomed to the particular
student to capture the student images and display
the student name and student ID along with the
face of the student
• The experimental results show that a better and
interactive education system has been designed
for the learners in a virtual classroom
IJCSIS, Vol. 14, No. 1, January 2016
https://sites.google.com/site/ijcsis/

9. Future Work
• More students can be considered for the study
• Recognizing multiple students who has raised
hand for a doubt, also include database of
students with varying pose and identify new
faces not included in the database and add it to
the database
IJCSIS, Vol. 14, No. 1, January 2016
https://sites.google.com/site/ijcsis/