Home // CONTENT 2013, The Fifth International Conference on Creative Content Technologies // View article

Feasibility of a Camera-Based Instant Feedback System

Authors:
Samuel Kosolapov
Evgeny Gershikov
Nissim Sabag

Keywords: image processing; 2D barcode; color recognition; OCR; IFS

Abstract:
The Instant Feedback System (IFS) described in this article is designed to collect students’ responses to a series of multiple-choice questions. An IFS enables the educators to improve their teaching by generating real-time feedback from the students about the clarity of the lesson. A number of IFS are known: systems using wired mini-keyboards, infrared clickers, SMS or Internet-based smartphones applications, etc. Our long-term goal is to create an IFS system based on the use of digital camera. In the frames of camera-based IFS implementation, every student attending the class receives a specially designed card containing a predefined number of color markers and a 2D barcode. When the students are asked a multiple-choice question, they answer by physically raising their cards. The 2D barcode on the card is used to encode the student’s ID, whereas 2D orientation of the card encodes the number of student’s answer. A number of images of the class are grabbed by the IFS camera and processed by a computer, which generates a list of student grades. Reliability of the chosen card design and camera placements is analyzed. We conclude that the chosen card recognition process demonstrates feasibility of the camera-based IFS approach.

Pages: 23 to 29

Copyright: Copyright (c) IARIA, 2013

Publication date: May 27, 2013

Published in: conference

ISSN: 2308-4162

ISBN: 978-1-61208-275-2

Location: Valencia, Spain

Dates: from May 27, 2013 to June 1, 2013