DCIT Conferences

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Browsing DCIT Conferences by Author "Bernard, Margaret"

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    Fingerprint ridge orientation estimation using a modified Canny Edge Detection Mask
    (2012-10-03) Phillips, Laurice; Bernard, Margaret
    Fingerprint recognition is arguably the most popular biometric used in authentication of individuals today. One critical step in the process of automatic fingerprint recognition is the segmentation of a digital fingerprint image into smaller regions where local image features can be more easily enhanced, analyzed or extracted. In this process it is essential to accurately estimate the fingerprint ridge orientation within the local region so that the fingerprint’s core singular points can be identified. This research paper proposes a novel approach to estimating the local ridge orientation by using an image convolution operation based on a Canny Edge detection mask. Experimental results illustrate the effectiveness of the algorithm in establishing the dominant edge direction of the ridge.
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    Learning computer programming through game playing
    (2012-10-03) Bachu, Eshwar; Bernard, Margaret
    In this paper we present an approach for teaching and learning Computer Programming through game playing. This activity is intended to complement traditional teaching of concepts. The focus is on building program comprehension rather than program generation. In playing the game, students improve their ability to read and understand a program written in a specific language and to follow the logic in a program. They build speed in comprehension, as is required in learning any language. To win the game, students have to play certain steps repeatedly, using different strategies, and with time constraints. This repetitiveness reinforces learning. Once they master the basic elements of a program, they will experience less frustration in coding solutions for more challenging problems. The preliminary results with students using this gaming activity are encouraging.
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    An Online Multiplayer Game for Collaborative Problem
    (2012-09-25) Bachu, Eshwar; Bernard, Margaret
    Teaching computer programming to novices has always posed a major challenge to educators, most novices acquire basic programming skills but they are unable to utilize them in a meaningful way to solve many of the non-routine problems which are presented to them. As a result, they do not achieve any level of programming fluency. Collaboration has been identified as a useful tool to help overcome this problem if utilized at the right times during the programming/problem solving process. This paper presents a review of computer supported collaborative learning (CSCL) concepts, collaboration in programming and the problem solving domain. Finally, a design for a gaming application of CSCL (COPS) to help improve the problem solving ability of novice programmers is presented.