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24th Annual TCC | Online Conference | April 16-18, 2019

Sustainable Learning, Accessible Technologies, & Diverse Contexts

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Apr 17 2019

ViGLe: A Visual Graphical Learning Module on Optical Character Recognition

Session Description
Students of the Arts and Humanities use Optical Character Recognition (OCR) to convert scanned images of pre-1800 AD text. They need to know how digital text is extracted from the scanned image. Thanks to images captured with cell phones, understanding this is useful for everybody. The processing steps employed by a typical OCR software are, in order, Binarization, Deskew, Segmentation, Character Segmentation and Character Recognition. In this research project, a standalone asynchronous visual graphical learning environment (VIGLE) on OCR was developed. Constructivist learning strategy was employed. The learning module was integrated in a website that works on mobile. Latest web technology was used to achieve one stop interface, browser compatibility, responsive window sizing and interactive visual content. Binarization, Deskew and Segmentation modules was implemented in the time available. Each module provided commands to run Ocropy, to apply the learning at each step.

The participants took the course asynchronously on their own time and assessed for themselves their own performance. Each processing step was equipped with links to pre-quest and post-assessment tests. A post survey was used to evaluate the results of the learning module. Results show that the participants found both the graphical representation and the visual interface helpful. They found the incomplete learning module on OCR at best moderately useful in helping them digitize text. It is recommended that a facility be added by which participants can interact with each other. The design and development of the website and detailed results will be provided during the TCC presentation.

Presenter(s)
Umesh Rao
Umesh Rao, University of Hawaii, Placentia, California, USA
Born and raised in India, Umesh Rao received his first Masters in Electrical Engineering from Indian Institute of Technology, New Delhi. He holds dual graduate degrees in Electrical Engineering and Systems Engineering from Case Western Reserve University. He has worked in the semiconductor industry for Intel Corporation and ON Semiconductor. He is pursuing a Masters in Learning Design at the University of Hawaii and sees learning as an indicator that corporations will leverage to evaluate the well being of their employees and the health of their organization, in the future. Learning is the antidote to changing business conditions and the task of the management is to ensure learning thrives among their employees and the greater organization.
Session Type
20-Minute LTEC Student Session
Audience
Intermediate, Advanced

   WATCH  

A recording of this presentation is available.
Click the button to the right to access the session archive.


Written by tcconline2019 · Categorized: 20-Minute LTEC Student Session · Tagged: Constructivist, Graphical, Massively Open, Visual

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TCC Hawaii, LearningTimes, & the Learning Design and Technology (LTEC) Department, College of Education, UH-Manoa, collaborate to produce this event. Volunteer faculty and staff worldwide provide additional support.

TCCHawaii.org, a Hawaii nonprofit corporation, conducts events for educators and graduate students worldwide relating to current and future practices and research in learning technologies and design.

 

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