Post on 16-Jan-2016
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Graphical Annotation Based Interactive
Techniques in eTrace eLearning Environment
Teodor Ştefănuţ
Computer Science Department
Technical University of Cluj-Napoca
teodor.stefanut@cs.utcluj.ro
Dorian Gorgan
Computer Science Department
Technical University of Cluj-Napoca
dorian.gorgan@cs.utcluj.ro
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 2
Outline
Objectives
Graphical annotation techniques
Communication improvements using annotations
eTrace platform
Lessons creation and management
Experiments
Knowledge assessment
Gestures
Results
Conclusions
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 3
Objectives – I-Trace Project
Study the requirements and specifications for graphical pen annotation based eLearning environments
User requirements (i.e. professor, students), eLearning environment functional specifications, usability requirements, lesson structure, user interaction techniques.
Adapt and integrate graphical annotation capabilities in eTrace eLearning framework
Develop eTrace eLearning environment, design and implement the client-server architecture, resource management, security, annotation model, annotation persistence.
Integrate graphical interaction techniques in teaching materialsDevelop lessons in various domains including Computer Science, Medicine, Physics, Mathematics, Algorithms, Computer Graphics.
Usability evaluation for graphics annotation techniquesDesign and produce evaluation instruments for pen and mouse based graphics annotation; Develop test cases for graphics annotation according with usability requirements and specifications.
Usability measurements, analyse data, usability evaluation.
Usability evaluation for graphics annotation techniquesKnowledge assessment using graphical annotation
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 4
Graphics annotation techniques
2D graphical annotation techniques on text, images, and documents
2D graphical annotation techniques for 3D objects
3D graphical annotation techniques on 3D objects
E-learning framework based on 2D and 3D annotation techniques
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 5
eTrace Platform
eTrace – eLearning Environment based on graphics annotation
Developed at the Technical University of Cluj-Napoca (UNI-CLUJ)
Developed through the I-TRACE Project
“Interactive Tracing and Graphical Annotation in Pen-based e-learning”,
223434-CP-I-2005-IT-Minerva-M (2005-2007)
ITrace project: http://users.utcluj.ro/~gorgan/res/cgis/itrace/
eTrace references:
eTrace eLearning Environment: http://dataserver.mediogrid.utcluj.ro/adnotare/
eTrace presentation: http://users.utcluj.ro/~gorgan/res/cgis/itrace/
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 6
eTrace Platform
Experiment the annotation techniques on 2D and 3D scenes Support annotation independence against document type (text, image), format
and 3D scene description Annotation modeling User interaction techniques Annotation description and communication Synchronization between object and annotation Annotation processing and interpretation Persistence among working sessions and users Visualization Security Integration into e-learning lessons Implementation and experimentation of the annotation techniques in e-learning
applications
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 7
eTrace – lessons creation and management
Videos
Documents
3D Objects
Sounds
Other multimediacontent
Pictures
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 8
eTrace – Lessons Integration
Login into the system with teachers access rights
Enter the “Add lesson” section
Complete the information for lesson description: Title, section, description, lesson files in .zip format
Send the information to the server
Access the lesson
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 9
eTrace – Graphical Annotation Based Lessons
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 10
eTrace – Experiments and Exercises
Experiment: multiple elements contour selection
Exercises:
Identify bullets groups Analyze the text above
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 11
eTrace – Experiments and Exercises
Experiment: single element selection
Presentation:
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 12
eTrace – Experiments and Exercises
Experiment: handwriting
Exercises:
Please indicate the following elements: access and emergency exit doors, flaps, fuselage
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 13
eTrace – Knowledge assessment
Visual evaluation Made by the teacher
Based on grades
Can be applied for every annotation
Subjectivity
Time demanding for the teacher
Inefficient and limitative for a high scale e-Learning application
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 14
eTrace – Knowledge assessment
Automatic evaluation Automatically made by
the system
Instant evaluations can be implemented
Subjectivity is eliminated
Recommended for global e-Learning systems
Can be done by comparing annotation made by students with a model annotation
Not suitable for all annotation techniques
Automatically verify that redline is inside the yellow contour and as near as possible to the points P1…Pn
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 15
Experiments - Exercises
Other exercises (17): http://users.utcluj.ro/~gorgan/res/cgis/itrace/
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 16
Measurements
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 17
Conclusions
Free forms of expression
New types of questions and answers in the eLearning applications
Visual free form answer provides support for creativity, flexibility, imagination, and artistic ability
Annotation based interaction techniques must be designed according with the characteristics of each interaction device
The assessment of the annotation quality has a significant impact on the quality of the answer
Automatically evaluation of the annotation based answer
"eLearning and Software for Education", BUCHAREST, April 17-18, 2008 18
Future work
Usability of the 3D annotation techniques
Develop automatically techniques for knowledge assessment in graphics annotation based lessons
Multi user sessions
Real time communication
Develop graphics annotation lessons in various domains
Propose technical specifications for standards concerning with
1. Graphical annotation model
2. User interaction techniques
3. Automatically knowledge evaluation
Questions
Thank you
Teodor Ştefănuţ
Computer Science Department
Technical University of Cluj-Napoca
teodor.stefanut@cs.utcluj.ro
Dorian Gorgan
Computer Science Department
Technical University of Cluj-Napoca
dorian.gorgan@cs.utcluj.ro