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Graphical Annotation Based Interactive Techniques in eTrace eLearning Environment

Graphical Annotation Based Interactive Techniques in eTrace eLearning Environment. Teodor Ş tef ă nu ţ Computer Science Department Technical University of Cluj-Napoca teodor.stefanut@cs.utcluj.ro. Dorian Gorgan Computer Science Department Technical University of Cluj-Napoca

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Graphical Annotation Based Interactive Techniques in eTrace eLearning Environment

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  1. 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

  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 materials Develop lessons in various domains including Computer Science, Medicine, Physics, Mathematics, Algorithms, Computer Graphics. • Usability evaluation for graphics annotation techniques Design 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 techniques Knowledge 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. Pictures Sounds Videos Other multimedia content Documents eTrace – lessons creation and management 3D Objects "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: Analyze the text above Identify bullets groups "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 red line 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 • Graphical annotation model • User interaction techniques • Automatically knowledge evaluation "eLearning and Software for Education", BUCHAREST, April 17-18, 2008

  19. QuestionsThank 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

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