Proceedings of the 11th annual ACM symposium on User interface software and technology
ToolSpace: Web based 3D collaboration
Proceedings of the fourth symposium on Virtual reality modeling language
Distributed design review in virtual environments
Proceedings of the third international conference on Collaborative virtual environments
Annotating and sketching on 3D web models
Proceedings of the 7th international conference on Intelligent user interfaces
Designing UI techniques for handwritten mathematics
SBIM '07 Proceedings of the 4th Eurographics workshop on Sketch-based interfaces and modeling
Knowledge Assessment for Annotation Techniques on Medical eLearning Objects
CBMS '08 Proceedings of the 2008 21st IEEE International Symposium on Computer-Based Medical Systems
A freehand sketching interface for progressive construction of 3D objects
Computers and Graphics
Construction and modification of 3D geometry using a sketch-based interface
SBM'06 Proceedings of the Third Eurographics conference on Sketch-Based Interfaces and Modeling
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Instead of classical user interfaces based on forms, the graphics annotation proposes another type of user interaction providing support for free expressions, creativity, manual ability, and artistic imagination. Moreover the graphics annotation directly on the surface of 3D eLearning objects requires the development of new graphics algorithms, annotation models, and interaction techniques. This paper reports the experiments developed through the eTrace eLearning Environment concerning with possibility of using the 3D graphics annotation in the context of eLearning lessons. The research addresses a few subjects such as the appropriate model of the 3D graphics annotation that support the automatic evaluation, lesson context based annotation model and processing, interaction techniques for annotation description, drawing and visualization. The work concerns with practical solutions for all the steps through which the teacher defines the annotation related constraints, the system records the annotation specifications within the lesson structure, the user carries out the graphics annotation based answer, the system processes the annotation, quantifies the answer and computes the final mark. This paper highlights mainly the first step of the 3D graphics annotation model description. The research opens new opportunities for graphics annotation based knowledge assessment in eLearning applications against the well known and limited multiple choice questions.