2D graphical interaction in elearning
Journal Title: Revista Romana de Interactiune Om-Calculator - Year 2012, Vol 5, Issue 2
Abstract
Sketching is often used by people to express ideas. Some concepts that are hard to explain in words can be easily expressed using a figure or drawing. As the pen-based user interfaces became common, many systems that use this type of interaction were built. The traditional methods used in sketch recognition can be grouped into three categories: aspect-based recognition, gesture-based recognition and geometry-based recognition. Although each of these methods has advantages and disadvantages, the geometry-based methods have proved to be the most suitable for building multi-domain recognizers. As an extension to the existing eLearning systems, we propose the integration of a sketch recognition system that can be used in many educational areas. The recognition system supports the user in the drawing process and offers meaningful and relevant information about the recognized concepts. In order to use questions that require a graphical answer, before the system can correctly and automatically evaluate the student's answer and offer immediate feedback, the teacher must provide a reference solution to the problem, the correct/expected answer. The system uses its knowledge, consisting of primitive forms and constraints) to recognize the graphical primitives and the relations between them and compares the student’s solution with the one given by the teacher.
Authors and Affiliations
Andreea Chiscari, Dorian Gorgan
The modeling, analysis and classification of conversations in collaborative environments
The classification of conversations in collaborative environments is needed for a better understanding of discussed subjects. Ontologies represent an efficient and representative method of conceptualising a domain. Start...
A need, no app: just do it! But do people support dynamic composition of interactive systems for fulfilling emergent needs?
In Human Computer Interaction engineering, both the context of use (<user, platform, environment>) and the user task (<goal, procedure>) are supposed to be set at design time. However, in ubiquitous computing...
Controlul aplicaţiilor ce funcţionează pe sisteme Windows prin intermediul dispozitivelor Android
Articolul de faţă prezintă o aplicaţie client-server, care permite unui utilizator să controleze de la distanţă prin intermediul unei componente Android aplicaţiile ce funcţionează pe un calculator pe care rulează sistem...
Evaluating the usability of three mobile-based applications for diabetes care
In the last years, there is a growing interest in the usability of software applications for medical care. A typical category of patients that need support for the self-management of medication and life style are the dia...
Satellite images visualization techniques based on geospatial services
The analysis of large volumes of data, the extraction of relevant information, and the interactive exposure and visualization of the results represent the basic processes in modeling the natural phenomena, based on satel...