Touch Screen Input Shapes Recognition in PN Designer

ID: 36225 Type: Virtual Brief Paper
  1. Katarína Jelemenská and Cicák Pavel, Faculty of Informatics and Information Technologies, Slovak University of Technology in Bratislava, Slovakia (Slovak Republic)

Abstract: This paper presents an approach to Petri net objects recognition that has been adopted to develop natural user interface based on Tablet PC stylus and touch screen, so that students have the feeling they are drawing on a sheet of paper rather than on a computer. The user interface was used in an educating tool, designed to support Petri nets education, and proved to be efficient and user friendly. The PN Designer, as the tool is called, helps students to master Petri nets and can also be used to examine the student‘s knowledge. For this purpose the server part has been developed mainly devoted to tests distribution and collection. The tests themselves are taken and evaluated on client computers, not directly on the server. Therefore there will not be a situation where all the solved tests would have been lost due to server malfunction.


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