Hybrid Design Tools - Image Quality Assessment of a Digitally Augmented Blackboard Integrated System
This work offers an incremental improvement for educators in disciplines requiring interactive drawing tools, by enhancing a hybrid alternative to Interactive White Boards.
The study addressed the problem of poor image quality in a digitally augmented blackboard system used for teaching complex drawings, finding that the system provides good quality support based on objective and subjective evaluations.
In the last two decades, Interactive White Boards (IWBs) have been widely available as a pedagogic tool. The usability of these boards for teaching disciplines where complex drawings are needed, we consider debatable in multiple regards. In a previous study, we proposed an alternative to the IWBs as a blackboard augmented with a minimum of necessary digital elements. The current study continues our previous research on hybrid design tools, analyzing the limitations of the developed hybrid system regarding the perceived quality of the images being repeatedly captured, annotated, and reprojected onto the board. We validated the hybrid system by evaluating the quality of the projected and reprojected images over a blackboard, using both objective measurements and subjective human perception in extensive and realistic case studies. Based on the results achieved in the current research, we conclude that the proposed hybrid system provides good quality support for teaching disciplines that require complex drawings and board interaction.