Data analysis and advanced visualization of 360degrees video dataset
Abstract: Recent trends in the use of 360degrees videos have led to a proliferation of studies that point to its potential in different application domains. A notable example of this potential is shown in the development of tools for educating and evaluating students in multiple disciplines. A search of the literature revealed there is a lack of research in the visualization of users’ navigation patterns and behavior while watching a 360degree interactive video in educational scenarios. There is a need for analyzing this behavior in order to help the teachers to evaluate their learners, and also understand how they are using this educational tool. To address this necessity, the creation of an approach was proposed. To gather for the approach’s technical requirements, meetings with nursing teachers and experts in the visualization field were conducted. This approach turned into the second version of Xcalpel (Xcalpel2.0) which was developed as the solution to this problem. To visualize users’ navigation behavior, an interaction dataset from 16 groups of medical students was used in this application. Two user studies were performed focusing on the interactions of the user with the application, having the user experience as one of the main factors for its evaluation, regarding media technology standards. The first user study was performed with two nursing teachers stressing the pedagogical value that the approach adds to the educational experience, and a second one was performed with four visualization experts in order to evaluate the visualization approaches from a technical point of view. The initial outcome from those sessions showed that Xcalpel2.0 achieves the set requirement and objectives. These results also allow seeing the advantages and drawbacks that the application presents, while knowing which developed visualization approaches are more suitable for solving the detected necessity. The aspect of the comparison between 360degrees video users had been successfully implemented, as well as the analysis and visualization of the navigation patterns in a 360 space, which makes out of Xcalpel2.0 a useful tool for assessing the performance into an interactive 360degrees video in educational scenarios.
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