41 lines
2.2 KiB
TeX
41 lines
2.2 KiB
TeX
\subsubsection{Questionnaire}
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\label{sec:questions}
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\begin{subfigswide}{questions}{%
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Experiment \#1. Boxplots of the questionnaire results of each visual hand rendering
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%
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and pairwise Wilcoxon signed-rank tests with Holm-Bonferroni adjustment: ** is \pinf{0.01} and * is \pinf{0.05}.
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%
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Lower is better for Difficulty and Fatigue. Higher is better for Precision, Efficiency, and Rating.
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}
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\subfig[0.19]{results/Question-Difficulty}
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\subfig[0.19]{results/Question-Fatigue}
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\subfig[0.19]{results/Question-Precision}
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\subfig[0.19]{results/Question-Efficiency}
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\subfig[0.19]{results/Question-Rating}
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\end{subfigswide}
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\figref{questions} presents the questionnaire results for each visual hand rendering.
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%
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Friedman tests indicated that all questions had statistically significant differences (\pinf{0.001}).
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%
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Pairwise Wilcoxon signed-rank tests with Holm-Bonferroni adjustment were then used each question results (see \secref{metrics}):
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\begin{itemize}
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\item \textit{Difficulty}: Occlusion was considered more difficult than Contour (\p{0.02}), Skeleton (\p{0.01}), and Mesh (\p{0.03}).
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\item \textit{Fatigue}: None was found more fatiguing than Mesh (\p{0.04}); And Occlusion more than Skeleton (\p{0.02}) and Mesh (\p{0.02}).
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\item \textit{Precision}: None was considered less precise than Skeleton (\p{0.02}) and Mesh (\p{0.02}); And Occlusion more than Contour (\p{0.02}), Skeleton (\p{0.006}), and Mesh (\p{0.02}).
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\item \textit{Efficiency}: Occlusion was found less efficient than Contour (\p{0.01}), Skeleton (\p{0.02}), and Mesh (\p{0.02}).
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\item \textit{{Rating}}: Occlusion was rated lower than Contour (\p{0.02}) and Skeleton (\p{0.03}).
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\end{itemize}
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In summary, Occlusion was worse than Skeleton for all questions, and worse than Contour and Mesh on 5 over 6 questions.
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%
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Results of Difficulty, Performance, and Precision questions are consistent in that way.
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%
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Moreover, having no visible visual hand rendering was felt by users fatiguing and less precise than having one.
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Surprisingly, no clear consensus was found on Rating.
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%
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Each visual hand rendering, except for Occlusion, had simultaneously received the minimum and maximum possible notes.
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