Details on subjective experiments

• Test method: single stimulus with hidden reference. A single dynamic mesh is shown simultaneously to observers. Unprocessed reference stimulus were presented as any other test stimulus.
• Rating scale: absolute numerical categorical rating scale with 11 grades. Grading scale is sampled to 5 quality labels: "bad", "poor", "fair", "good" and "excellent".
• Display settings: TFT-LCD screen resolution 1680x1050. Meshes were rendered with diffusive material, smooth shading, 1 static light source and non-uniform background.
• Camera: stationary (for 6 models) and object-tracking (for 4 models).
• User interactions: zoom, rotation, translation.
• Observers: 25 observer for with-interaction sessions, 16 observers for without-interaction sessions.