| vision: | |
| 1. Streamline Density: Are the streamline tubes densely distributed throughout the volume, similar to the ground truth? | |
| 2. Color Mapping: Are the tubes colored by vorticity magnitude using a blue-white-red diverging colormap, with a similar color distribution as the ground truth? | |
| 3. Tube Appearance: Do the streamline tubes have a similar thickness and smooth appearance as the ground truth? | |