Table 9.
Strengths and weaknesses of the sensors and techniques for 3D reconstruction.
| Technology | Strength | Weakness |
|---|---|---|
| MBS | Early adopted | High cost |
| Long range and coverage | High minimum distance | |
| Independent of water turbidity | Low resolution | |
| SBS | Early adopted | High cost |
| Long range | Echoes | |
| Independent of water turbidity | Low resolution | |
| SSS | Good data acquisition rate | High cost |
| Independent of water turbidity | Needs constant speed | |
| Long range | Unknown dimension | |
| IS | Medium to large range | High cost |
| Independent of water turbidity | Unknown dimension | |
| LiDAR | Not underwater | Limited to first 15 meters |
| Safety constraint | ||
| LLS | Medium data acquisition rate | High cost |
| Medium range | Safety constraint | |
| Good performance in scattering waters | ||
| SfM | Simple and inexpensive | Computation demanding |
| High accuracy on well-defined targets | Sparse data covering | |
| Close range | Needs textured scenes | |
| Unknown scale | ||
| SV | Simple and inexpensive | Computation demanding |
| High accuracy on well-defined targets | Sparse data covering | |
| Close range | Low data acquisition rate | |
| PhS | Simple and inexpensive | Limited to smooth surfaces |
| Close range | Needs fixed position | |
| VW-SL | High data acquisition rate | Computation demanding |
| Close range | Missing data in occlusions and shadows | |
| Needs fixed position | ||
| CW-SL | High data acquisition rate | Computation demanding |
| Medium range | Missing data in occlusions and shadows | |
| Safety constraint if laser source |