Table 2.
Some computational components of saliency algorithms. Notably, our SUN algorithm requires only offline probability distribution estimation and no global computation over the test image in calculating saliency.
| Model | Statistics calculated using | Global operations | Statistics calculated on image |
|---|---|---|---|
| Itti et al. (1998) | N/A | Sub-map normalization | None |
| Bruce and Tsotsos (2006) | Current image | Probability estimation | Once for each image |
| Gao and Vasconcelos (2007) | Local region of current image | None | Twice for each pixel |
| SUN | Training set of natural images (pre-computed offline) | None | None |