About ImageNet
Summary and Statistics (updated on April 30, 2010)
Overall
- Total number of non-empty synsets: 21841
- Total number of images: 14,197,122
- Number of images with bounding box annotations: 1,034,908
- Number of synsets with SIFT features: 1000
- Number of images with SIFT features: 1.2 million
Statistics of high level categories
| High level category |
# synset (subcategories) |
Avg # images per synset |
Total # images |
| amphibian | 94 | 591 | 56K |
| animal | 3822 | 732 | 2799K |
| appliance | 51 | 1164 | 59K |
| bird | 856 | 949 | 812K |
| covering | 946 | 819 | 774K |
| device | 2385 | 675 | 1610K |
| fabric | 262 | 690 | 181K |
| fish | 566 | 494 | 280K |
| flower | 462 | 735 | 339K |
| food | 1495 | 670 | 1001K |
| fruit | 309 | 607 | 188K |
| fungus | 303 | 453 | 137K |
| furniture | 187 | 1043 | 195K |
| geological formation | 151 | 838 | 127K |
| invertebrate | 728 | 573 | 417K |
| mammal | 1138 | 821 | 934K |
| musical instrument | 157 | 891 | 140K |
| plant | 1666 | 600 | 999K |
| reptile | 268 | 707 | 190K |
| sport | 166 | 1207 | 200K |
| structure | 1239 | 763 | 946K |
| tool | 316 | 551 | 174K |
| tree | 993 | 568 | 564K |
| utensil | 86 | 912 | 78K |
| vegetable | 176 | 764 | 135K |
| vehicle | 481 | 778 | 374K |
| person | 2035 | 468 | 952K |
