Fine-grained image classification

• Stanford Car Dataset : 16,185 images of 196 classes, annotated by Made, Model, Year
• Caltech-UCSD Bird Dataset : 11788 bird images of 200 species in a 4-level taxonomy hierarchy

Image retrieval

• ImageNet : large image classification dataset with WordNet labels
• Stanford Product Dataset : Ebay product images (120,053 images of 22,634 classes)
• NEXET Challenge : annotated road images in different environment (primarily for vehicle detection)