|  Name
 |  Objects
 |  Background
 |  Annotation
 |  #ex per class
 | 
|   LabelMe
 |  ~500 categories (indoor and outdoor objects)
 |  ~3000 labeled natural images
 |  Bounding polygons
 |  50-500
 | 
|   MIT-CSAIL
 |  107 categories (indoor and outdoor objects)
 |  Natural images
 |  Bounding polygons
 |  ~200
 | 
|   UIUC carSide
 |  Side views of cars
 |  Natural images
 |  Bounding boxes
 |  ~500
 | 
|   ETHZ
 |  Motorbikes, cars, cows
 |  Natural images
 |  Bboxes + seg masks
 |  ~100
 | 
|   Graz 02
 |  Bicycles, cars, cows, pedestirans
 |  Natural images
 |  Segmentation masks
 |  ~300
 | 
|   Caltech
 |  Planes, motorbikes, faces, cars.
 |  Close up photos
 |  Bounding boxes
 |  500-1000
 | 
|   Caltech
101
 |  101 categories
 |  Close up photos
 |  None
 |  ~50-200
 | 
|   Pascal
 |  Cows, bicycles, people, etc. (meta site)
 |  Natural images
 |  Various
 |  Various
 | 
|   Wiry Objects (CMU) 
 |  Chairs, bicycles, etc.
 |  Natural images
 |  Labeled edges
 |  ~100
|   UW
 |  100s
 |  Natural images
 |  Captions
 |  ?
 |  
|   UBC
 |  10s
 |  Corel segmented with Ncuts
 |  Captions
 |  ?
|   MIT-CBCL
 |  Frontal faces, cars, pedestrians
 |  None
 |  Isolated patches
 |  ~800
 |  
|   NORB (NYU)
 |  Toy cars, animals, etc (many angles)
 |  Synthetic cluttered backgrounds
 |  Isolated patches
 |  ~10
 |  
|   CMU/MIT
frontal faces
 |  Frontal faces
 |  None
 |  Isolated patches
 |  ~1000
 |   
|   
Frischholz
 |  Frontal faces (meta site)
 |  None
 |  Isolated patches
 |  ?
 |   |   |