Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!
MNIST
https://en.wikipedia.org/wiki/List_of_datasets_for_machine-learning_research
https://www.nist.gov/
ImageNet
Raccoon Dataset for Training Raccoon Detection
COCO - Common Object in Context
VOC-2012
ImageNet Large Scale Visual Recognition Challenge (ILSVRC)
The KITTI Vision Benchmark Suite
Penn-Fudan Database for Pedestrian Detection and Segmentation