The CIFAR-100 dataset is a labeled subset of the 80 million tiny images dataset consisting of 100 classes. They were collected by Alex Krizhevsky, Vinod Nair, and Geoffrey Hinton:
Original images (162MB, contains Python pickled objects)
Conversion from original data:
Decompress the images
Run Python script (requirements.txt) from the directory with the .tar.gz file
The train and test directories contain training and test sets with the the class labels as sub-directories
License
Unclear.
Citation
Learning Multiple Layers of Features from Tiny Images, Alex Krizhevsky, 2009.