paper: http:https://vis-www.cs.umass.edu/fddb/fddb.pdf
dataset: http:https://vis-www.cs.umass.edu/fddb/index.html#download
extreme scale
paper: https://arxiv.org/pdf/1511.06523.pdf
dataset: http:https://mmlab.ie.cuhk.edu.hk/projects/WIDERFace/index.html
occlusion
dataset: http:https://www.escience.cn/people/geshiming/mafa.html
hight resolution
paper: https://arxiv.org/pdf/1804.06559.pdf
different weather
paper: https://arxiv.org/abs/1804.10275
dataset: https://github.com/hezhangsprinter/UFDD
paper: https://arxiv.org/pdf/1805.07566.pdf
paper: http:https://www.cbsr.ia.ac.cn/faceevaluation/faceevaluation15.pdf
dataset: http:https://www.cbsr.ia.ac.cn/faceevaluation/#reference
paper: https://zhaoj9014.github.io/pub/IJBA_1N_report.pdf
dataset: https://www.nist.gov/itl/iad/image-group/ijb-dataset-request-form
paper: https://ibug.doc.ic.ac.uk/media/uploads/documents/sagonas_iccv_2013_300_w.pdf
occluded to different degrees
paper: https://www.microsoft.com/en-us/research/wp-content/uploads/2013/12/BurgosArtizzuICCV13rcpr.pdf
faces with large head pose up to 120◦ for yaw and 90◦ for pitch and roll.
paper: http:https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.384.2988&rep=rep1&type=pdf
dataset: https://www.tugraz.at/institute/icg/research/team-bischof/lrs/downloads/aflw/
from wider face dataset