FDDB (Face Detection Data Set and Benchmark) Dataset is a facial region dataset, which is mainly used to study the problem of unconstrained face detection. The dataset contains 5171 facial annotations from 2845 images obtained from Faces in the Wild Dataset. The FDDB Dataset was released by the University of Massachusetts Amherst – Department of Computer Science in 2010. The related paper is "FDDB: A Benchmark for Face Detection in Unconstrained Settings".