Unidentified Video Objects: A Benchmark for Dense, Open-World Segmentation
             Weiyao Wang       Matt Feiszli  Heng Wang              Du Tran
                         Facebook AI Research
                   {weiyaowang,mdf,hengwang,trandu}@fb.com

            Abstract
  Current state-of-the-art object detection and segmenta-
tion methods work well under the closed-world assump-
tion. This closed-world setting assumes that the list of
object categories is available during training and de ...