Few-shot Open-set Recognition Using Background as Unknowns

Abstract

Bkg feat Bkg feat a) Close-set classification b) Few-shot open-set classificationFigure 1: a) Close-set classification. Standard classification classifies all inputs to a set of pre-defined training classes. b) Fewshot open-set classification task aims to classify images from seen and unseen classes given only limited training samples of seen classes. We propose to utilize the background regions at the training phase as the pseudo unseen classes to train the classifier that can directly classify seen and unseen images.