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Detect known and unknown objects with semi-supervised learning by auto-encoder ensemble with OWSSD

Detect known and unknown objects with semi-supervised learning by auto-encoder ensemble with OWSSD


Semi-Supervised Object Detection in the Open World

arXiv paper abstract https://arxiv.org/abs/2307.15710



Existing approaches for semi-supervised object detection assume a fixed set of classes present in training and unlabeled datasets, i.e., in-distribution (ID) data.


... these techniques significantly degrades when these techniques are deployed in the open-world, due to the fact that the unlabeled and test data may contain objects that were not seen during training, i.e., out-of-distribution (OOD) data.


... propose the Open World Semi-supervised Detection framework (OWSSD) that effectively detects OOD data along with a semi-supervised learning pipeline that learns from both ID and OOD data.


... introduce an ensemble based OOD detector consisting of lightweight auto-encoder networks trained only on ID data.


... demonstrate that ... method performs competitively against state-of-the-art OOD detection algorithms and also significantly boosts the semi-supervised learning performance in open-world scenarios.



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